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非谓语动词(4)

时间:2018-10-11 21:25来源:未知 作者:billgxl 点击:
完成时:表示的动作发生在谓语动词表示的动作之前。如: Im sorry to have given you so much trouble. He seems to have caught a cold. 进行时:表示动作正在进行,与谓语动词表示的动作同时发生。如: He seems

  1. 完成时:表示的动作发生在谓语动词表示的动作之前。如:
I’m sorry to have given you so much trouble.
He seems to have caught a cold.
  1. 进行时:表示动作正在进行,与谓语动词表示的动作同时发生。如:
He seems to be eating something.
  1. 完成进行时:表示动作从过去某个时间开始,一直延续到现在,并有可能持续下去。如:
She is known to have been working on the problem for many years.
  1. 不定式的语态
当不定式的逻辑主语是其动作的承受者时,就用被动式。如:
He was seen to enter the hall.      He asked to be sent to work in Tibet.
  • 省to 的动词不定式
  1. 情态动词(除ought 外,ought to)
  2. Would rather, had better.
  3. 感官动词 see, watch, look at, notice, observe, hear, listen to, smell, feel 等后作宾补,省略 to.
注意:在被动语态中 to 不能省略掉。如:
I saw him dance.     He was seen to dance.      The boss made them work the whole night.
They were made to work the whole night.
  1. 使役动词 let, have, make.
  2. 由 and, or 和 than 连接的两个不定式,第二个 to 可以省去。如:He wants to move to France and marry the girl.
  3. Help 可带 to ,也可不带to, help sb. (to) do sth.
  4. Why…/Why not…
  5. But 和 except 前是动词 do 时,后面出现的动词用不带 to 的动词不定式。试比较:                      He wants to do nothing but go out.  
  He wants to believe anything but to take the medicine.
  1. 通常在discover, imagine, suppose, think, understand 等词后,可以省去 to be .如:
He is supposed (to be) nice.  他应该是个好人。
——I usually go there by train.
——Why not ______ by boat for a change?
A  to try going       B  trying to go         C  to try and go        D  try going
Paul doesn’t have to be made ______ . He always works hard.
A  learn         B  to learn        C  learned        D  learning
四、     动词不定式的否定式。如:Tell him not to shut the window.    She pretended not to see me when I passed by.
        Mrs. Smith warned her daughter ______ after drinking.
        A  never to drive      B  to never drive      C  never driving     D  never drive (责任编辑:billgxl)
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