动词不定式及其作用课件
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It is important to make a plan for our study.
It is impossible for me to finish the work in a week.
2. 动词不定式作宾语
动词不定式作宾语常用于下列及物动词后：
want, agree, decide, manage, wish, hope, ask, like, love , choose, promise, continue, plan, learn, expect, offer, prepare, refuse, pretend, attempt, intend, threaten, seek, hesitate, long, desire, fail等等。
The students stopped talking when the teacher came in.
go on to do sth.继续做另一件事
go on doing sth.接着做同一件事
After a short rest, they went on doing the work.
After finishing the homework, the students went out to play football.
动词不定式作宾语应注意的问题
1.有些动词后跟动词不定式和动名词作宾语意 义截然不同
try, go on, stop, mean, regret, remember, forget等
try to do sth. 尽力去做某事
try doing sth. 试一试，试试看
Try knocking at the back door if nobody hears you at the front door. Try to get there on time.
Remember to post the letter for me when you go to the post office.
stop to do sth.停下来去做某事（表目的） stop doing sth.停止做某事（作宾语）
I suggest we should stop to have a rest
We are never too old to learn.
动词不定式的时态和语态
1. 动词不定式的一般式（to do）用于表 示不定时所表示的动作与句子谓语动词 几乎同时发生火灾气候发生。
Ｉsaw her enter the room.
I have some important news to tell you.
I feel it my duty to help you.
I once thought it impossible for us e.
3.动词不定式作定语
动词不定式作定语，它与所修饰的名词或代 词可能是主谓关系，也可能是动宾关系。 He was the last one to leave school yesterday.
mean to do sth.打算做某事
mean doing sth.意味着做某事 I won’t wait if it means delaying a week. I meant to help you, but I was busy at that moment.
forget to do sth. 忘了去做某事
forget doing sth.忘了做过某事
I forget telling her about it I forget to bring the purse with me when I left home this morning.
remember to do sth.记住去做某事
remember doing sth.记得做过某事 I remember reading the story in some book.
His plan is to spend a few days in the countryside.
He appears to have caught cold.
当表语是动词不定式时，作主语的谓语动词也 只能是动词不定式，即主语和表语结构要一致 或对称。
To see is to believe
动词不定式
1. 作主语
2. 作宾语
1. 动词不定式的用法
3. 作定语 4. 作表语
5. 作宾补
6. 作状语
2.动词不定式的时态和语态
3. 巩固练习
1. 动词不定式作主语
动词不定式作主语，谓语动词用第三人称单数。 To get there by car will take a whole day. How to get enough money is still a question.
当主语部分有动词实义do的某个形式时，做表语 的动词不定式可以省略to。
The only thing we can do is wait till he comes back.
5.动词不定式作宾补
常要求跟动词不定式作宾语的动词有：
（1）可接带to的不定式作宾补的动词有：
ask, get, allow, forbid, prefer, force, inspire, advise, cause, tell, order, warn, teach, permit, wish, invite, encourage等
3. We climbed to the top of the tower ___D_____a better view of the area.
A. getting
B. got
C. having got
2. 动词不定式的进行式
动词不定式的进行式表示动作正在进行，和 句子谓语动词所表示的动作同时进行。
He pretended to be reading when his mother came into his room.
They are said to be building another bridge across the river
3. 动词不定式的完成式 动词不定式的完成式表示动作发生在谓语动 词所表示的动作前。 I am sorry to have kept you waiting so long.
I happened to have read the book before.
巩固练习
1. Several of these washes and dryers are out of order and__D____.
He wept to hear the news. (作原因状语）
I am glad to see you here. (作原因状语）
He hurried to the post office, only to find it closed. (结果状语）
The boy is too young to dress himself.（同上）
6.动词不定式作状语
动词不定式作状语用来修饰动词、形容词、 副词或整个句子，通常表示目的、原因、结 果、程度等。
I got up early in order to /so as to catch the first bus. (作目的状语）
To learn English well, you should practise it whenever possible. (作目的状语）
We have much homework to do everyday.
4.动词不定式作表语
动词不定式常放在系动词（be动词）后作表 语，有时也放在其他少数连系动词如： remain, seem, sound等后。
当表语是动词不定式时，作主语的谓语动词也 只能是动词不定式，即主语和表语结构要一致 或对称。
I have learned to drive the car.
He promised to come but he hasn’t turn up yet. He pretended to be reading when his mother came into his room.
The boys are longing to watch the World Cup.
think, consider, suppose, believe, imagine, find, prove等
We find him (to be )honest. I consider him (to be) my best friend. I suppose him (to be) about fifty.
2.— I wish you had brought your family with you.
— I’ll get them ___B____ next time.
A. coming
B. to come
C. come
D. have come
解析：使役动词get后跟带to的动词不定 式作宾补，let，make, have后跟省to的 动词不定式作宾补。
To make a plan for our study is very important.
1. 动词不定式作主语
有时候为了保持句子平衡，常用it作形式主语， 放到句首，而将作真实主语的动词不定式放 到句末。
It will take a whole day to get there by car.
A.need to be repairing B. repairing is required of them C. require that they be repaired. D. need to be repaired. 解析：and并列谓语动词， need to be repaired相当 于need repairing.
当too…to…结构中的不定式前有形容词 nervous, pleased, willing, happy, delighted, glad等时，to后面译作肯定。
They are too nervous to leave. 当too前有only时，only too …to…译作肯定。
I am only too pleased to help you. 当不定式前有表否定意义的词时，译作肯定。
You’d better get Tom to do it. She doesn’t allow me to use her computer. The teacher told him not to be late again. He invited us to attend his birthday party.
regret to do sth.遗憾地做某事
regret doing sth.后悔作了某事 I regret to say that you haven’t passed the exam. I regret having told him about it
动词不定式作宾语应注意的问题
2. 如果不定式作宾语而后面又有一个宾语 补足语，这时要用it作形式宾语而把这个 动词不定式放到补语后。
（2）可跟省to的动词不定式作宾补的动词有： 在部分感官动词和使役动词后，如：
see, watch, notice, observe, look at, listen to, feel, make, let, have 注：help后可跟省to或带to的不定式作宾补。
The teacher had us recite the text every day.
I was let to do the experiment alone.
Was he noticed to leave the house? 动词不定式在主动语态中用省to的形式作 宾补，但在被动语态的句子中，要用带to 的形式作主语补语。
（3）有的动词后可以跟to be形式作宾补，而 不是to do作宾补。如：
It is impossible for me to finish the work in a week.
2. 动词不定式作宾语
动词不定式作宾语常用于下列及物动词后：
want, agree, decide, manage, wish, hope, ask, like, love , choose, promise, continue, plan, learn, expect, offer, prepare, refuse, pretend, attempt, intend, threaten, seek, hesitate, long, desire, fail等等。
The students stopped talking when the teacher came in.
go on to do sth.继续做另一件事
go on doing sth.接着做同一件事
After a short rest, they went on doing the work.
After finishing the homework, the students went out to play football.
动词不定式作宾语应注意的问题
1.有些动词后跟动词不定式和动名词作宾语意 义截然不同
try, go on, stop, mean, regret, remember, forget等
try to do sth. 尽力去做某事
try doing sth. 试一试，试试看
Try knocking at the back door if nobody hears you at the front door. Try to get there on time.
Remember to post the letter for me when you go to the post office.
stop to do sth.停下来去做某事（表目的） stop doing sth.停止做某事（作宾语）
I suggest we should stop to have a rest
We are never too old to learn.
动词不定式的时态和语态
1. 动词不定式的一般式（to do）用于表 示不定时所表示的动作与句子谓语动词 几乎同时发生火灾气候发生。
Ｉsaw her enter the room.
I have some important news to tell you.
I feel it my duty to help you.
I once thought it impossible for us e.
3.动词不定式作定语
动词不定式作定语，它与所修饰的名词或代 词可能是主谓关系，也可能是动宾关系。 He was the last one to leave school yesterday.
mean to do sth.打算做某事
mean doing sth.意味着做某事 I won’t wait if it means delaying a week. I meant to help you, but I was busy at that moment.
forget to do sth. 忘了去做某事
forget doing sth.忘了做过某事
I forget telling her about it I forget to bring the purse with me when I left home this morning.
remember to do sth.记住去做某事
remember doing sth.记得做过某事 I remember reading the story in some book.
His plan is to spend a few days in the countryside.
He appears to have caught cold.
当表语是动词不定式时，作主语的谓语动词也 只能是动词不定式，即主语和表语结构要一致 或对称。
To see is to believe
动词不定式
1. 作主语
2. 作宾语
1. 动词不定式的用法
3. 作定语 4. 作表语
5. 作宾补
6. 作状语
2.动词不定式的时态和语态
3. 巩固练习
1. 动词不定式作主语
动词不定式作主语，谓语动词用第三人称单数。 To get there by car will take a whole day. How to get enough money is still a question.
当主语部分有动词实义do的某个形式时，做表语 的动词不定式可以省略to。
The only thing we can do is wait till he comes back.
5.动词不定式作宾补
常要求跟动词不定式作宾语的动词有：
（1）可接带to的不定式作宾补的动词有：
ask, get, allow, forbid, prefer, force, inspire, advise, cause, tell, order, warn, teach, permit, wish, invite, encourage等
3. We climbed to the top of the tower ___D_____a better view of the area.
A. getting
B. got
C. having got
2. 动词不定式的进行式
动词不定式的进行式表示动作正在进行，和 句子谓语动词所表示的动作同时进行。
He pretended to be reading when his mother came into his room.
They are said to be building another bridge across the river
3. 动词不定式的完成式 动词不定式的完成式表示动作发生在谓语动 词所表示的动作前。 I am sorry to have kept you waiting so long.
I happened to have read the book before.
巩固练习
1. Several of these washes and dryers are out of order and__D____.
He wept to hear the news. (作原因状语）
I am glad to see you here. (作原因状语）
He hurried to the post office, only to find it closed. (结果状语）
The boy is too young to dress himself.（同上）
6.动词不定式作状语
动词不定式作状语用来修饰动词、形容词、 副词或整个句子，通常表示目的、原因、结 果、程度等。
I got up early in order to /so as to catch the first bus. (作目的状语）
To learn English well, you should practise it whenever possible. (作目的状语）
We have much homework to do everyday.
4.动词不定式作表语
动词不定式常放在系动词（be动词）后作表 语，有时也放在其他少数连系动词如： remain, seem, sound等后。
当表语是动词不定式时，作主语的谓语动词也 只能是动词不定式，即主语和表语结构要一致 或对称。
I have learned to drive the car.
He promised to come but he hasn’t turn up yet. He pretended to be reading when his mother came into his room.
The boys are longing to watch the World Cup.
think, consider, suppose, believe, imagine, find, prove等
We find him (to be )honest. I consider him (to be) my best friend. I suppose him (to be) about fifty.
2.— I wish you had brought your family with you.
— I’ll get them ___B____ next time.
A. coming
B. to come
C. come
D. have come
解析：使役动词get后跟带to的动词不定 式作宾补，let，make, have后跟省to的 动词不定式作宾补。
To make a plan for our study is very important.
1. 动词不定式作主语
有时候为了保持句子平衡，常用it作形式主语， 放到句首，而将作真实主语的动词不定式放 到句末。
It will take a whole day to get there by car.
A.need to be repairing B. repairing is required of them C. require that they be repaired. D. need to be repaired. 解析：and并列谓语动词， need to be repaired相当 于need repairing.
当too…to…结构中的不定式前有形容词 nervous, pleased, willing, happy, delighted, glad等时，to后面译作肯定。
They are too nervous to leave. 当too前有only时，only too …to…译作肯定。
I am only too pleased to help you. 当不定式前有表否定意义的词时，译作肯定。
You’d better get Tom to do it. She doesn’t allow me to use her computer. The teacher told him not to be late again. He invited us to attend his birthday party.
regret to do sth.遗憾地做某事
regret doing sth.后悔作了某事 I regret to say that you haven’t passed the exam. I regret having told him about it
动词不定式作宾语应注意的问题
2. 如果不定式作宾语而后面又有一个宾语 补足语，这时要用it作形式宾语而把这个 动词不定式放到补语后。
（2）可跟省to的动词不定式作宾补的动词有： 在部分感官动词和使役动词后，如：
see, watch, notice, observe, look at, listen to, feel, make, let, have 注：help后可跟省to或带to的不定式作宾补。
The teacher had us recite the text every day.
I was let to do the experiment alone.
Was he noticed to leave the house? 动词不定式在主动语态中用省to的形式作 宾补，但在被动语态的句子中，要用带to 的形式作主语补语。
（3）有的动词后可以跟to be形式作宾补，而 不是to do作宾补。如：