[動詞不定式]省去to 的動詞不定式

[動詞不定式]省去to 的動詞不定式,第1張

[動詞不定式]省去to 的動詞不定式,第2張

1) 情態動詞 ( 除ought 外) 後。

  2) 使役動詞 let, have, make後,感官動詞 see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等後。

  注意:被動語態中不能省去to.例如:

  I saw him dance. 我看見他跳舞。

  =He was seen to dance.

  The boss made them work the whole night. 老板讓他們整夜乾活。

  =They were made to work the whole night.

  3) would rather,had better句型後

  4) Why… / why no…句型後

  5) help 後可帶to,也可不帶to, help sb (to) do sth:

  6) but和except後。but前是實義動詞do時,後麪出現的不定式不帶to.

  比較:He wants to do nothing but go out. 他衹想出去玩。

  He wants to believe anything but to take the medicine. 除了喫這葯,他什麽都信。

  7) 由and, or和than連接的兩個不定式,第二個to 可以省去:

  8) 通常在discover, imagine, suppose, think等詞後作賓補時,可以省去to be.例如:

  He is supposed (to be) nice. 他應該是個好人。

  典型例題

  1) —— 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

  答案:D. why not 後麪接不帶to 的不定式,因此選D.

  2) Paul doesn't have to be made ___. He always works hard.

  A. learn  B. to learn  C. learned  D. learning

  答案:B. make後接不帶to 的動詞不定式,儅其用於被動時,to 不可省略。

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