be动词、助动词、情态动词讲解(基础篇)Microsoft Word 文档
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＋。
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 / we did. / No, he / we didn’t.
特殊疑问句：疑问词 + did + 主语 + 动词原形 + 其他 + ?
When did he / you get up every morning last year?
★初中阶段，助动词一般只出现在否定句或疑问句中，助动词用在肯定句中表示强调。
3、情态动词的用法。
情态动词表示说话人的语气或情态。初中英语中，常见的情态动词有：can (could), may (might), should, must, will (would), ought to, have to, need等。
★情态动词的共同点：不受主语单复数的影响；情态动词后用动词原形。
情态动词和动词原形共同构成谓语部分。
肯定句：主语 + 情态动词 + 动词原形 + 其他 + 。
She / They can swim well.
否定句：主语 + 情态动词 + not + 动词原形 + 其他 + 。
She / They can not swim well.
一般疑问句：情态动词 + 主语 + 动词原形 + 其他 + ？
Can she / they swim well?
Yes, she / they can. / No, she / they can’t.
特殊疑问句：疑问词 + 情态动词 + 主语 + 动词原形 + 其他 + ?
Why can she / they swim well?
Who can swim well?
练习
ⅰ. am, is, are 专项练习。
1. I ___ a boy. ____ you a boy? No, I __ not.
2. The girl ______ Jack’s sister.
3. The dog ______ tall and fat.
4. The man with big eyes ______ a teacher.
5. ______ your brother in the classroom?
6. Where ____ your mother? She _____ at home.
7. How _______ your father?
8. Mike and Liu Tao ______ at school.
9. Whose dress ______ this?
10. Whose socks ______ they?
11. That ______ my red skirt.
12. Who ______ I?
13. The jeans ______ on the desk.
14. Here ______ a scarf for you.
15. Here ______ some sweaters for you.
16. The black gloves ______ for Su Yang.
17. This pair of gloves ______ for Jim.
18. Physics _______ my favorite subject.
19. The police _____ running after the thief.
20. Our class ________ going to the zoo.
达闻中小学生课外辅导中心学员辅导资料
ⅱ. 将下列句子奇数变成否定句，偶数变疑问句。
1. I like music.
2. He walks to school.
3. They often have English on Monday.
4. The boys are swimming in the river.
5. She smiles happily.
6. Mary went to the zoo last week.
7. The workers made many cars in the factory.
8. We should protect the innocent.
9. Her parents fly to London twice a month.
10. All my classmates climbed the Tai Mount last autumn.
11. The teacher asks us to clean the classroom.
12. He will go back to America at the end of the year.
ⅲ. 将下列句子先变成否定句，一般疑问句，再对划线部分提问。
1) Candy and Sam are cleaning their room.
2) Plants grow fast in spring.
3) My brother bought some flowers for my mother.
4) We write to each other twice a month.
4
英语语法-助动词和情态动词用法及习题
目录 1助动词和情态动词的定义 (2) 2 can，may，must (3) 3 Will you～？和Shall I（we）～？ (10) 4 would和should (14) 5 have to (16) 练习题 (17) 答案 (18)
1助动词和情态动词的定义 在英语中，助动词一般没有词义，主要帮助构成谓语，表示时态、语态或构成疑问及否定形式。对于助动词，同学们一般了解即可。 情态动词与助动词不同，它有词义，但它也和助动词一样，不能单独作谓语，它必须和其他动词一起构成谓语，另外重要的一点是情态动词没有人称和数的变化；情态动词后必须跟动词原形。 （×）She cans swim well. （×）She can swims well. （○）She can swim well. （○）She swims well. 即使主语是第三人称单数（例如she）can也不能加“s”。 句子中有情态动词can时，即使主语是第三人称单数，也不能在一般动词（例如swim）上加“s”。 1 助动词的种类 1.be（am，are，is，was，were，been，being） 它与现在分词结合，可以构成进行时态（参见第九章），与过去分词结合可以构成被动语态（参见第十三章）。 I am reading the book.我正在读这本书。 The book was written by me. 这本书是我写的。 2. have（has，had，having） 它与过去分词结合，构成完成时态（参见第十一章）。 I have finished my homework. 我已经写完作业了。 3.shall（should），will（would）
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?
情态动词练习题带答案
情态动词练习题带答案 一、单项选择情态动词 1．—I feel a little nervous. —Take it easy. You __________ have difficulty passing the exam when you have prepared for it well. A．mustn’t B．needn’t C．may not D．shouldn’t 【答案】D 【解析】 【详解】 考查情态动词。句意：——我觉得有点紧张。——不要着急。当你准备充分时，通过考试应该不会有困难。A. mustn’t禁止，不允许；B. needn’t不必；C. may not可能不会；D. shouldn’t不应该。结合句意可知答案为D。 2．—I have something important to tell John. But I can’t find him. —His cell phone is here, so he ________ have gone too far. A．mustn’t B．needn’t C．wouldn’t D．can’t 【答案】D 【解析】 【详解】 考查情态动词。句意：——我有重要的事情要告诉John，但是我找不到他。——他的手机在这儿，所以他不可能走得太远。根据句意可知，此处是对过去的一种猜测，此处是表达不可能……，用can’t have done。故选D。 3．It has been announced that all the candidates ___________ remain in their seats until all the papers have been collected. A．shall B．could C．would D．ought 【答案】A 【解析】 【详解】 考查情态动词用法。句意：据宣布，所有的候选人都要坐在位置上，直到所有的试卷都被收齐。根据句意可知本句是考试规则，情态动词shall可以表示“按照规则/规定/法律要做的事情”，符合本句语境。故A项正确。 4．—It’s really great to have a computer to store my photos. —Don’t count on it too much. It ________ break down and you’d better mak e a copy of them. A．must B．can C．should D．will
助动词和情态动词
助动词和情态动词 1. ---Good morning. I've got an appointment with Miss Smith in the Personnel Department. ---Ah, good morning. You______ be Mrs. Peters. （10北京） A. might B. must C. would D. can 2. I have told you the truth. ______ I keep repeating it? （10江西） A. Must B Can C May D Will 3. Jack described his father, who _______a brave boy many years ago, as a strong–willed man （10安徽） A. would be B. would have been C. must be D. must have been 4. I_______ have watched that movie —it’ll give me horrible dreams. （10山东） A. shouldn’t B. needn’t C. couldn’t D. mustn’t 5. Doctors say that exercise is important for health, but it _______ be regular exercise. （10辽宁） A．can B．will C．must D．may 6．Wine ____ do good to people’s health if drunk properly. A. can B. should C. must D. might 7. But for the help of my English teacher, I ____ the first prize in the English Writing Competition. A. would not win B. would not have won C. would win D. would have won 8. My sister met him at the Grand Theatre yesterday afternoon, so he _____ your lecture. A. couldn’t have attended B. needn’t attend C. mustn’t have attended D. can’t attend 9. ---Has Mr. Tom White arrived? ---Yes, already. ____ he wait outside or just come in? A. Shall B. May C. Could D. Must 10. Walking in space ____ sound easy, yet great care and skills are needed. A. should B. shall C. may D. must 11. ---Amazing! You ____ wear slippers at work! ----Don’t you know it’s a fashion? A. must B. should C. can D. may 12. ---The two astronauts had been trained for long before they flew to space. ---Oh, they ____ quite a lot of difficulties. A. might go through B. may go through C. should have gone through D. must have gone through 13. ---Can I pay the bill by check? ---Sorry, sir. But it is the management rule of our hotel that payment ____ be paid in cash. A. will B. can C. should D. shall 14. ---Catherine looks sad. Did you tell her about the accident? ---Yes, but I ____ her just before her final exams.
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
人教版英语英语情态动词专项练习经典含答案
人教版英语英语情态动词专项练习经典含答案 一、初中英语情态动词 1．—Must I clean the classroom now? —No, you_______. A. mustn't B. can't C. needn't 【答案】 C 【解析】【分析】句意：--我必须现在把教室打扫干净吗？--不，你不必。must I do …?的否定回答是No, you needn't 或者 No , you don't have to 。根据是否定回答，故选C。 2．—Where is Monica? I can't find her anywhere. —She be in the library. She loves reading books when she is free. A. must B. need C. can't 【答案】 A 【解析】【分析】句意：——莫妮卡在哪？我到处都找不到她。——她肯定在图书馆，她喜欢空闲时看书。A肯定，肯定句中表示推测，B需要，C不可能，否定句中表示推测，根据 She loves reading books when she is free ，可知是肯定句表示推测，故选A。 【点评】考查情态动词，注意情态动词表推测的用法。 3．Please don't make so much noise. I ________ hear the speaker very well. A. needn't B. can't C. shouldn't D. mustn't 【答案】 B 【解析】【分析】句意：请不要发出那么多噪音。我不能很好地听清楚发言者的话。needn't不必；can't不能；shouldn't不应该；mustn't禁止。根据前半句的Please don't make so much noise.可知别人发出了太多噪音，所以他无法听见演讲者的话，故用情态动词can't。故选B。 【点评】考查情态动词，结合句意和词义做出判断。 4．A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man. A. can't; can B. may not; must C. can't; must D. may not; can 【答案】 B 【解析】【分析】句意：一个勤奋的人可能不会成为一位伟大的科学家，但是一位伟大的科学家一定是一个勤奋的人。can't不可能，不会；can可能，能，会；may not 可能不；must 必须，一定；结合句意，可知，第一个空为“可能不”，第二个空为“一定”，故答案为B。
英语助动词和情态动词及练习
英语助动词和情态动词及练习 一、概述 不同的时态（一般式、进形式、完成式、将来式），不同的语态（主动、被动），不同的语气（祈使、陈述、虚拟），不同的结构（肯定、否定、疑问），以及说话者本身的态度或命令、请求、愿望、可能等，所有这些都要借助于助动词和情态动词表达出来。助动词一般没有词意，不能单独作谓语动词，除非省略句中。他们只参加时态、语态、语气或否定、疑问结构。情态动词有词义，可以用来表示说话者的语气和态度。主要的助动词和情态动词如下表： 二、助动词 助动词一般没有词意，不能单独作谓语动词。其作用在于帮助构成各种时态、语态、否定、疑问等。 1、助动词be（am, is, are, was, were, being, been）的用法 （1） be后跟现在分词构成进行时态。 Who is playing the violin?谁在拉小提琴？ She was reading a book then.那时她正在读书。 （2）be后跟过去分词构成被动语态。 He was asked to do the work.有人要他干这件工作。 You are invited to attend the meetintg.有人邀请你参加会议。 （3）be 后跟不定式作谓语，有如下几种情况： ①表示计划、安排将要发生的事。 Who are we to meet?我们要见谁呀？ I'm to have supper with John this afternoon.今天下午我要与约翰一起吃晚饭。 ②表示指示、命令，否定式表禁止。 You are to see the headmaster today.今天你必须去见校长。 You are not to enter the room without permission.未经允许你不能进入房间。 ③表示义务、责任等，同should。 You are to be back before 5.你得在5点钟以前回来。 What is to be done?该干什么。 ④表示可能性，与情态动词may, can同义。 Such books are to be found in any library.这种书任何图书馆都有。 Not a sound was to be heard.一点声响也没有。 ⑤表示后来发生的事，可以用来表示命运或注定 They say good-bye, little knowing that they were never to meet again.他们告别了，没想到再也不能相见了。 He was to regret the decision.他有一天会后悔做出这一决定的。 ⑥用于习语 Where am I to go? 我该向何处去？ What am I to do? 我该怎么办？ 2、助动词have(has, had, having)的用法 （1）助动词have可以构成完成时或完成进行时
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。）
情态动词练习题答案
精选练习情态动词 ． 1．You________read that article if you don’t want to A．haven’t B．can’t C. mustn’t D．needn’ｔ2．I_______get this done immediately or it will be too late． A. must B．can C．may D．might 3．The house is dark；the Browns_________ to bed． A．may go B．should go C．should have gone D. must have gone 4．“That car must have cost a 1ot of money.” “Oh，no，_____.” A．it mustn’t B．it hasn’ｔ C．it doesn’t D．it didn’ｔ 5. I _______asleep in the corner，for 1 remember nothing of what happened during the night． A．might fall B. must fall C．must have fallen D. can have fallen 6．I’m feeling sick．I_________so much chocolate． A．needn’t have eaten B. couldn’t have eaten C．mustn’t have eaten D．shouldn’t have eaten 7. My wallet is nowhere to be found．I________when 1 was on the bus． A．must have dropped it B．must drop it C. should have dropped it D．ought to have dropped it 8．Mr．Green________my letter，otherwise he would have replied before now．A．must have received B．must have failed to receive C．must receive D. must fail to receive 9. You could have done much better yesterday．Why_________? A．didn’t you B．couldn’t you C. hadn’t you D．shouldn’t you 10．They have done things they ought_______ A．not to do B. not to be done
be动词-情态动词及助动词用法
七年级英语双休日作业 班级：姓名：等级 英语句型变化总结练习 1、含有be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: a student? 否定句: He a student. 肯定句：We are from China. 一般疑问句: from China? 否定句：We from China 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:she swim? 否定句: She swim. 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. 变否定句时在主语后面加don’t / doesn’t , 谓语用动词原形。例如: 肯定句: They play football after school. 一般疑问句: play football after school? 否定句: They football after school. 肯定句：Tom watches TV every day. 一般疑问句: Tom TV every day? 否定句: Tom TV every day.
注意：变否定句时相关词的改变 肯定句变否定句时，除将谓语变为否定式外，句中其他词语也可能随之改变： 如将some改为any，too和also改为either，and改为or等：There are some birds in the tree. 树上有些鸟。 →There aren’t ______ birds in the tree. 树上没有鸟。 He likes the book, too. 他也喜欢这本书。 →He doesn’t like the book, ______. 他也不喜欢这本书。He likes singing and dancing. 他喜欢唱歌和跳舞。 →He doe sn’t like singing ______dancing. 他不喜欢唱歌也 不喜欢跳舞。补充练习： 根据句后括号内的要求，填入句中所缺的词： 1. I know the answer. (一般疑问句) ______ ______ know the answer? 2. We can see some birds. (一般疑问句) ______ ______ see ______ birds? 3. There is a computer in the house. (一般疑问句) ______ ______ a computer in the house? 4. There are some flowers on the teachers’ desk. (一般疑问句) ______ ______ any flowers on the teachers’ desk? 5. There are some apples on the tree. (否定式) There ______ ______ ______ apples on the tree. 6. I think he is old. (否定句) I ______ think he ______ old.
语法知识—情态动词的综合训练
一、选择题 1．— May I have some wine? — No, you . You have to drive home later. A．shouldn't B．needn't C．mustn't D．may not 2．(2018·山东临沂) Could you please speak a little louder? I ______ hear you very well. A．can’t B．mustn’t C．shouldn’t D．needn’t 3．I hope you __________ to my birthday party. A．to come B．can come C．comes D．are come 4．I’ve bought a nice necklace for Jo’s birthday. She _____like it, but I’m not sure. A．can B．may be C．might D．must 5．The designer has tried every possible way to make the robot light, so you _____ worry about its weight. A．must B．may C．can’t D．needn’t 6．—Is that Kate’s green bike? —It ____________be hers. She likes pink. A．can’t B．could C．mustn’t D．might 7．—Is that cap Bob’s? —No, it ________ be his. His is blue. A．can’t B．mustn’t C．needn’t D．may not 8．—Hi, Lucy, may I sit here? —No, ________. The seats are for teachers and parents. A．you needn't B．you aren't C．you mustn't D．you don't 9．The milk tastes bad. You’d better_______. A．throw it away B．to throw it away C．throw them away D．to throw them away 10．You run with the train when it is coming. It’s dangerous. A．may not B．mustn’t C．needn’t 11．We _______ keep the new traffic law and learn how to protect ourselves. A．may B．should C．can D．need 12．I’m sorry, children over 1.4 me ters________pay the full price for the show. A．may B．must C．can D．ought to 13．—Could you please hang out with me this afternoon? —______. I have to make a plan for Clean-Up Day. A．Sorry, I couldn’t B．Sorry, I can’t C．Sure, I can D．Sure, I could 14．Since the road is muddy,it ________last night, ________? A．must be rained; wasn’t it B．must have rained; didn’t it
be动词、助动词、情态动词讲解(基础篇)Microsoft Word 文档
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＋。 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?
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
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.
情态动词专项练习及答案
情态动词专项练习 1. Jean have kept his promise. I wonder why he changed his idea. A. must B. should C. need D. would 解析：选B. “should have +过去分词” 表示“过去本来应该(但没能)做某事”； keep one’s promise 意为“信守诺言”。 2. Jane have come to the party, but she not find the exact time. A. could; could B. might; could C. should; could D. should; would 解析：选A.“ could have+过去分词表示过去本来应该(但没能)做某事”。 3. So many mistakes in your homework! You more careful. A. may be B. had to C. would be D. should have been 解析：选D. “You should have been more careful”. 意为：你本来应该更细心的。 4．Her brother be at home now, because he was seen playing basketball in the stadium just now. A. mustn’t B. needn’t C. can’t D. shouldn't 解析：选C. can’t be at home 意为：不可能在家。 5．---I can’t understand wh y our boss is late. ---He the early bus. A. could miss B. may have missed C. can have missed D. might miss 解析：选B. “may have+过去分词”表示对过去动作的判断，意为：可能做了某事。注意：can表示可能时，只能用于疑问句和反问句。 6. She didn't answer the phone, she ______ asleep. A. may be B. must be C. should have been D. must have been 解析：选D. 表示：对过去发生的事情的肯定推测。 7．The little girl’s eyes were red. She ______. A. may cry B. must cry C. must be cried D. must have been crying 解析：选D. 意为：她刚才肯定一直在哭。对过去某事正发生的推测。 8．He______ his supper now, for the dining hall is still closed. A. can’t be having B. needn’t be having C. mustn’t be having D. shouldn't be having 解析：选A. 对现在正在发生的事情的否定推测。 9．I parked my bike behind the building, but now it is gone. It ________ . A. may be stolen B. must be stolen C. must have been stolen D. must have stolen 解析：选C. 对过去发生的事情的肯定推测的被动式。 10. ______ Mr. Black_______go to work by ferry before the bridge was built? A. Did; used to B. Use; to C. Did; use to D. Does; use to 解析：选C. used to do的疑问式，可以是Used+主语+to do ?或Did +主语+use to do? 11. The hotel is only a stone’s throw away, you ______ take a bus. A. need not to B. not need to C. don't need D. need not 解析：选D. 说话人认为不必要乘车, need 为情态动词。 12. I am busy now, _______ my brother do it for you ? A. Will B. Shall C. Must D. May 解析：选B. 在疑问句中shall 用于第三人称，也表示征求意见。 13. ---You needn’t do it right now, need you? ---Yes I am afraid I ______ . A. need B. needn’t C. must D. mustn’t 解析：选C. Yes的意思是：不。意为：恐怕我必须现在就做。 14.My English-Chinese dictionary has disappeared . Who _____ have taken it? A. should B. must C. could D. would 解析：选C. could/can have done 用于否定推测和疑问推测。 15. ---The room is so dirty._______ we clean it? ----Of course.