2020高考二轮复习英语语法知识难点梳理(7)

2020-02-05 13:16:08来源:新东方网

  为了帮助同学们备战2020高考英语,新东方在线高考频道整理了《2020高考二轮复习英语语法知识难点梳理(7)》,供同学们参考。

  动词不定式

  I.要点

  1、不定式的形式。以动词write为例。

式|语态

主动语态

被动语态

一般式

to write

to be written

完成式

to have written

to have been written

进行式

to be writing

完成进行式

to have been writing

  2、不定式的句法功能

  (1)作主语

  To hear from you is nice.

  To be a good teacher is not easy.

  不定式作主语时,为了保持句子的平衡,往往以it作形式主语,而不定式置于谓语动词后。如:

  It's nice to hear from you.

  It's not easy to be a good teacher.

  (2)作宾语

  通常用于want, hope, wish, like, need, hate, begin, start, remember, agree, learn, pretend, refuse, manage, help等词后。如:

  I forgot to lock the door.

  Please remember to write to me.

  (3)作表语

  My job is to pick up letters.

  He seemed to have heard nothing.

  (4)作定语

  不定式作定语时,须放在它所修饰的名词或代词后。如:

  I have two letters to write.

  I have a lot of work to do.

  (5)作宾补

  通常用于want, wish, ask, order, tell, know, help, advise, allow, cause, force等词后。如:

  He ordered her to leave at once.

  He was forced to obey his order.

  (6)作状语

  He got up early to catch the first bus.

  He worked hard to catch up with the other students.

  (7)作独立成分

  To tell you the truth, I told a lie.

  (8)"疑问词+不定式"结构。如:

  I don't know how to choose them.

  I cannot decide where to go.

  (9)不定式的否定式。如:

  I decided not to go.

  (10)不定式的完成式。如:

  He seemed to have cleaned the room before I came in.

  The boy is said to have been sent to the hospital last week.

  (11)too…to 结构。如:

  He was too excited to go to sleep.

  He was only too glad to go. (他太高兴了,乐意去)

  (12)主动表被动。如:

  The book is easy to read.

  I have a book to read.

  II.例题

  例1I haven't got a chair ____.

  A to sit B for to sit on C to sit on D for sitting

  解析:该题选C。不定式to sit on在句中作定语,修饰名词chair. 因为不定式和它所修饰的名词间是"动宾关系",所以不定式必须是及物动词,故此处on不能省略。

  例2 He was made ____.

  A go B gone C going D to go

  解析:该题选D。make sb. do sth. 如果是被动形式,不定式do前的to不能省略。

  例3 Anew factory is ____ very soon.

  A to be built B built

  C to build D to building

  解析:该题选A。is to be built意为"将要被建"。

预约体验高中一对一精华课

扫码关注回复【中小学】免费领取

领取中小学全科资料和五年高考真题

更多资料
更多>>
更多内容

小初高全科知识合集+暑假预习资料包

扫码下方二维码领取

更多>>
  • 07月23日-07月31日

    高三数学暑假班

    梳理三角形、立体几何等内容,总结常用做题方法

    价格 : ¥880元

    购买
更多课程>>
更多>>
更多资料