精品丰满熟女一区二区三区_五月天亚洲欧美综合网_亚洲青青青在线观看_国产一区二区精选

  • <menu id="29e66"></menu>

    <bdo id="29e66"><mark id="29e66"><legend id="29e66"></legend></mark></bdo>

  • <pre id="29e66"><tt id="29e66"><rt id="29e66"></rt></tt></pre>

      <label id="29e66"></label><address id="29e66"><mark id="29e66"><strike id="29e66"></strike></mark></address>
      8.2 forget doing/to do
      ?
        forget to do 忘記要去做某事!(未做)
        forget doing 忘記做過(guò)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(méi)有做關(guān)燈的動(dòng)作)
        He forgot turning the light off.
        他忘記他已經(jīng)關(guān)了燈了!   ( 已做過(guò)關(guān)燈的動(dòng)作)
        Don't forget to come tomorrow.
        別忘了明天來(lái)。         (to come動(dòng)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(dòng)作沒(méi)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(shí)。此處不符合題意。











       學(xué)習(xí)啦--英語(yǔ)語(yǔ)法大全