选修七第一单元语法:动词不定式

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3 宾语
I want to go home. The workers demanded to get better pay. I found it necessary to talk to him again.
think/ consider/ find it + adj.+ to do
常接动词不定式作宾语的动词有: want, agree, afford, attempt, choose, dare, decide, demand, deserve, determine, fail, expect, get,hate, hesitate, hope, intend, manage, offer, plan, prepare, pretend, promise, refuse, seem, tend, wish。
Marty says…
7. Last year I invented…and a big company has decided to buy it from me.
8. I also have to do a lot of work, especially if I have been away for a while.
5. Sometimes, too, I was too weak to go to school so my education suffered.
6. My ambition is to work for a firm that develops computer software when I grow up.
(完成式表示动作发生在谓语动作之前)
(4).We’re happy to have been working with you.(完成进行式表示谓语动作发生之前,不定式的
动作一直在进行而且可能之后也继续)
三、用法
1. 作主语 2. 作表语 3. 作宾语 4. 作宾语补足语
5. 作定语 6. 作状语 7. 作插入语
He was made to do his work (by me).
(2) help 后面的“to”可省去
e.g. They often help the grandma (to) carry water.
(3) 不定式用在介词but, except, besides 后时,如果这些介词前有行为动词do的任何一种 形式,那么介词后的不定式不带to,相反则带to.
1. 主语
To see is to believe. It’s important to learn English well . •单个不定式作主语时,谓语动词用单数 •若不定式太长,往往用it作形式主语,不定式置后.
2. 表语
My job is to help the patient.
Your task is to clean the classroom.
(1.)使役动词:三使
make
(2.)感官动词
have
一感觉: feel
五看
二听
hear listen to
watch see look at notice
observe
注意 (1)在使役动词 let, make, have和感官动词feel; hear,
listen to; watch,see, notice, look at,observe等 后面,不定式作宾语补足语时要省“to” (注:被动 语态不能省to) e.g. I made him do his work.
9. Just accept them for who they are, and give them encouragement to live as rich and full a life as you do.
动词不定式
动词不定式是动词的一种非谓语形式。 由“to+动词原形”构成, 其否定形式是 “not/never to do” 不定式可以带宾 语或状语构成不定式短语,没有人称和数 的变化,但有时态和语态的变化。不定式 可以作主语、宾语、定语、状语、表语和 宾补,但不能单独作谓语。
2. I used to climb trees, swim and play football.
3. Then I started to get weaker and weaker.
Marty says…
4. Even after all that, no one could give my disease a name and it is difficult to know what the future holds.
一.结构 : to do (否定) not/never to do
二. 时态与语态 不定式 主动语态 被动语态
一般式
to do
to be done
进行式 完成式 完成进行式
to be doing ----------
to
have
done
to have done
been
to have doing
been
4. 宾补 引导不定式作宾补的动词:
warn, tell, allow, help, ask, force等 +sb to do sth
The teacher told me to clean the blackboard. I expect you to give me some help.
百度文库 let
----------
(1).They pretended not to see us.
(一般式表示与谓语的动作同时/几乎/发生在 它之后.)
(2). He pretended to be sleeping.
(在谓语动词发生的同时,不定式的动作也正在进行)
(3).She pretended to have known it before.
Grammar :The Infinitive 动词不定式
Marty says…
1. Unfortunately, the doctors don’t know how to make me better, but I am very outgoing and have learned to adapt to my disability.
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