助动词
复习讲义助动词
一.概念:
助动词是帮助主要动词构成各种时态,语态,语气以及否定或疑问结构的动词.助动词分为时态助动词和结构助动词两种.
二.相关知识点精讲:
1. 助动词be的用法
1） be +现在分词，构成进行时态。
They are having a meeting. 他们正在开会。
English is becoming more and more important. 英语现在越来越重要。
2）be + 过去分词，构成被动语态。
The window was broken by Tom.. 窗户是汤姆打碎的。
English is taught throughout the world. 世界各地都教英语。
3） be + 动词不定式，可表示下列内容：
a. 表示最近、未来的计划或安排。
He is to go to New York next week.. 他下周要去纽约。
We are to teach the freshmen. 我们要教新生。
说明：这种用法也可以说成是一种将来时态表达法。
b. 表示命令。
You are to explain this. 对此你要做出解释。
He is to come to the office this afternoon. 要他今天下午来办公室。
c. 征求意见。
How am I to answer him? 我该怎样答复他？
Who is to go there? 谁该去那儿呢？
d. 表示相约、商定。
We are to meet at the school gate at seven tomorrow morning. 我们明天早晨7点在校门口集合。
2. 助动词have的用法
1）have +过去分词，构成完成时态。
He has left for London. 他已去了伦敦。
By the end of last month, they had finished half of their work. 上月未为止，他们已经完成工作的一半。
2）have + been +现在分词，构成完成进行时。
I have been studying English for ten years. 我一直在学英语，已达十年之久。 3）have +been +过去分词，构成完成式被动语态。例如：
English has been taught in China for many years. 中国教英语已经多年。
3.助动词do 的用法
1）构成一般疑问句。
Do you want to pass the CET? 你想通过大学英语测试吗？
Did you study German? 你们学过德语吗？
2）do + not 构成否定句。
I do not want to be criticized. 我不想挨批评。
He doesn't like to study. 他不想学习。
In the past, many students did not know the importance of English.
过去，好多学生不知道英语的重要性。
3）构成否定祈使句。
Don't go there. 不要去那里。
Don't be so absent-minded. 不要这么心不在焉。
说明：构成否定祈使句只用do，不用did和does。
4）放在动词原形前，加强该动词的语气。
Do come to my birthday party. 一定来参加我的生日宴会。
I did go there. 我确实去那儿了。
I do miss you. 我确实想你。
5）用于倒装句。例如：
Never did I hear of such a thing. 我从未听说过这样的事情。
Only when we begin our college life do we realize the importance of English. 进了大学以后，我们才认识到英语的重要性。
说明：引导此类倒装句的副词有never, seldom, rarely, little, only, so, well 等。
6）用作代动词。
---- Do you like Beijing? --你喜欢北京吗？
---- Yes, I do. --是的，喜欢。（do用作代动词，代替like Beijing.）
He knows how to drive a car, doesn't he? 他知道如何开车，对吧？
4. 助动词shall和will的用法
shall和will作为助动词可以与动词原形一起构成一般将来时。例如：
I shall study harder at English. 我将更加努力地学习英语。
He will go to Shanghai. 他要去上海。
说明：在过去的语法中，语法学家说shall用于第一人称，will 只用于第二、第三人称。现在，尤其是在口语中，will常用于第一人称，但shall只用于第一人称，如用于第二、第三人称，就失去助动词的意义，已变为情态动词，试比较:
He shall come. 他必须来。（shall有命令的意味。）
He will come. 他要来。（will只与动词原形构成一般将来时。）
5.助动词should, would的用法
1）should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称。
I telephoned him yesterday to ask what I should do next week. 我昨天给他打电话，问他我下周干什么。
比较："What shall I do next week?" I asked. "我下周干什么？"我问道。
可以说，shall变成间接引语时，变成了should。
2） would也无词义，是will的过去形式，与动词原形构成过去将来时，用于第二、第三人称。
He said he would come. 他说他要来。
比较："I will go," he said. 他说："我要去那儿。"变成间接引语，就成了He said he would come。原来的will变成would，go变成了come.。
三.巩固练习
1.If it is fine tomorrow, we ______ a football match.
a. have
b. will have
c. has
d. shall has
2.When he was at school, he ______ early and take a walk before breakfast.
a. will rise
b. shall rise b. should rise would rise
3.In the past 30 years China ______ great advances in the socialist revolution and socialist construction.
a. has made
b. have made
c. had made
d. having made
4.I ______ go to bed until I ______ finished my work.
a. don’t/had
b.didn’t/have
c. didn’t/had
d. don’t/have
5.______ you think he ______ back by dinner time?
a. Do/have come
b. Did/will have come
c. Does/will come
d. Do/will have come
6.He said that he dropped his bag when he ______ for the bus.
a. was running
b. was running
c. were running
d. is running
7.No sooner ______ he arrived home than he ______ to start on another journey.
a. has/was asked
b. have/were asked
c. had/is asked
d. had/was asked
8.“______ you give me a room for the night?” I a sked on arriving at the hotel.
a. Should
b. Can
c. Might
d. May
9.There are nine of them, so ______ get into the car at the same time.
a. they may not at all
b. all they may not
c. they can’t all
d. all they can’t
10.“We didn’t see him at the lecture yesterday.” “He ______ it.”
a. mustn’t attend
b. cannot have attended
c. would have not attended
d. needn’t have attended
11.“You realize that you were driving at 100 mph, don’t you?”
“No, officer. I ______. This car can’t do more than 80.”
a. didn’t need to be
b. may not have been
c. couldn’t have been
d. needn’t have been
12.he was a good runner so he ______ escape from the police.
a. might
b. succeeded to
c. would
d. was able to
13.If they ______, our plan will fall flat.
a. are co-operating
b. had not co-operated
c. won’t co-operate
d. didn’t co-operate
14.I hoped ______ my letter.
a. her to answer
b. that she would answer
c. that she answers
d. her answering
15.He ______ live in the country than in the city.
a. prefers
b. likes to
c. had better
d. would rather
16.______ to see a film with us today?
a. Did you like
b. Would you like
c. Will you like
d. Have you liked
17.I’m sorry, but I had no alternative. I simply ______ what I did.
a. must do
b. had to do
c. ought to have done
d. have to do
18.“Time is running out,______?”
a. hadn’t we better got start
b. hadn’t we better get start
c.hadn’t we better get started
d. hadn’t we better not started
19.No one ______ that to his face.
a. dares say
b. dares saying
c. dare say
d. dare to say
20.The students in the classroom ______ not to make so much noise.
a. need
b. ought
c. must
d. dare
21.You ______ last week if you were really serious about your work.
a. ought to come
b. ought to be coming
c. ought have come
d. ought to have come
22.The elephants ought ______ hours ago by the keepers.
a. to be fed
b. to feed
c. to being fed
d. to have been fed
23.“I wonder why they’re late.” “They ______ the train.”
a. can have missed
b. could miss
c. may have missed
d. might miss
24.“Tom graduated from college at a very young age.”
“He ______ have been an outstanding student.”
a. must
b. could
c. should
d. might
25.You ______ the examination again since you had already passed it.
a. needn’t have taken
b. didn’t need to take
c. needn’t take
d. mustn’t take
26.He is really incompetent! The letter ______ yesterday.
a. should be finished typing
b. must be finished typing
c.must have finished typing c. should have been finished typing
27.The boy told his father that he would rather ______ an astronaut.
a. become
b. to become
c. becoming
d. became
28.When we reached the station, the train had still not arrived; so we ______.
a. needed not to hurry
b. needn’t have hurried
c. need not to have hurried
d. didn’t need to hurry
29.Since your roommate is visiting her family this weekend,_____ you like to have dinner with us tonight?
a. will
b. won’t
c. wouldn’t
d. do
30.He was afraid what he had done ______ a disastrous effect on his career.
a. might have
b. could be
c. have been
d. shall be
四.答案
1-10 BDACDBDBCB 11-20 CDCBDBBCCB 21-30 DDCABDABCA
高考英语语法强化训练：助动词
1.If it is fine tomorrow, we ______ a football match.
a. have
b. will have
c. has
d. shall has
2.When he was at school, he ______ early and take a walk before breakfast.
a. will rise
b. shall rise b. should rise would rise
3.In the past 30 years China ______ great advances in the socialist revolution and socialist construction.
a. has made
b. have made
c. had made
d. having made
4.I ______ go to bed until I ______ finished my work.
a. don’t/had
b. didn’t/have
c. didn’t/had
d. don’t/have
5.______ you think he ______ back by dinner time?
a. Do/have come
b. Did/will have come
c. Does/will come
d. Do/will have come
6.He said that he dropped his bag when he ______ for the bus.
a. was runing
b. was running
c. were running
d. is running
7.No sooner ______ he arrived home than he ______ to start on another journey.
a. has/was asked
b. have/were asked
c. had/is asked
d. had/was asked
8.“______ you give me a room for the night?” I asked on arriving at the hotel.
a. Should
b. Can
c. Might
d. May
9.There are nine of them, so ______ get into the car at the same time.
a. they may not at all
b. all they may not
c. they can’t all
d. all they can’t
10.“We didn’t see him at the lecture yesterday.” “He ______ it.”
a. mustn’t attend
b. cannot have attended
c. would have not attended
d. needn’t have attended
11.“You realize that you were driving at 100 mph, don’t you?”
“No, officer. I ______. This car can’t do more than 80.”
a. didn’t need to be
b. may not have been
c. couldn’t have been
d. needn’t have been
12.he was a good runner so he ______ escape from the police.
a. might
b. succeeded to
c. would
d. was able to
13.If they ______, our plan will fall flat.
a..are co-operating
b. had not co-operated
c. won’t co-operate
d. didn’t co-operate
14.I hoped ______ my letter.
a. her to answer
b. that she would answer
c. that she answers
d. her answering
15.He ______ live in the country than in the city.
a. prefers
b. likes to
c. had better
d. would rather
16.______ to see a film with us today? a. Did you like b. Would you like c. Will you like
d. Have you liked
17.I’m sorry, but I had no alternative. I simply ______ what I did.
a. must do
b. had to do
c. ought to have done
d. have to do
18.“Time is running out,______?”
a. hadn’t we better got start
b. hadn’t we better get start
b. hadn’t we better get started d. hadn’t we better not started
19.No one ______ that to his face.
a. dares say
b. dares saying
c. dare say
d. dare to say
20.The students in the classroom ______ not to make so much noise.
a. need
b. ought
c. must
d. dare
21.You ______ last week if you were really serious about your work.
a. ought to come
b. ought to be coming
c. ought have come
d. ought to have come
22.The elephants ought ______ hours ago by the keepers.
a. to be fed
b. to feed
c. to being fed
d. to have been fed
23.“I wonder why they’re late.” “They ______ the train.”
a. can have missed
b. could miss
c. may have missed
d. might miss
24.“Tom graduated from college at a very young age.” “He ______ have been an outstanding student.”
a. must
b. could
c. should
d. might
25.You ______ the examination again since you had already passed it.
a. needn’t have taken
b. didn’t need to take
c. needn’t take
d. mustn’t take
26.He is really incompetent! The letter ______ yesterday.
a. should be finished typing
b. must be finished typing
c. must have finished typing
d. should have been finished typing
27.The boy told his father that he would rather ______ an astronaut.
a. become
b. to become
c. becoming
d. became
28.When we reached the station, the train had still not arrived; so we ______.
a. needed not to hurry
b. needn’t have hurried
c.need not to have hurried
d. didn’t need to hurry
29.Since your roommate is visiting her family this weekend,_____ you like to have dinner with us tonight?
a. will
b. won’t
c. wouldn’t
d. do
30.He was afraid what he had done ______ a disastrous effect on his career.
a. might have
b. could be
c. have been
d. shall be
31.He ______ hardly say anything more, since you know about it.
a. don’t need to
b. needn’t
c. needs
d. need
32.You ______ the look on his face when he won the prize.
a. would have seen
b. should have seen
c. must see
d. can be seeing
33.Some people think the stock market will crash, but ______.
a. I wonder if it happens
b. I doubt if it will happen
c. I am afraid it would n’t happen
d. I doubt if it does happen
34.“Whatever has happened to George?” “I don’t know. He ______ lost.”
a. can have got
b. may have got
c. might get
d. could get
35.He has no idea what the book is about. He ______read the book.
a. couldn’t
b. couldn’t have
c. mightn’t have
d. shouldn’t have
36.New studies show that two of Saturn’s rings _ longer than the 4.5 billion years since the birth of the Solar System.
a. could have lasted
b. should have lasted
c. would have lasted
d. must be lasting
37.Take the telescope with you in case you ______ it in your expedition.
a. will need
b. would need
c. should need
d. could need
38.---Need he come at once?--- Yes, he ______. a. must b. must not c. need d. may
39.Please answer the phone. It ______ be by your father. If it is, would you tell that I want to see him?
a. will
b. should
c. would
d. could
40.We’ll never give in whatever they ______ say or do. a. may b. will c. shall d. should
41.With all this work on hand, he ______ to the cinema last night.
a. mustn’t go
b. wouldn’t go
c. oughtn’t go
d. shouldn’t have gone
42.Everyone ______ the cake because there wasn’t even a small piece left.
a. must like
b. must have liked
c. must have been liking
d. had liked
43.I wish to recollect where I met her, ______?
a. would I
b. may I
c. may not I
d. can I
44.I ______ think he will ______ dare the risk. a. not/ .. b. do/not c. ../not d. don’t/..
45.If reading is to accomplish anything more than passing time, it ______ be active.
a. may not
b. must
c. might
d. is not
46.You ______ your seats today if you want to go to the game.
a. had better to reserve
b. had better reserve
c. had to better reserve
d. had to reserve better
47.I ______ the operation unless it is absolutely necessary.
a. would rather not have
b. would not rather had
c. rather would not have
d. rather not would have
48.Many scientists ______ their own eyes and ears than the theories of the ancients.
a. would rather to believe
b. would rather believe
c. rather would believe
d. will rather believe
49.To travel from England to Scotland you ______ a passport.
a. haven’t got
b. mustn’t have
c. needn’t
d. don’t need
50.One of the statements ______ to be untrue.
a. is turned out
b. has turned out
c. have been turned out
d. have turned out
51.I don’t know whether it will rain or not, but if it ______ rain, I shall stay at home.
a. will
b. did
c. does
d. shall
52.“You’d like some tea,______?”
a. wouldn’t you
b. shouldn’t you
c. hadn’t you
d. didn’t you
53.“May we take the books out?”
a. No, you may not
b. No, you can not
c. No, you can’t
d. Please don’t
54.“I would have come sooner, but I ______ that you were waiting.”
a. didn’t know
b. hasn’t known
c. hadn’t know
d. haven’t known
55.If you don’t want to, you ______ to get th ere with us.
a. mustn’t
b. can’t
c. don’t have
d. have not
56.I would go to visit them but I ______ think they are anxious to see me.
a. haven’t
b. don’t
c. doesn’t
d. didn’t
57.Whatever you can do,______.
a. I can do so as well
b. I can do this as well
c. I can do it as well
d. I can do as well
58._____- I realized the consequences I would never have contemplated getting involved.
a. Had
b. Have
c. Having
d. Has
59.“Perhaps she is working for John.” “Yes, she ______ for him.”
a. need have been working
b. may be working
c. ought have been working
d. ought be working
60.“I know she was in because I heard her radio, but she didn’t open the door.” “She ______ the bell.”
a. may not be hearing
b. may not have heard c .must not have heard d. must not be
hearing
61. “He was smoking.” “Then he ______ .”
a.ought to have been not smoking
b. ought to have not been smoking
c.ought not to have been smoking
d. ought to not have been smoking
62.You ______ out yesterday without a coat. No wonder you caught cold.
a. oughtn’t have gone
b. shouldn’t have gone
c. mustn’t have gone
d. can’t have gone
63.“Paul was riding a bicycle along the motorway when he was hit by the trailer of a lorry.” “He _____ a bicycle along the motorway; bicycles are not allowed.”
a. shouldn’t have been riding
b. couldn’t have been riding
c.oughtn’t have been riding
d. can’t have been riding
64.I am listening. But you ______.
a. need be listening
b. should be listening
c. need have been listening
d. ought be listening
65.He ______ with us last night.
a.would have liked to go
b. should like to be going
c.should be liked to go
d. would like to go
66.I ______ his face when he opened the letter.
a. should like you to see
b. would have liked you to be seen
c .shoul
d lik
e you to have seen d. would like you to see
67.You say you ______ do it, but I say you ______ do it.
a. ought not/could
b. will not/shall
c. could not/need
d. shall not/ought
68.We ______ put the meeting off for a week.
a. can as well
b. will as well
c. shall as well
d. may as well
69.______ wind your watch every day?
a. Do you need
b. Must you have to
c. Have you to
d. Do you have to
70.______ give him a chance to try?
a. Oughtn’t to we
b. Oughtn’t we to
c. Ought to we not
d. Oughtn’t we
71.“Did you blame him for his mistakes?” “______”
a. I’d rather not do
b. I’d not rather do
c. I’d better not do
d. I’d rather not doing
72.You had better ______ your hair cut.
a. had
b. have
c. to get
d. to have
73.My sister didn’t go to the party la st night because she ______ the baby for her friend until 9:30.
a.must have looked after
b. would have to look after b.had to look after d. should have looked after
74.Mary is very late, she ______.
a.may miss her train
b. may have missed her train
c.must miss her train
d. could miss her train
75.No matter what you may say, he ______ to his own views.
a.would always stick
b. will always stick
c. should always stick
d. must always stick to
76.It’s wonderful that you ______ have achieved so much in th ese years.
a. may
b. can
c. should
d. would
77.The students asked whether he ______ take the books out of the reading-room.
a. could
b. might
c. should
d. would
78.He ______ still be thinking about the question you raised. a. may b. might c. must d. should
79.I’d be glad if you______ give me an account of the fact. a.shall b. should c. would d. may
80.He ______ accomplish the task in time. a. did b. has c. is d. do
答案
BDACD BDBCB CDCBD BBCCB DDCAB DABCA DBBBB ACADA
DBBDB BABDB CADAC BDABB CBABA CBDDB AB CBB CABCA
完整word版Be动词助动词练习题
小学英语Be动词、助动词、人称代词主宾格练习 一、选择括号里的词的恰当形式填空。 1、There _________(be)some water in the glass. 2、_______(be)Tom ___________(read) a book now? 3、Please pass_____(we) the ball. 4、When _________ (do) your father usually _________ (go) to work? 5、How old __________ (be)you last year? 6、Which dog ________ (be) yours? /Ten and two ________ (be) twelve. 7、Where ________(be) your friends yesterday? 8、I will give the presents to________(they). 9、Lily is taller than (I)./ Put the desk between (he) and (I). 二、选择填空： 1、My brother ____ a teacher. He ____ his pupils very much. A. is, like B. is, likes C. are, likes D. are, like 2、_____ you go to school by bus? A. Are B. Is C. Do D. Does 3、When _____ your birthday? D. does C. do B. is A. are 4、Which ____ bigger, the sun or the moon? A. are B. is C. be D. / 5、What ______ they _____ on Saturdays?
(完整版)助动词用法及练习
be动词，情态动词，助动词do/does的用法区别及练习 助动词，顾名思义就是帮助动词完成疑问及否定的，本身没有什么含义。主要的助动词有be,do,will,have等，其用法详述如下： 一、⑴由连系动词am，is，are构成的句子：变一般疑问句时把am，is，are提到句子的前面，句尾用问号即可。变否定句时直接在am，is，are后面加not即可。例如： 肯定句:He is a student. 一般疑问句: Is he a student? 否定句: He is not a student. 画线提问: 对he提问: Who is a student? 对a student 提问: What is he? (2)was 是am,is的过去式，were是are的过去式，若句子中有以上两词时，变疑问句及否定句方法与（1）相同。 二、(1) 由情态动词can, may,will ，shall等构成的句子: 变一般疑问句时把can, may,will ，shall提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句: Can she swim? 否定句: She can not swim. 画线提问: 对she提问: Who can swim? 对swim提问: What can she do? （2）could,might,would,should是can,may,will,shall的过去式，若句子中有以上两词时，变疑问句及否定句方法与（1）相同。 三、（1）由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 变否定句时把don’t/doesn’t放在动词的前面。要注意观察动词的形式并对号入座。一般疑问句和否定句的动词三单式都要变回原型。 play-----do plays-----does 例如: 肯定句: They play football after school. He plays football after school. 一般疑问句: Do they play football after school? Does he play football after school? 否定句: They don't (do not) play football after school. He doesn’t’ play football after school. 画线提问: 对they/he提问: Who plays football after school? 对play football提问: What do they do after school? What does he do after school? 对after school提问: When do they play football? When does he play football? （2）did是do和did的过去式，变一般疑问句时把did放在句子前面. 变否定句时把didn’t 放在动词的前面, 要注意观察动词的形式并对号入座。一般疑问句和否定句的动词都要变回原型。
be动词、助动词、情态动词讲解(基础篇)第一讲
be 动词、助动词、情态动词讲解（基础篇） 1、 用单数，反之用复数。 ◆ 句中含有be动词时： 肯定句：主语＋be ＋其他 否定句：主语＋be ＋not ＋其他 一般疑问句：Be ＋主语＋其他＋？ 特殊疑问句：疑问词(what / who / when / where)＋be ＋主语＋其 他＋？ I am a teacher. You are right. She is 16 years old. My father is at home. The students are playing games. My teacher was ill yesterday. There is a picture on the wall. There are two books on the table. ★ be 动词用法歌： 我用am，你用are，is 连接他她它。单数名词用is，复数名词全用are。 变疑问，往前提，句末问号莫丢弃；变否定，更容易，be 后not 莫忘记； 疑问否定任你变，句首大写莫迟疑。 ★ be 动词作谓语，它后面一般跟名词、形容词或介词短语。她个子很高。 她在教室里。她是一个高个子的女孩。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”，即，我们常说的“主语+ 谓语+ 其他” 。 ①主语为I 或复数名词、代词时：肯定句：I / We / They / The students
＋动词原形＋其他＋。 We watch TV every night. 变否定：主语＋don't ＋动词原形＋其他＋。 We don't watch TV every night. 一般疑问句Do + 主语+ 动词原形+ 其他+ ？ Do you watch TV every night? Yes, we do. / No, we don 't. 特殊疑问句：疑问词+ do + 主语+ 动词原形+ 其他+ ？ How often do you watch TV? ②主语为单数名词或代词时：肯定句：主语+ 动词第三人称单数形式 + 其他+ 。 He watches TV every night. 否定句：主语+ doesn't+动词原形+其他+。 He doesn't watch TV every night. 一般疑问句：Does + 主语+ 动词原形+ 其他+ ？ Does he watch TV every night? Yes, he does. / No, he doesn 't. 特殊疑问句：疑问词+ does + 主语+ 动词原形+ 其他+ ？ How often does he watch TV? ★主语为单数或不可数名词，谓语要用单数第三人称，反过来，看见动词用了单数第三人称，可以推知主语是单数或不可数名词。 ( )1. How __ ______ your dad help at home? A. do B. does C. is ( )2. ______ goes bad easily in summer. A. Milk B Apples C. Cakes ③过去时的句式（当句子时态为过去时时，动词用过去式，不受主语单复数的影响） 肯定句：主语+ 过去式+ 其他+ 。 He / We got up early every morning last year. 否定句：主语+ didn't + 动词原形+ 其他+ 。 He / We didn't get up early every morning last year. 一般疑问句：Did + 主语+ 动词原形+ 其他+ ？ Did he / you get up early every morning last year? Yes, he
助动词的用法
助动词在英语学习当中作了解，不需要重点把握，但是助动词也是很好理解的，希望回答能够帮到你。 1.助动词：Be 助动词不能作述语动词,要与本动词一起构成动词片语,表示时态、语态等。 1. BE作为本动词表示状态或客观存在等意思。 Your house is bigger and nicer than mine. 你的房子比我的又大又好。 2. BE+不定词连用,表示约定、义务、命令等未来的动作或状态。 I am to go abroad on business tomorrow. 明天我要去外国出公差。 表示未来的安排。 The meeting is to be held as scheduled. 会议将按原计划召开。 表示计划好的安排。 You are not to bark at my friend. 你不许对我的朋友叫。 表示命令或要求。 3. BE+现在分词构成各种进行时态。 Who are you talking to? 你在和谁说话？ I am talking to my dog. 我在和我的狗说话。 4. BE+过去分词构成被动语态。 That means I will be promoted as scheduled. 这就意味着我将要按原计划得到提升。 2. dare和used to 作为情态助动词的dare一般只能用于疑问句或否定句中,dare+原形动词表示敢。
I dare not say it is ugly. 我不敢说它丑。 How dare you say so? 你怎么敢这么说？ dare也可以作本动词,用于肯定句,后面要接带to的不定词;主词若是第三人称单数,简单现在式时,dare要变为dares。 You, you dare to talk to me like this! 你、你竟敢这样和我讲话！ used to+原形动词表示过去的习惯或状态,而现在已经不存在了。 You're not what you used to be. 你不是以前的你了。 used to构成疑问句时有两种形式。即used + 主词+ to + 其他成份？；Did + 主词+ use to+ 其他成份。 How used I to be? 我以前什么样？ How did you use to be? 你以前什么样？ used to构成否定句时有两种形式，即used not to和didn't use to。 You didn't use to say things like this. You used not to say things like this. 你以前不会说这样的话的。 be used to表示习惯于,其中used是形容词,to是介系词,后接名词、代名词或动名词等,可用于不同的时态。 You're used to hearing words of praise. 你是听好话听惯了。 3. 助动词：Do 1. DO作为助动词时的时态、人称和数的变化与它作为本动词相同,有do, does, did三种形式。 Yes, it seems he doesn't really want to have a haircut.
be动词与助动词的用法
be动词与助动词的用法 1.陈述句:be动词第一人称用am,第二人称用are,第三人称单数用is复数用are. 助动词do一般省略,直接用动词,注意动词时态和人称变化.有时在动词前加do,表示强调,加强语气.如:Do be quiet! 2.疑问句:be动词直接提前,其他部分不变(由陈述句转变).助动词do同样,由省略直接提前放置,后面动词不变,注意do的时态和人称变化. 3.否定句:be动词和助动词do后面加not. be作助动词用的形式如下： ①am, is, are, was, were ②助动词+be：shall be, will be, can be, etc. ③have/has/had + been（完成时） ④am, is, …being（进行时） （1）表达进行时态 句型be + V-ing…（进行时态） 例：What are you reading? （你正在阅读什么？） I am reading a magazine. （我正在阅读杂志。） 例：He will be taking a walk in the park at this time tomorrow morning. （明天早晨此时他将会正在公园散步。） 例：She has been teaching English in our school for years. （她已在我们学校教英语许多年了。） 解说第一例句是表达现在进行时，第二例句是将来进行时，第三例句是现在完成进行时。（2）表达被动语态 句型be +p.p. …（被动语态） 例：English is spoken in both Canada and the United States. （加拿大和美国都讲英语。）
助动词与情态动词-讲解及练习测试题
助动词与情态动词 一、助动词 助动词有be, have, do, will, shall。它们本身没有词义，只和实义动词的一定形式构成复合谓语，用来表示时态和语态，构成否定、疑问及加强语气等。 1、be (am, is, are, were, been) （l）“be + -ing”构成进行时态； （2）“be + 过去分词”构成被动语态； （3）“be + 动词不定式”构成复合谓语： ①表按计划安排要发生的事。The prime minister is to visit Japan next year.总理将于明年访问日本。 ? “do + 动 只有 (1)表示能力，如：He can speak English better than you. (2)在疑问句和否定句中表示“怀疑”、“猜测”或“可能性”，如：Can this green bike be Liu Dong's? (3)表示“许可”时can可以和may换用，如：You can (may) go home now. (4)如果要表示语气婉转，可用could代替can，这时could不再是can的过去式，如：Could you come again tomorrow? (5)can和be able to都可表示能力，两者在意思上没有什么区别。但是can只能有现在式和过去式，而be able to 则有更多的形式，如：He will be able to do the work better. 2、may和might (might为may的过去式)的基本用法 （1）表示允许或征询对方许可，有“可以”之意， 如：You may use my dictionary. 在回答对方说“可以做某事”或“不可以做某事”时，一般多不用may或may not，以避免语气生硬或不容气。而用比较婉转的说法进行回答。如：---- May I use this dictionary? ---- Yes, please. 或---- Certainly. 在请求对方许可时，如果Might I…? 就比用May I…? 语气更婉转些，如：May I have a look at your new
助动词的用法大全
助动词的用法大全 助动词的形式与作用 1)英语常用的助动词(auxiliary verb)有shall，will，should，would，be，have，do等。助动词一般无词义，不能单独作谓语动词。助动词在句中的作用，在于帮助构成各种时态、语态、语气、否定和疑问结构等。如：China has entered a great new era. 中国已进入了一个伟大的新时期。(帮助构成完成时态) Some boys are playing on the grass. 一些男孩正在草地上玩。 (帮助构成进行时态) Mother is written by Gorky. 《母亲》是高尔基写的。 (帮助构成被动语态) We Shall have the football match if it does not rain.如果不下雨，我们就赛足球。(帮助构成将来时态和否定结构) Do you see my point? 你明白我的意思吗?(帮助构成疑问结构) [注]在否定结构中，not须放在助动词后面。 2)助动词加not一般都有简略式，用于口语中。如： is not-isn't would not--wouldn't are not--aren't [B:nt] have not--haven't was not -- wasn't has not--hasn't were not-- weren't [wE:nt] had not--hadn't shall not--shan't [FB:nt] do not--don't [dEunt] will not--won't [wEunt] does not--doesn't
助动词
助动词 协助主要动词构成谓语的词叫助动词（Auxiliary Verb），也叫辅助动词。被协助的动词称作主要动词（Main Verb）。助动词用来构成时态和语态。助动词具有语法意义，但没有词汇意义，不可单独作谓语。它没有对应的汉译，例如： He doesn't like English. 他不喜欢英语。（does是助动词，无词义；like是主要动词，有词义) 外文名 Auxiliary Verb 语言 英语 主要变化形式 如have，has，had 简称 aux.v 谓语 [predicate，简称pred.] 谓语由简单动词或动词短语(助动词或情态动词+主要动词）构成，依据其在句中繁简程度可把谓语分为简单谓语和复合谓语两类。不论何种时态，语态，语气，凡由一个动词构成的谓语都是简单谓语。 定义 最常用的助动词有：be， have， has， do， does， shall， did， will， should，would等。 助动词可以协助主要动词构成时态或者语态，也可构成疑问句和否定句，构成否定句时与否定副词not连用。 分类 半助动词 在功能上介于主动词和助动词之间的一类结构，称为半助动词。 常见的半助动词有： be about to， be due to， be going to， be likely to， be meant to，be obliged to， be supposed to， be willing to， have to， seem to，be unable to， be unwilling to等。...... 情态助动词 1.情态助动词包括will(would)， shall(should)， can(could)， may(might)，must， need， dare， ought to， used to， had better，后接动词原形（原形不定词）。
be动词、助动词、情态动词讲解(基础篇)第一讲
be动词、助动词、情态动词讲解 (基础篇) 1、be动词的用法。 英语中，be动词选用单数还是复数，要由主语来定，主语是单数，就用单数，反之用复数。 ◆ 句中含有be动词时： 肯定句：主语＋be ＋其他 否定句：主语＋ be ＋ not ＋其他 一般疑问句： Be ＋主语＋其他＋？ 特殊疑问句：疑问词（what / who / when / where）＋ be ＋主语＋其他＋？ I am a teacher. You are right. She is 16 years old. My father is at home. The students are playing games. My teacher was ill yesterday. There is a picture on the wall.
There are two books on the table. ★ be动词用法歌： 我用am，你用are，is 连接他她它。单数名词用is，复数名词全用are。 变疑问，往前提，句末问号莫丢弃；变否定，更容易，be后not莫忘记； 疑问否定任你变，句首大写莫迟疑。 ★ be动词作谓语，它后面一般跟名词、形容词或介词短语。 她个子很高。她在教室里。 她是一个高个子的女孩。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”，即，我们常说的“主语 + 谓语 + 其他”。 ① 主语为I 或复数名词、代词时： 肯定句： I / We / They / The students ＋动词原形＋其他 ＋。 We watch TV every night. 变否定：主语＋don’t ＋动词原形＋其他＋。
日语助词用法小结(超全)
日语助词用法小结（超全） 1.1.1.提示助词［用在判断句中，［总］提示主语 1.1. 2.提示助词［哲］［t ］表示兼提，有"也"的意思接于数量词之后，表示数量之最（之多或之少），意为"竟有…之多"、"（一个）??也没有" 1.1.3.助词［力*］1.131.主格助词［力*］［力*］通常用于表示主语，但在判断句 中，［力*］只在疑问词做主语的问句及其答句中表示主语 1.1.32格助词［力*］格助词［力* ］接在体言之后，除了可以作为主格助词、表示主语之外，还常常用在描写句中，表示形容词、形容动词所描述的对象，故又称"对象格"。。1.1.3.3.接续 助词［力*］接续助词［力*］接在各类活用词终止形（简体、敬体均可）后，起两种语法作用，一种表示逆接（转折）关系，意为"虽然??但是…"另一种表示顺接关系，起有机连接前后句的作用。 1.1.4.领格助词［? ］［? ］表示所属，为"的"之意 1.1.5.终助词［力、］［力、］接在句末，表示疑问，相当于汉语的"吗","呢"之意 1.1.6.接续助词疋］接形容词连用形［< ］后，表示并列、因果关系 1.1.7.提示助词仮］接否定式［肚—］之前，加强否定语气。 1.1.8.接续助词［力］接活用词终止形（简体敬体均可）之后，表示因果关系。 1.1.9.补格助词［^^ ］［］接在体言后，表示肯定的比较对象，以为"比 H 。 1.1.10.畐働词［］接在体言后，表示否定的比较对象，意为" （不）比…""没有??那么…" 1.1.11.终助词［相］［/］终助词又称感叹词，接在句子末尾，增添某种语感、语气。［相］主要用于表 示感叹、赞同或质疑，［/］主要用于提示、告知等场合。
be动词,一般动词和助动词
be动词、一般动词和助动词 一、be动词、一般动词的现在式 （1）be动词的现在式—am/are/is a.是（表状态） We are happy.—我们很高兴 b.在（表存在） She is in America.—她在美国 含be动词（am/are/is）的肯定句变成否定句时，在be动词后加not即可。 肯定句：主语+am/are/is… 否定句：主语+am/are/is+not… He is a good baseball player. 他是一个好棒球员 （否定句）He is not a good baseball player. = He’s not a good baseball player. = He isn’t a good baseball player. 含be动词（am/are/is）的肯定句变成疑问句时，将be动词拿到主语前，句尾加？即可。肯定句：主语+am/are/is… 疑问句：Am/Are/Is+主语…？ 1.That is his camera. 那是他的相机 （疑问句）Is that his camera?
2.The girl is a junior high school student. 那女孩是初中生 （疑问句）Is the girl a junior high school student? 动词开头的疑问句为一般疑问句，可用yes或no回答，而答句中的主语 （问句）Am/Are/Is+主语…？ （答句）Yes,主语+am/are/is No,主语+am/are/is not 1.Is that man your math teacher? Yes, he is./No,he is not. 2.Are you eating your lunch? Yes, I am./No, I’m not. （2）一般动词的现在式 凡是日常生活中具体的动作，如：eat-吃饭，walk-走路及抽象的动作如：like-喜欢，think-思考…皆为一般动词 a.大部分动词加s works/plays b.一般动词词尾为o/s/sh/ch时。加es go-goes/wash-washes/watch-watches c.一般动词词尾为字音+y时，去y加ies cry-cries/study-studies have和has has为have（有，吃）的单数形式 They have a lot of money.
中考英语情态动词、助动词、系动词专项讲解
中考英语情态动词、助动词、系动词专项讲解 中考英语情态动词、助动词、系动词专项讲解 语法精讲 1.can 和could 2.may 和might 3.need, must和have to 情态动词 4. should和ought to 5. shall, will和would 6. had better 1.can和coul d ① can表示能力，意为“能够，可以”，could用于过去时， 例如He can finish his homework al one. 他可以单独完成作业的。 He couldn’t cook when he was 18 years old. 他18岁时还不会做饭。 ② can表示推测，意为“可能”，在否定句中表示否定的猜测，意为“不可能”，could用于对过去的猜测，can’t be 不可能 例如：He could be cooking at this time yesterday. 他昨天这个时候有可能正在做饭。 He can’t be here be cause he has gone to American.他不可能会在这里，因为他已经去美国了。 ③ can表示请求语气，coul d的语气更委婉， 例如：Can I help you? / Coul d I help you? 有什么我可以为您效吗？ 拓展：be abl e to=can也为“能够”，用来表示能力（有人称和时态的变化） 例如：He is able to d eal with this problem. 他能解决这个问题的。 2.may和 might
① may表示请求，might语气更委婉， 例如：May I help you? Might I sit here? ② may表示肯定的推测，语气比can更弱，might对过去的推测 例如：Mary may be doing her homework now. May can be doing her homework now. can表达的推测语气比may更强，更有把握。 3. must和have to ①must表示命令、责任，意为“一定，必须”，must not/ mustn’t表禁止，“一定不要”， 例如：Children must stay away from strangers.孩子一定要远离陌生人。 You mustn’t play fire because it’s dangerous. 千万不要玩火，因为太危险了。 拓展：在表示禁止时，会用“No Doing”来表示，如No Smoking. / No Walking.等。 ② must表示推测，语气比can更强. 例如：Mr. Liu must be on holiday now because he is wearing pants. 刘老师现在肯定在度假因为他正穿着平底裤呢！（上课是要穿正装的） ③ Must作一般疑问句开头提问时：肯定用must回答，否定用needn’t或d on’t have to回答。 例如：Must I finish my homework now? Yes, you must. / No, you ne edn’t. ④ must 和have to 的区别： a) must没有人称、时态的变化，而have to根据人称、时态的变化，有不同的形式。 b) Must表示主观上必须做，而have to 表示客观需要。
Be动词和助动词的用法区别
1、be动词的用法。 be am / is are 现在时 was were 过去时 单数复数 英语中，be动词选用单数还是复数，要由主语来定，主语是单数，就用单数，反之用复数。 ◆句中含有be动词时： 肯定句：主语＋be ＋其他 否定句：主语＋ be ＋ not ＋其他 一般疑问句： Be ＋主语＋其他＋？ 特殊疑问句：疑问词（what / who / when / where）＋ be ＋主语＋其他＋？ I am a teacher. You are right. She is 16 years old. My father is at home. The students are playing games. My teacher was ill yesterday. There is a picture on the wall. There are two books on the table. ★ be动词用法歌： 我用am，你用are，is 连接他她它。单数名词用is，复数名词全用are。 变疑问，往前提，句末问号莫丢弃；变否定，更容易，be后not莫忘记； 疑问否定任你变，句首大写莫迟疑。 ★ be动词作谓语，它后面一般跟名词、形容词或介词短语。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”，即，我们常说的“主语 + 谓语 + 其他”。 ①主语为I 或复数名词、代词时： 肯定句： I / We / They / The students ＋动词原形＋其他＋。 We watch TV every night. 变否定：主语＋don’t ＋动词原形＋其他＋。 We don’t watch TV every night. 一般疑问句 Do + 主语 + 动词原形 + 其他 + ？ Do you watch TV every night? Yes, we do. / No, we don’t. 特殊疑问句：疑问词 + do + 主语 + 动词原形 + 其他 + ？ How often do you watch TV? ②主语为单数名词或代词时： 肯定句：主语 + 动词第三人称单数形式 + 其他 + 。 He watches TV every night. 否定句：主语+ doesn’t+动词原形+其他+。
be动词、助动词、情态动词讲解(基础篇)第一讲
be动词、助动词、情态动词讲解(基础篇) 1、be动词的用法。 be am / is was 单数 用单数，反之用复数。 ◆句中含有be动词时： 肯定句： 主语＋be ＋其他 否定句： 主语＋be ＋not ＋其他 一般疑问句： Be ＋主语＋其他＋？ 特殊疑问句： 疑问词（what / who / when / where）＋be ＋主语＋其他＋？ I am a teacher.You are right.She is 16years old.My father is at home. The students are playing games.My teacher was ill yesterday. There is a picture on the wall. There are two books on the table. ★ be动词用法歌： 我用am，你用are，is 连接他她它。单数名词用is，复数名词全用are。
变疑问，往前提，句末问号莫丢弃；变否定，更容易，be后not莫忘记； 疑问否定任你变，句首大写莫迟疑。 ★ be动词作谓语，它后面一般跟名词、形容词或介词短语。 她个子很高。她在教室里。 她是一个高个子的女孩。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”，即，我们常说的“主语+谓语+其他”。are were 复数现在时过去时英语中，be动词选用单数还是复数，要由主语来定，主语是单数，就①主语为I 或复数名词、代词时： 肯定句： I / We / They / The students ＋动词原形＋其他＋。 We watch TV every night. 变否定： 主语＋don’t ＋动词原形＋其他＋。 We don’t watch TV every night. 一般疑问句Do +主语+动词原形+其他+？ Do you watch TV every night? Yes, we do./No, we don’t. 特殊疑问句： 疑问词+ do +主语+动词原形+其他+？How often do you watch TV?
日语中助词用法
日语中助词用法 Revised final draft November 26, 2020
干货：日语助词完全整理总结篇（超全） 助词是没有活用（词尾变化）的附属词，接在其他词的后面，表示该词在句中的地位，或者表示该词与其他词的关系，或者给该词添加某种意义。 1.提示助词[は]在判断句中，[は]提示主语 2.提示助词[も][も]表示兼提，有"也"的意思接于数量词之后，表示数量之最（之多或之少），意为"竟有…之多"、"（一个）…也没有" 3.助词[が] （1）主格助词[が][が]通常用于表示主语，但在判断句中，[が]只在疑问词做主语的问句及其答句中表示主语 （2）格助词[が]格助词[が]接在体言之后，除了可以作为主格助词、表示主语之外，还常常用在描写句中，表示形容词、形容动词所描述的对象，故又称"对象格"。。 （3）接续助词[が]接续助词[が]接在各类活用词终止形（简体、敬体均可）后，起两种语法作用，一种表示逆接（转折）关系，意为"虽然…但是…"，另一种表示顺接关系，起有机连接前后句的作用。 4.领格助词[の][の]表示所属，为"的"之意 5.终助词[か][か]接在句末，表示疑问，相当于汉语的"吗"，"呢"之意 6.接续助词[て]接形容词连用形[く]后，表示并列、因果关系 7.提示助词[は]接否定式[ない.（あり）ません]之前，加强否定语气。 8.接续助词[から]接活用词终止形（简体敬体均可）之后，表示因果关系。 9.补格助词[より][より]接在体言后，表示肯定的比较对象，以为"比"。 10.副助词[ほど][ほど]接在体言后，表示否定的比较对象，意为"（不）比…"、"没有…那么…" 11.终助词[ね][よ]终助词又称感叹词，接在句子末尾，增添某种语感、语气。[ね]主要用于表示感叹、赞同或质疑，[よ]主要用于提示、告知等场合。 12.传闻助动词[そうだ][そうだ]可以接在各类活用词终止形后，表示传闻，其敬体形式为[そうです]，意为"（第一人称）听说…" 13.补格助词[に][に]接在表示场所的体言后，表示存在的场所，意为"在"。[に]接在名词或动词连用形之后，（更多内容关注微信公众号日语单词本）且后续意为"来、去"的动词（如：[行く]、[来る]…）时，表示来去的目的。 14[か]接在疑问词后，表示不确定，意为"某（些）"、"若干"。 15.并列助词[と][と]接于体言之后，表示并列，意为"和"。 16.副助词[や][や]介于体言之间，表示含言外之意的列举，意为"…啦…啦…（等等）"。 17.同位格[の][の]可以介于两个互为同位成分的体言之间，表示同位语。 18.宾格助词[を]介于体言和他动词之间，表示他动词的宾语。 19.宾格助词[で]接在体言之后，表示动作的场所，意为"在"。接在体言之后，表示行为动作的方式、方法、手段、工具等，基本意义为"用"，翻译时要灵活处理。 20.过去完了助动词[た][た]接在五段动词音便形、其它动词连用形、以及形容词连用形（かっ）、形容动词连用形（だっ）后，表示过去时态或完成时态的简体形式。助动词[た]本身也有活用变化，但在现代日语中常用的仅有三种：终止形、连体形、假定形。出了这三种活用形外，偶尔可见[た]的推量形[たろう]的用法，但现在通常用终止形[た]后续[だろう]、[でしょう]的形式表示推测。[た]的终止形即[た]的原形，表示简体过去完了时态。可用于结束句子，但更多的是用于后续助词、助动词，为句子增添某种意义。 21.[た]的连体形亦为[た]的原形，用于修饰体言，作定语，亦可后续某些助词。 22.[た]的假定形[たら][た]的假定形为[たら]，其后可以接[ば]，但通常省略。[たら]所表示的假定条件，往往有强调以前项成立为前提的内涵，意为"倘若…（实现了）之后的话，…"。
(完整版)什么是助动词
什么是助动词 1）协助主要动词构成谓语动词词组的词叫助动词（Auxiliary Verb）。被协助的动词称作主要动词（Main Verb）。 助动词自身没有词义，不可单独使用，例如： He doesn't like English.他不喜欢英语。 （doesn't是助动词，无词义；like是主要动词，有词义) 2）助动词协助主要动词完成以下功用，可以用来： a. 表示时态，例如： He is singing.他在唱歌。 He has got married.他已结婚。 b. 表示语态，例如： He was sent to England.他被派往英国。 c. 构成疑问句，例如： Do you like college life?你喜欢大学生活吗？ Did you study English before you came here?你来这儿之前学过英语吗？ d. 与否定副词not合用，构成否定句，例如： I don't like him.我不喜欢他。 e. 加强语气，例如： Do come to the party tomorrow evening. 明天晚上一定来参加晚会。 He did know that.他的确知道那件事。 3）最常用的助动词有：be, have, do, shall, will, should, would 助动词be的用法 1）be +现在分词，构成进行时态，例如： They are having a meeting.他们正在开会。 English is becoming more and more important. 英语现在越来越重要。 2)be + 过去分词，构成被动语态，例如： The window was broken by Tom..窗户是汤姆打碎的。 English is taught throughout the world.世界各地都教英语。 3）be + 动词不定式，可表示下列内容： a. 表示最近、未来的计划或安排，例如： He is to go to New York next week..他下周要去纽约。 We are to teach the fresh persons.我们要教新生。 说明：这种用法也可以说成是一种将来时态表达法。 b. 表示命令，例如： You are to explain this.对此你要做出解释。 He is to come to the office this afternoon.要他今天下午来办公室。 c.征求意见，例如： How am I to answer him?我该怎样答复他？
日语样态助动词
1、样态助动词「～そうだ」 接续形式：动词连用形，形容词、形容动词词干（特殊：いいーよさそうだ。ないーなさそうだ） 样态的「～そうだ」不接名词或者象「きれいな·赤い·かわいい」这种表示外观本身的形容词。否定形比较麻烦一点,动词用「～そうにない·～そうもない」、形容词用「～なさそうだ·～そうではない」。比如: 雨が降りそうだ→雨が降りそうにない／雨が降りそうもない おいしそうだ→おいしくなさそうだ／おいしそうではない 元気そうだ→元気ではなさそうだ／元気そうではない ★「～そうな＋名词」和「～そうに＋动词」 样态助动词「～そうだ」接动词、形容词后可以构成形容动词。因此修饰名词的时候「～そうな＋Ｎ」、修饰动词的时候就是「～そうに＋Ｖ」这种形式。比如： このリンゴはおいしそうだ。 →おいしそうなリンゴですね。 →リンゴをおいしそうに食べている。 ★样态助动词「～そうだ」的用法 样态助动词「～そうだ」是主要表示视觉印象的（从外观来判断）的助动词，但是用「今にも～そうだ」的形式也可以表示马上就要发生的状况。但是，即使是不能通过视觉来把握的动词，当表示含糊、暧昧的预感、直觉时，也可以用样态助动词「～そうだ」比如： ＜看得见的事态＞视觉印象 あっ、危ない！枝が折れそうだ。 今にも雨が降り出しそうですねえ。 彼はうれしそうに笑っていた。 このリンゴはあまりおいしくなさそうです。 ＜看不见的事态＞预感、直觉 まだ会議は始まりそうもないから、コーヒーでも飲んできましょう。 戦争はまだまだ続きそうですねえ。 ああ、寒い。風邪をひきそうだ。 この仕事は今日中に終わりそうです。 ★不能对过去的事态进行推量的样态助动词「～そうだ」
英语中be动词用法和助动词---do
英语中be动词用法和助动词---do 1. 由连系am，is，are构成的句子：变一般疑问句时把am，is，are提到句子的前面，句尾用问号即可。变否定句时直接在am，is，are后面加not即可。例如： 肯定句:He is a student. 一般疑问句: Is he a student? 否定句: He is not a student. 反问句: He is a student, isn't he? He isn't a student, is he? 画线提问: 对he提问: Who is a student? 对a student 提问: What is he? or What does he do? 2. 由情态动词can, may, should等构成的句子: 变一般疑问句时把can,may,提到句子的前面,句尾用问号即可.变否定句时直接在can,may,后面加not即可. 例如: 肯定句: She can swim. 一般疑问句: Can she swim? 否定句: She can not swim. 反问句: She can swim, can't she? She can not swim, can she? 画线提问: 对she提问: Who can swim? 对swim提问: What can she do? 3. 由行为动词构成的句子: 需要加助词do或does. 变一般疑问句时把do/does放在句子前面. 例如: 肯定句: They play football after school. 一般疑问句: Do they play football after school? 否定句: They don't (do not) play football after school. 反问句: They play football after school, don't they?