特黄特色三级在线观看免费,看黄色片子免费,色综合久,欧美在线视频看看,高潮胡言乱语对白刺激国产,伊人网成人,中文字幕亚洲一碰就硬老熟妇

8.2 forget doing/to do
?
  forget to do 忘記要去做某事!(未做)
  forget doing 忘記做過某事。  (已做)
  The light in the office is stil on. He forgot to turn it off.
  辦公室的燈還在亮著,它忘記關(guān)了。(沒有做關(guān)燈的動作)
  He forgot turning the light off.
  他忘記他已經(jīng)關(guān)了燈了。    ( 已做過關(guān)燈的動作)
  Don't forget to come tomorrow.
  別忘了明天來!        (to come動作未做)

典型例題
  ---- The light in the office is still on.
  ---- Oh,I forgot___.          
  A. turning it off  B. turn it off  C. to turn it off  D. having turned it off
  答案:C。由the light is still on 可知燈亮著,即關(guān)燈的動作沒有發(fā)生,因此用forget to do sth.
而forget doing sth表示燈已經(jīng)關(guān)上了,而自己忘記了這一事實。此處不符合題意。











 學(xué)習(xí)啦--英語語法大全