不定式的进行式表示正 在进行的动作,和谓语动 词所表示的动作同时进
行。 。
1. I am very glad to be working with
you.
2.He pretended
to
be
reading
when his
mother came into his精r品oPPTom.
动词不定式的时态
㈢.完成式（to have done)
1. I opened the door to enter the 2ro.oＩms.aw her enter the room.
3. Mr. Smith is going to attend the
meeting
to be held 精品PPT tomorrow.
动词不定式的时态
㈡.进行式( to be doing)
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不定式结构表示结果更常见于下列句型： ① so …as to …
Would you be so kind as to lend me
your bicycle / tell me the time? ② such (…) as to …
I’m not such a fool as to believe that. ③ enough to …
All I could do was send him a telegram.
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5.动词不定式作宾补 常跟动词不定式作宾补的动词有： （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
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4.动词不定式作表语 1．主语和表语都是不定式（其含义 往往一是条件，一是结果），如：
To be kind to the enemy is to be cruel to the people.
To do that would be to cut the foot to fit the shoe.
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 精品PPT
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.
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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。
I feel it my duty to help you. I once thought it impossible for us to finish the job in such a limited time.
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（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。
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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。
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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。
A. entering
B. enter
C. to enter
D. entered
解析：感官动词后可跟现在分词和省to的动词 不定式作宾补。不定式表示全过程，现在分词 表示正在进行。在被动语态中用带to的动词不 定式作主语补语。
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6. Wang Dong wanted to surf the Internet, but his father told him ___D_______.
Try to get there on time.
精品PPTforget todo 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.
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。
We are never too old to learn.
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动词不定式的时态
㈠. 一般式( to do ).
不定式的一般式所 表示的动作（状态） 同时（或几乎同时） 发生，或之后发生。
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3. We climbed to the top of the tower ___D_____a better view of the area.
A. getting
B. got
C. having got
D. to get
解析：动词不定式作目的状语，其余几个没 这功能。
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4. What is the way Smith thought of ___D______ enough money to buy the new house.
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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
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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.
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.
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2. 动词不定式作宾语 动词不定式作宾语常用于下列动词后：
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。
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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。
The boy is old enough to go to school. ④ too … to … 5.only to do表示一种意想不到的结果 Eg:We went to the train station only to
find that the train had精品lePPTft.
当too前有only时，only too …to…译 作肯定。
What I would suggest is to start work at once.
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注：在某些句型中，当主语部分有动作 动词do 时，作表语的不定式可以省略符 号 “to”，如：
All we have to do is push the button.
The only thing I can do now is go on by myself.
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2 ． 主 语 是 以 aim, duty, hope, idea, intention, mistake, plan, proposal, job, suggestion 等为中心词的名词词组，或以 what 引导的名词性从句表示，表语用不定 式说明其内容，如：
My idea is to climb the mountain from the north. My suggestion is to start work at once.
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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. Remember to post the letter for me when you go to the post office.