初中动词不定式专题讲解及练习(全面)
语法：动词不定式
动词不定动式是一种非谓语动词形式，它没有人称和数的变化，在句子中不能作谓语，但可以作除谓语之外的其它任何句子成分（主语、表语、宾语、宾语补足语、定语和状语）；动词不定式具有名词、形容词和副词的特征，同时还保持动词的某些特点，既可以有自己的宾语和状语，动词不定式和它的宾语和状语构成不定式短语。
一、构成：to do .否定式not to do
二、常见时态：一般时to do 进行时to be doing 完成式to have done
完成进行式to have been doing
三、动词不定式在句子中的成分
1、作句子的主语:现实中常用it作形式主语，而把真正的主语动词不定式（或短语）后
置。
比较下列句子
To lear n from your frie nds is importa nt.=lt is importa nt to lear n from your frie nds . ______ To leave without say ing goodbye is impolite.= It is impolite to leave without saying ________ goodbye.
To chat with Miss White is a pleasa nt thi ng.=lt is a pleasa nt thi ng to chat with Miss ______ White.
To walk to school takes me ten minu tes.=lt takes me ten minu tes to walk to school. _______ 句型总结
It is + adj. + of sb. to do sb：?i= are +adj. +to do 在以某些表示人的品质、特征等的形容词（如kind、good、nice、wrong、clever、right等）作表语时，不定式之前常加一个引起的短语，说明不定式指的是谁的情况（可以理解为某人的好，坏，聪明，愚蠢，对，错等等）。
It is very kind of you to help me.
It ' s not polite of himto speak to old people like that.
It is + adj. + for sb. to do …乞aisb+Odj. +to do 女:果要说明不定式表示的动作是谁做的，则在不定式前加一个for引起的短语，即不定式的逻辑主语。
It is n ecessary for us to study hard ___
It is easy for him to speak En glish.
动词不定式作主语练习
1. It's our duty the room every day.
A. to clea n
B. clea ned
C. clea n
D. cleans（甘肃省）
2. It's hard for us En glish well.
A. learn
B. lear ns
C. to lear n
D. learning（江西省）
3. 建造这座立交桥将花费工人们一年多的时间。
It will _____ the workers over a year _________ the flyover.（北京市海淀区）
4. It's very nice ____ you to get me two tickets _________ the World Cup.
A. for ，of
B. of，for
C. to，for
D. of，to（安徽省）
KEYS: 1. A 2.C 3. take, to build 4. B
2、作句子的表语:不定式放在be动词后面，用作表语如：
Her dream is to be a policema n.
My job is to help the patie nt.
Your task is to clea n the classroom.
My dream is to own a robot.
The doctor ' s suggesti o nase more exercise.
The best way is to talk to your pare nts.
His pla n is to travel to Beijing this summer. ___
My purpose is to help you solve this problem.
3、作句子的宾语:不定式放在及物动词后，用作宾语。能跟不定式作宾语的动词（及物）
彳艮多，常见的有want, like, hate, wish, hope, prefer, try, ask, start, begin, decide, learn, choose, agree, expect, remember, forget, plan, decide, would like, need, choose, agree, promise, refuse, set out, man age, prete nd,
I want to go home.
The workers demanded to get better pay.
They began to read and write.
She forgot to close the door.
He wan ted to borrow my CD player.
I hope to speak En glish well.
The workers demanded to get better pay .
I hope to hear from you soon.
Joh n does n wa n t to be the host of the charity show.
They are trying to solve the problem by himself.
Millio ns of people have learned to use computers.
有些动词既可跟不定式作宾语，也可跟动名词作宾语，但含义不同：
forget to do sth. 忘记要做某事
forget doi ng sth. 忘记曾经做过某事stop to do sth. 停下来去做某事stop doing sth.停止做某事
go on to do sth.继续做另一件事 go on doing sth.继续做原来在做的事 n eed to do sth.需要做某事 need doi ng sth. 需要被做
Don ' t forgfeo turn off the lights before leaving. Father must stop smok ing.
This bike n eeds repairi ng/me nding.
注意1 ：动词不定式作宾语时如带有宾语补足语，则要把不定式放在后面，用
it 作形
式主语，构成 主语+动词+it+宾补(形容词、名词)+不定式”结构
I found it necessary to talk to him again. I found it important to lear n En glish. I fond it difficult to lear n physics.
注意2 :常用带to 的动词不定式作宾语补足语的动词有
want, ask, tell, order, get,
wish, allow, invite, teach, encourage, beg,
等。构成 “ vt,+sb.+(not)to do sth. 结构。
The teacher told us to read the text. He asked me not to tell you the news. His pare nts did n ' t allow him to play. I expect you to give me some help.
Mr.Lu asks ue to hand in our homework on time. The docter advised Mr. Gree n to drink more water. Mr. Wu tells the students not to shout in class Mrs. Read whishes her son to learn English well.
注意3 :不定式作宾补省去to 的情况（在被动语态中则to 不能省掉）
常用省去to 的动词不定式作补足语的动词有：一感（feel ）、二听（hear, listen to ）、 三让(make, let, have )、四看(look at, see, watch, notice, observe )、半帮助 help (可 带 to ，也可不带 to help sb (to) do sth )
I made him tblo his work.. ---------------------- Please liste n to me to_s ing this song aga in.
In ternet bars must n
'lett an ybody watch bad thin gs, especially childre n. --------------- l et
sb.do sth.
He ofte n helps （to ） clea n the room.
Mr. Zhang always helps us （to ） learn English.
make sb.do sth.
liste n to sb.do sth. n my door. ------------------- The boss made the girl to w°rk ten hour a day. You must watch me tdlo everything --------------
I felt some one to
feel sb.do sth. make sb.do sth.
watch sb.do sth.
被动语to要加上
He was made to do his work （by me）
They are made to work for 12 hours a day.
He was heard to speak in the n ext room.
Joh n was made to wash the car for a week as a puni shme nt.
The patie nt was warned not to eat food after the operati on.
Intern et bars mustn ' t let anybody watch bad things, especially children.
动词不定式作宾语练习
1. He wants __ some vegetables.
A. buy
B. buying
C. to buy
D. buys （山西省）
2. Don't forget ______ your homework with you whe n you come to school.
A. to bring
B. bringing
C. to take
D. taking （福建省）
3. He found it very difficult __
A. sleeping
B. sleeps
C. slept
D. to fall asleep （湖南省）
4. Robert ofte n asks us _____ his Chin ese, so his Chin ese is much better tha n before.
A. help him
B. to help him with
C. to help with
D. helps him with （江苏省）
5. Mr Li ofte n teaches his Japa nese friends ____ Chin ese food.
A. cook
B. cooks
C. to cook
D. cooked （甘肃省）
6. We saw him _ the buildi ng and go upstairs.
A. to enter
B. enter
C. entering
D. entered （河南省）
7. So much work usually makes them __very tired.
A. to feel
B. feels
C. feeli ng
D. feel
8. Your father is sleep ing. You'd better ____ .
A. not wake up him
B. not to wake up him
C. not wake him up
D. not to wake him up （陕西省）
9. I was made __ my homework in the after noon.
A. do
B. doi ng
C. to do
D. did
Keys : 1. C 2. A 3. D 4.B 5. C 6. B 7. D 8. C 9. C
4、作句子的定语:|不定式作定语时，应放在被修饰词的后面作后置定语。如果不定式中的动
词是不及物动词，则不定式中要有介词.
I want to get somethi ng to read duri ng the holiday.
We have a lot work to do .
She is the first pers on to think of the idea.
I have someth ing in terest ing to tell you.
He is look ing for a room to live in . ---- -------------------------------- l ive 是不及物动词
There is nothing for us to worry about. ------ ------------------------- w orry 是不及物动词
Mr Wu is always the first to come and the last to leave. _____
There is no n eed to trouble him. 没有必要去烦他
Have you got anything importa nt to tell me? 重要的事情去告诉我
I ' ve gobthing to worry about. 没有什么去担心
I ' m thirsty. Gie me something to drink. 给我些东西去喝
Spring is the best seas on to pla nt trees. ___ 春季是最好的季节去种树
We all have a cha nee to go to college. 我们都有机会去上大学
动词不定式作定语练习
1. Would you like somethi ng __ ?
A. drink
B. drinking
C. to drink
D. drinks （湖北省）
2. I have a lot of homework _____ .
A. do
B. doing
C. did
D. to do （河南省）
3. He is not an easy man _____ .
A. get on
B. to get on
C. get on with
D. to get on with （山东省）
5、作句子的状语：动词不定式位于不及物动词之后作状语，可作目的、结果、原因状语。
come to do sth.
go to do sth.
stop to do sth.
in order （not） to do
too + adj. + to do sth.
adj.\adv. + eno ugh to do sth
so as to ,
eno ugh to ,
on ly to ,
She came here to borrow an En glish book. （目的）
Let ' s stop to have a rest.
She is too young to go to school. （结果）
He runs fast eno ugh to catch a horse.
I ' m sorry to make youwait here so long. （原因）
We are surprised to see such beautiful ani mals.
In order to improve his English, Tom goes to the English corner every day.
I was too tired to fall sleep.
She ran fast to catch the first bus.
He is rich eno ugh to buy a car.
A group of young people got together to discuss this questi on. 目的
In order to help him, we would do everything we can.（目的）
I ' m too tired to do well.结果
He is old eno ugh to go to school . 结果
动词不定式做状语练习
1. She went _____ her teacher.
A. to see
B. looks
C. saw
D. seeing （江西省）
2. Meimei likes En glish very much. She does her best ____ En glish well.
A. learn
B. learning
C. to learn
D. learns （四川省）
3. I'm sorry _____ that.
A. hears
B. hearing
C. hear
D. to hear （河北省）
4. I'm sorry _____ you.
A. trouble
B. to trouble
C. troubling
D. troubled （吉林省）
5. My mother was very glad __ h er old frie nd.
A. to meet
B. meet
C. met
D. meets
6. The panda is so fat that it can't go through the hole.（改为意思相同的句子）
The hole _________________________ such a fat panda to go through.（广东省）
7. The ice on the lake was so thin that people could n't skate on it.（改为意思相同的句子）
The ice on the lake was n't ___ e no ugh __ people ______________ .（广东省）
KEYS : 1. A 2. C 3. D 4. B 5. A
6. is，too，small，for
7. thick ，for，to，skate ，on
动词不定式前面可以带疑问代词what, which, who 或疑问副词how, when, where, why 等。这种结构起名词的作用，在句子里用作宾语、主语、表语等，或者单独使用。要注意的是，why后面的不定式不带to。例如：I don ' t know what to try next. （作宾语）
动词不定式专项练习
动词不定式专项练习 （一）选择 1. The policeman told the little boy _____ football in the street. It’s dangerous. A. not play B. not playing C. not to play D. to play 2. Martin looks so well. We’ve never seen him ______ so well before. A. is looked B. is looking C. to look D. look 3. They preferred ______ in bed rather than ___ horses. A. to lie; to ride B. lying; riding C. to lie; ride D. lying; ride 4. —What do you think of tomorrow’s football match? — ______difficult for us ______ the match. A. We’re; to win B. We’re; winning C. It’s; to win D. It’s; winning 5. — Hi, Peter. Why are you in such a hurry? — ______the 7:30 train. A. Catch B. To catch C. Catching D. Caught 6. Don’t forget _________ the letter. A. to send B. send C. sending D. being sent 7. The chair looks very old, but in fact it is very comfortable to _________. A. sit B. sit on C. be sat D. be sat on 8. Is ______ necessary to return the book tomorrow? A. this B. that C. it D. which 9. I’m afraid they would not allow him ________ here. A. to smoke B. smoking C. smokes D. smoke 10. Mother told me ________ the water before I drank it. A. boiling B. boiled C. boil D. to boil 11. On my way home, I stopped _______ some food. A. buy B. to buy C. buying D. bought 12. John was made _______ the car for a week as a punishment. A. to wash B. washing C. wash D. to be washing
高中动词不定式用法讲解及练习电子教案
高中动词不定式用法讲解及练习
Grammar Presentation---动词不定式 一、不定式的句法功能 ●不定式作主语 ?To learn a foreign language is not easy.学习外语不是一件容易的事。 ◎不定式短语作主语时，常用it作形式主语来代替它的位置，而将真正的主语（不定式短语）移到谓语之后 ?It’s a great honor to be invited to Mary’s birthday party.很荣幸被邀请参加玛丽的生日聚会。 ●不定式作宾语 ◎作动词宾语 ◇下列动词常接不定式作宾语，如：agree, arrange, ask, beg, choose, dare, decide, demand,expect, fail, fear, hope, manage, offer, plan, prepare, pretend, promise, ?They hope to find new resources for mankind.他们希望为人类找到新资源。 ◇如果不定式作宾语且有自己的补语，常用“it”作形式宾语，而把真正的宾语放在后面。 下列动词常用it作形式宾语，如：believe, consider, feel, find, know, make ?I know it impossible to finish so much homework in one day. 我知道在一天中完成这么多的作业是不可能的。 ●不定式作表语 ◎不定式作表语时，一般紧跟在系动词后，说明主语的内容 ?The first step is to check the victim’s breathing.
初中动词不定式专题讲解及练习(全面)
语法：动词不定式 动词不定动式是一种非谓语动词形式，它没有人称和数的变化，在句子中不能作谓语，但可以作除谓语之外的其它任何句子成分（主语、表语、宾语、宾语补足语、定语和状语）；动词不定式具有名词、形容词和副词的特征，同时还保持动词的某些特点，既可以有自己的宾语和状语，动词不定式和它的宾语和状语构成不定式短语。 一、构成：to do .否定式not to do 二、常见时态：一般时to do 进行时to be doing 完成式to have done 完成进行式to have been doing 三、动词不定式在句子中的成分 1、作句子的主语:现实中常用it作形式主语，而把真正的主语动词不定式（或短语）后 置。 比较下列句子 To lear n from your frie nds is importa nt.=lt is importa nt to lear n from your frie nds . ______ To leave without say ing goodbye is impolite.= It is impolite to leave without saying ________ goodbye. To chat with Miss White is a pleasa nt thi ng.=lt is a pleasa nt thi ng to chat with Miss ______ White. To walk to school takes me ten minu tes.=lt takes me ten minu tes to walk to school. _______ 句型总结 It is + adj. + of sb. to do sb：?i= are +adj. +to do 在以某些表示人的品质、特征等的形容词（如kind、good、nice、wrong、clever、right等）作表语时，不定式之前常加一个引起的短语，说明不定式指的是谁的情况（可以理解为某人的好，坏，聪明，愚蠢，对，错等等）。 It is very kind of you to help me. It ' s not polite of himto speak to old people like that. It is + adj. + for sb. to do …乞aisb+Odj. +to do 女:果要说明不定式表示的动作是谁做的，则在不定式前加一个for引起的短语，即不定式的逻辑主语。 It is n ecessary for us to study hard ___ It is easy for him to speak En glish. 动词不定式作主语练习 1. It's our duty the room every day. A. to clea n B. clea ned C. clea n D. cleans（甘肃省）
动词不定式用法讲解·优选.
动词不定式的用法讲解 一、动词不定式： 构成：to + 动词原形（to只是不定式符号，没有意义） 动词不定式作主语较长时，常用it作形式主语，而将真正的主语放在句末。 1.It + is/was+形容词+(for sb.) +动词不定式 To learn English well is useful. = It’s useful to learn English well.学好英语是有用的。 To protect environment is important for us. = It’s impor tant for us to protect environment.对于我们来说保护环境是很重要的。 2. It is / was + kind / good/ nice/ clever + of sb. + 动词不定式 It’s very kind of you to help me. 你帮助我真是太好啦。 It’s very clever of you to do like that. 你那样做真的太聪明啦。 3. It takes ( took , will take ) sb. some time to do something. (做某事花费某人…时间) 4.It is a good idea to do sth. 作宾语 1.常见的跟不定式作宾语的动词有： want to do sth. decide to do sth. hope to do sth. plan to do sth. offer to do sth. agree to do sth. learn to do sth try to do sth prefer to do sth promise to do sth. need to do sth. expect to do sth. 2. 主语+ find / think + it +形容词+ (for sb.) + to do I find it easy to read English every day. 我发现每天读英语和容易的。 He felt it hard to sleep.他觉得很难入睡。 I think it very interesting to learn English. 我认为学英语很有趣。 We found it impossible to cross the river. 我们发现过河是不可能的。 3.特殊疑问词+动词不定式作宾语 Can you tell me how to get to the post office? I didn’t know what to do next.
动词不定式专项讲解及训练(有答案)
动词不定式专项训练 A. to solve B. to be solve C. being solved D. solving A. for her to return B. that she must return C. her returning D. of him to return A. costs... to get B. costs... getting C. takes... to get D. takes... getting A. to explain B. to have been explained C. to be explained D. to be explaining A. to learn B. to be learning C. to have learned D. to have been learning Keys: 1-5 A A C C C
专项练习 1.The flu is believed_______ by viruses that like to reproduce in the cells inside the human nose and throat. A. causing B. being caused C. to be caused D. to have been caused 2.There is a new problem involved in the popularity of private cars road conditions need A. that. .. to be improved B. which ... to be improved C. where. . . to be improving D. when.. . improving 3.Remember_________the magazine when you have finished reading it. A. putting back B. having put back
高中动词不定式用法讲解及练习
Grammar Presentation---动词不定式 一、不定式的句法功能 ●不定式作主语 ?To learn a foreign language is not easy.学习外语不是一件容易的事。 ◎不定式短语作主语时，常用it作形式主语来代替它的位置，而将真正的主语（不定式短语）移到谓语之后 ?It’s a great honor to be invited to Mary’s birthday party.很荣幸被邀请参加玛丽的生日聚会。 ●不定式作宾语 ◎作动词宾语 ◇下列动词常接不定式作宾语，如：agree, arrange, ask, beg, choose, dare, decide, demand,expect, fail, fear, hope, manage, offer, plan, prepare, pretend, promise, ?They hope to find new resources for mankind.他们希望为人类找到新资源。 ◇如果不定式作宾语且有自己的补语，常用“it”作形式宾语，而把真正的宾语放在后面。 下列动词常用it作形式宾语，如：believe, consider, feel, find, know, make ?I know it impossible to finish so much homework in one day. 我知道在一天中完成这么多的作业是不可能的。 ●不定式作表语 ◎不定式作表语时，一般紧跟在系动词后，说明主语的内容 ?The first step is to check the victim’s breathing. 第一步是检查受害人的呼吸。 ●不定式作补语 ?I’d like the problem to be discussed at the next meeting.我希望这个问题在下一次会上讨论。 ●不定式作定语 ?The students have a lot of homework to do every day.学生们每天都有很多家庭作业要做。 ●不定式作状语 不定式可以作原因状语、结果状语、目的状语以及方式状语 不定式在下列句式中作目的状语：so as to do, in order to do ?In order to ensure your hair looks its best, pay attention to what you eat. 为了保证你的头发是最佳状态，请注意你的饮食。 二：不定式考点归纳： 考点1：不定式的时态和语态： 1.---Is Bob still performing? ---I’m afraid not. He is said ____the stage already as he has become an official. A. to have left B. to leave C. to have been left D. to be left 2.The news reporters hurried to the airport, only ____ the film stars had left. A. to tell B. to be told C. telling D. told 1．A. 根据句子的意思“据说他已经离开了舞台”，要用不定式的完成式的主动形式。2．B. 用动词的不定式的被动形式表示结果状语。 考点2：不定式的功能：不定式具有名词的特征，可以作主语或宾语（例5），具有形容词的特征，可以作表语、定语或补足语（例4）；具有副词的特征，在句子中可以作状语（例3）。
动词不定式的精讲与专项练习
动词不定式（The Infinitive） 一、概述 不定式是动词的一种非谓语形式，在句中不能单独作谓语。它有两种形式：（1）带to的不定式；（2）不带to的不定式（即通常所说的动词原形），它可以和助动词或情态动词构成谓语。不定式既有动词性质，又有名词性质。 1）不等式具有动词性质，即它有时态和语态的变化；可有自己的宾语或状语并构成不等式短语。如： Would you like to tell me an interesting story? 你可不可以给我讲一个有趣的故事？（不等式to tell有自己的宾语me和story）He was too clever a man to be fooled.他这个人很机灵，不会被愚弄的。（不等式的被动语态） I’m going to go there by bike. 我想骑自行车去那儿。（不定式有状语there） They will set up more primary schools in the countryside. 他们将在乡村修建更多的小学。（不带to的不等式与助动词will一起构成谓语）但是，不等式没有人称和数的变化，即不受人称和单数、复数的限定或影响。 She likes to play the accordion. 她喜欢弹奏手风琴。 She liked to play the accordion when she was young. 她很小就喜欢弹奏手风琴。 2）不等式具有名词性质，即它在句中可用作主语、宾语、表语等。如： To see is to believe. 百闻不如一见。（作主语） This suit doesn’t seem to fit me.这件衣服似乎不适合我穿。（作表语） She wanted to see which shops offered the best service. 她想看看哪家商店提供最好的服务。（作宾语） There’s no need to be worried. 不需要担心。（作定语） He went there to see what would happen.他去那儿是想看看会出什么事。（作状语） 3）不等式虽然在语法上不能有主语，但它表示的动作，在意思上是可以有自己的主语，在语法上这个主语称为不等式的逻辑主语。这个逻辑主语可能是整个句子的主语、宾语等，也可以用一个由for引起的短语表示。如： His friends tried to encourage him. 他的朋友设法鼓励他。（不等式的逻辑主语His friends同时也是句子的主语） Every year, tobacco companies must persuade new people to start smoking cigarettes. 每年烟草公司要设法使一些比吸烟的人开始吸烟。（不等式的逻辑主语new people是句子的宾语）It’s very difficult for a foreigner to learn Chines e. 外国人学汉语是很不容易的。（不等式的逻辑主语由for引起的短语表示） 另外，不等式的否定形式一般在它的前面直接加not或never。 The teacher has told me many times not to come late again.老师多次告诉我不要再来晚了。 She seems not to have a bright time with her new friends.和新朋友在一起她似乎过得不是太好。 二、不定式的主要用法 动词不等式具有名词、形容词及副词的特征，因此在句中可作主语、宾语、宾语（或主语）补足语、表语、定语、及状语等。 1、不定式作主语 ①不等式作主语时，谓语动词用单数形式。 To conquer English is not easy. 征服英语不容易。 To make plan firs t is a good idea. 先制定计划是个好主意。 To know everything is to know nothing. 事事皆通，无一精通。 ②不等式作主语时，常常用形式主语it替代，而将真正的主语不等式放在句子的后面。 It is necessary to master a foreign language.掌握一门外语很有必要。 It’s a great pleasure to see you again.再次见到你真高兴。 It is a bad manner to stare at a foreign guest.盯着外宾看是一种不良的举动。 ③如果说明不等式表示的动作是谁做的，可以在不等式的前面加一个for引起的短语，这就是常见的“It is adj./n. for sb. to do sth.”句式。如： It is good manners for an Arab to stand close to his friends when they are talking. 对阿拉伯人来说，交谈时站得离朋友近些是好的礼貌。 It is a great honor for us to be presented at the party.我们能来参加晚会，深感荣幸。 It will be a regret for us not to help him. 我们没有帮助他是个遗憾。 ④在某些形容词（如kind, good, nice, wise, unwise, clever, silly, wrong, right, foolish, stupid, careless, considerate, rude, naughty, impolite等）作表语时，不等式前常加一个以of引起的短语，来说明不等式指的是谁的情况。这就是常见的 “It is adj. of sb to do sth.”句式。如：
动词不定式讲解
非谓语动词 一、英语句子需要遵循一个总原则：一个句子只能有一个动词。当一个句子必须要出现两个或两个以上的动词才能完整 表达一个意思时，为了不违法总原则，英语有四种处理方式： 1. 切分成两个或者多个句子 She is a girl. She likes English 2. 将一个谓语动词做主句，其余动词改成从句 She is the girl who likes singing. 3. 添加and, but, or, when, because, not only..but also, either..or 等连词变成并列结构 She got off the bus, but left her handbag on her seat. 4. 将其中一个动词变成非谓语动词形式 She got off the bus, leaving her handbag on her seat. 二、非谓语动词使用条件：一个句子当中，已经存在一个主句（谓语动词），又没有连词(and,but,or等)的情况下， 还有别的动词出现时，这时就要用非谓语动词 三、非谓语除了不能做谓语外，其他成分都可以做 不定式（to do） 四、非谓语动词三种形式分词现在分词（doing） 过去分词( done ) 动名词(doing) 五、非谓语动词解题技巧： 1. 判断是不是用非谓语动词（1.看有没有逗号 2.看有没有谓语 3.看有没有连词。要牢记英语中逗号不能连接两个 句子，一个句子如果没有连词只能有一个谓语） 2. 判断是主语和动词是主动还是被动关系 3. 判断时间, 确定非谓语动词和主句动词谁先发生，谁后发生 不定式的用法 不定式构成一般式完成式进行式 主动关系to do to have done to be doing 被动关系to be done to have been done 不定式动词和谓语动词发生的时间关系不定式的动作和谓语动作同时发生， 或发生谓语动作之后 he seems to know a lot 不定式的动作发生在谓语动 作之前 I regretted to have told you a lie. 不定式的动作和谓语 动作同时发生 I’m glad to be talking with you 不定式否定形式在to前加not. 即not to..... 不定式充当的成分主语，宾语，表语，定语，状语，宾补
动词不定式用法讲解
动词不定式用法讲解 1、构成及特征 动词不定式(infinitive)是动词的一种非限定形式，即非谓语动词形式，它有两种形式：一种是“to + 动词原形”构成（to- infinitive）；另一种是不带to的不定式,即动词原形(bare- infinitive)。所有行为动词都有不定式形式，其否定式是在不定式前加not。动词不定式（或不定式短语）没有人称和数的变化，在句子中不能作谓语。动词不定式仍保留有动词的特点：（1）可以有时式和语态的变化，也可以有自己的宾语或状语，它们一起构成了不定式短语。He tried to work out the problem in five minutes.他试图在五分钟之内算出这道题。（带宾语和状语） The factory to be built here next year is a car factory.明年在这里建的工厂是一家汽车制造厂。（有语态的变化） （2）动词不定式还具有名词、形容词和副词的特征，在句中可以作主语、宾语、表语、补语、定语、状语等成分。 He wants to study English.他想学英语。（to study English在句中作want的宾语，而to study又有自己的宾语English, to study和English一起构成了不定式短语。）Never to offend anyone is his principle.不得罪人是他的原则。（不定式作主语） 注意：不定式在许多场合具有情态意义。作主语时，相当于一个带有情态动词的主语从句；作宾语时，相当于一个带有情态动词的宾语从句；作定语时，相当于一个带有情态动词的定语从句；作目的状语时，相当于so that 或in order that引导的目的状语从句。 It is right for her to say so.(= It is right that she should say so.)她这样说是对的。 He has a lot of work to do.(=…that he should do)他有很多工作要做。 I don’t know where to get the ticket.(= …where I could get the ticket.)我不知道哪
动词不定式专项练习
动词不定式专项练习 根据句意及所给的汉语提示完成下列句子。 1．I've come____________________（借词典）． 2．I'm very sorry____________________（麻烦你）． 3．He is too frightened____________________（不能动）． 4．The teacher asked us____________________（用英语说它）． 5．I'd like____________________（吃苹果）． 6．The policeman told the boys____________________（别在公路上玩耍）．7．His uncle will teach him____________________（唱歌和跳舞）． 8．You'd better____________________（别在阳光下看书）． 9．We often watch them____________________（（踢足球）． 10．Let's____________________（去散步），shallwe？ 11．Later he left home____________________（找）that lost watch． 12．He found it very difficult____________________（入睡）． 13．Why not____________________（去划船）？ 14．She often helps her mother____________________（做家务）．15．When you leave the room，please don't forget____________________（关掉）the light． 动词不定式作坊答案： 1．to borrow the dictionary 2．to trouble you 3．to move 4．to say it in English 5．to eat apples 6．notto play on the road 7．to sing and dance 8．not read in the sun 9．play football 10．go for a walk 11．to look for 12．to get to sleep 13．go boating 14．（to）do the housework 15．to turn off
动词不定式讲解、专项练习及答案
初中英语语法（动词不定式） 1．不定式的基本形式与结构 动词不定式指通常由to加上动词原形(如to write) 所构成的一种非限定性动 词形式，但在有些情况下to可以省略。动词不定式有进行体和完成体(如上to be writing，to have written)，也有被动态(如to be written)，所有的主动词，不论是 及物动词还是不及物动词，也不论是动作动词还是状态动词，都有不定式形式。 助动词除be和have外，没有不定式形式。动词不定式在语法功能上可作主语、 宾语、表语、定语和状语。 2．不定式的用法 1)不定式结构作主语 1.Te get contact with his family in Taiwan made him extremely happy since they separated more than 40 years ago． 2.To finish that task in such a short time is really a challenge． 在上述情况下，如果不定式较长，显得头重脚轻，则可由代词让作形式主语(形式主语it不可由that或this等其他代词代替)，而将不定式放到后面。如： 1.It made him extremely happy to get contact with his family in Taiwan since they separated more than 40 years ago． 2.John admitted that it is always difficult for him to be on time． 不定式结构所表示的动作是谁做的，即不定式的逻辑主语，通常可以通过for sb. to do sth. 结构表达： 1.It is quite important for us to read good books during a general review． 2.It is not difficult fot those talented students to pass the exam. 在某些形容词(如careless，clever，considerate，foolish，good，impolite，kind，naughty，nice，silly，stupid等)作表语时，不定式后可以加of来引导出其逻辑主语： 1.It is very kind of you to tell me the truth． 2.It is stupid of him to do such a silly thing． 2)不定式作宾语 不定式作宾语有两种：一种是及物动词后直接跟带to的不定式，另一种是“及物动词+疑问词+带to的不定式。 及物动词+带to的不定式结构: 只能跟动词不定式的动词，常见的有: afford，agree，aim，appear，ask，believe，care，claim，decide demand，desire，determine，expect，fail，happen，hesitate，hope，intend，learn，long，manage，offer，pretend，promise，prepare，refuse，seek，swear，undertake，want，wish等。 1.He managed to solve the complicated problem. 2.The stranger offered to show me the way. 3.Mr. Smith undertook to build a new plant in South Africa. 动词+疑问代(副)词+不定式： 这类动词常见的有advise，decide，find out，forget，inquire，know，learn，
英语语法专项：动词不定式用法归纳及练习答案
---------------------------------------------------------------最新资料推荐------------------------------------------------------ 英语语法专项：动词不定式用法归纳及练习答案 动词不定式用法归纳动词不定式没有人称和数的变化，在句中不能独立作谓语。 但动词不定式具有名词、形容词和副词特征，在句中可以作主语、宾语、宾语补足语、定语、表语和状语等多种成分。 另外，动词不定式具有动词特点，可以有自己的宾语和状语，组成动词不定式短语。 动词不定式的肯定形式是 to＋do；其否定形式是 not to＋do。 1．作主语可以直接作主语。 如： To see is to believe．但在英语中，常用 it 作形式主语，真正的主语即动词不定式放在后面。 如： It's wrong to play tricks on other people． It's our duty to keep our environment clean and tidy．（Lesson 10）．点击规律：动词不定式在句中作主语时，常放在 It is ＋adj．（形容词）＋to do sth．或 It is ＋ n．（名词）＋to do sth．句型中，it 仅作形式主语。 2．作宾语 a.以下动词只能 to do 作宾语。 attempt 企图 enable 能够 neglect 忽视 afford 负担得起demand 要求 long 渴望 arrange 安排 mean 意欲，打算 begin 开始 expect 期望 appear 似乎，显得 determine 决定 manage 设法 cease 停止 hate 憎恨，厌恶 pretend 假装 ask 问 need 需要 1/ 7
动词不定式用法讲解
动词不定式用法小结 动词不定式用法小结 动词不定式是一种非谓语动词形式，其结构为“to＋动词原形”，其中to不是介词，而是动词不定式的符号，称为小品词，动词不定式没有人称和数的变化。动词不定式和其后面的名词等构成不定式短语，在句子中可以用作主语、表语、宾语、补足语、定语、状语等。 一. 作主语例如： To be a doctor is hard. 做医生很难。 To learn English well is not easy. 学好英语不容易。 动词不定式（短语）作主语时，为了避免句子的头重脚轻，可以用“it”作形式主语，而把真正的主语－－动词不定式（短语）放在句子的后部。例如上面的句子可以表示为： It is hard to be a doctor. It is not easy to learn English well. 再如： It’s important to plant trees in spring. 如果动词不定式的动作是谁做的，可以在动词不定式前面加一个由介词for 引导的短语，称为不定式的复合结构。例： It’s good for us to read English aloud in the morning. 对我们来说每天早晨大声读英语是很有益的。 It is important for students to use English every day. 对学生来说每天使用英语是很重要的。 二. 作表语： 动词不定式（短语）作表语常用于系词be的后面。例： His work is to drive a car. 他的工作是开车。 My job is to feed animals. 我的工作是饲养动物。 Her ambition is to be a doctor. 她的理想是当医生。 三. 作宾语 动词不定式（短语）可以放在一些动词后面用作宾语，能以动词不定式作宾语的动词有：begin,start, want, forget, remember, show, learn, like, hate, love, ask等。例： I want to tell you a story. 我想给你讲个故事。 They begin to work at eight every morning. 他们每天早晨8点开始工作。 Don’t forget to lock the door. 别忘了锁门。 Would you like to go and have a picnic with us tomorrow? 明天和我们一起去野餐好吗？
动词不定式讲解
动词不定式的用法 概念： 动词不定式由to+动词原形构成。这里的to是不定式标志，没有词义。不定式具有名词、形容词或副词的某些语法功能，又有动词的时态和语态的特点及作用。可以做主语、宾语、宾语补足语、表语、定语、状语。 一、作主语 动词不定式作主语时，句子的谓语动词常用单数，其位置有以下两种： (1)把不定式置于句首。如： To get there by bike will take us half an hour. (2)用it作形式主语，把真正的主语不定式置于句后，常用于下列句式中。如： ①It＋be＋名词＋to do It's our duty to take good care of the old. ②It takes sb+some time+to do How long did it take you to finish the work ③It＋be＋形容词＋for sb＋to do It is difficult for us to finish writing the composition in a quarter of an hour. 在句型③中，常用表示客观情况的形容词，如： easy, difficult, hard, important, possible, impossible, comfortable, necessary, better; the first, the next, the last, the best, too much, too little, not enough ④It＋be＋形容词＋of sb＋to do It is stupid of you to write down everything the teacher says. 在句型④中，常用 careless,clever,good,foolish,honest,kind,lazy,nice,right,silly,stupid,wise rude, clever, foolish, thoughtful, thoughtless（欠考虑的；不考虑的）, brave, considerate(考虑周到的), selfish(自私的)等表示赞扬或批评的词。在不定式前的sb，可看作其逻辑主语。这一句式有时相当于Sb is＋形容词＋to do句式，如：It's kind of you to help me with my English.=You are kind to help me with my English. ⑤It seems(appears)＋形容词＋to do It seemed impossible to save money. It seemed selfish of him not to give them anything. 他不给他们任何东西，这显得太自私了。 注意：1) 其他系动词如，look，appear等也可用于此句型 2) 不定式作为句子主语时，动词用单数形式。 3) 当不定式作主语的句子中又有一个不定式作表语时，不能用It is… to…的句 型 对应性：To see is to believe. 百闻不如一见。 二、作宾语 1) 以下动词后，只能跟不定式作宾语 afford （付得起），agree（同意），aim(力求做到), appear（显得），arrange（安排），ask（要求），attempt （试图），care（想要），choose（决定），claim（声称），condescend （屈尊），consent（准许），decide（决定），demand（要求），determine（决心），endeavor （竭力），expect（期待），fail（未履行），help（帮助），hesitate（犹豫），hope（希望），learn（学会），manage（设法），neglect（疏忽），offer（主动提出），plan（计划），prepare （准备），pretend（假装），proceed（接着做），promise（答应），prove（证明），refuse （拒绝），resolve（解决），seem（觉得好像），swear（发誓），tend（往往会），threaten （威胁），undertake（承诺），volunteer（自愿做），vow（发誓），want（想要），wish（希
动词不定式专项练习及答案
语法动词不定式专项练习 基础题： 1. He told her ______ there at once. A. get B. gets C. should get D. to get 2. It ______ me two hours to find your new house. A. cost B. took C. spent D. used 3. ---- I didn't hear you come in last night. ---- That's good. We tried_____ noisy. A. not be B. not to be C. to be not D. to not be 4. She reached the top of the hill and stopped____on a big rock by the side of the path. A. to have rested B. resting C. to rest D. rest 5. “The light in the office is still on.” “oh, I forgot____.” A. turning it off B. turn it off C. to turn it off D. having turned it off 6. I remembered___ the English novel at home yesterday forgetting_____ it to the library. A. leaving; to return B. to leave; return C. leaving; returning D. to leave; to return 7. I really don't know ____ . A. to swim B. how to swim C. to swim how D. how swim 8.The children all turned ____ the famous actress as she entered the classroom. A. looked at B. to look at C. to looking at D. look at 拓展题： 9. ______ the project in time, the staff were working at weekends. A. Competing B. Having completed C. To have completed D. To complete 10. _____ , you need to give all you have and try your best. A. Being a winner B. To be a winner C. Be a winner D. Having been a winner 11.With the world changing fast, we have something new _______with all by ourselves every day. A. deal B. dealt C. to deal D. dealing 12. Last summer I took a lesson on_____. A. how to make dresses B. how dresses be made C. how to be made dresses D. how dresses to be made 13. She pretended_____ me when I passed by. A. not to see B. not seeing C. to not see D. having not seen 14. Tom kept quiet about the accident_____ lose his job. A. so not as to B. so as not to