—Why did you leave without a word of warning to John?
—But what _____ otherwise? He never listens to me.


  1. A.
    could I have done
  2. B.
    would I do
  3. C.
    must I have done
  4. D.
    should I do
A
試題分析：句意：--為什么你沒(méi)有留下一句話就離開(kāi)了？--但是要不我能做什么？他也不聽(tīng)我的。根據(jù)第一句可知這里他的離開(kāi)發(fā)生在過(guò)去，故用情態(tài)動(dòng)詞+have done，所以排除BD；must have done不能用在疑問(wèn)句中，故選A。
考點(diǎn)：考查情態(tài)動(dòng)詞的用法。
點(diǎn)評(píng)：本題難度適中。情態(tài)動(dòng)詞的完成式是高中階段的重難點(diǎn)之一，需要考生熟記它們的用法，在各類考試中經(jīng)常出現(xiàn)，它主要用于表示對(duì)過(guò)去情況進(jìn)行推測(cè)或責(zé)備等。
即學(xué)即練：  --- There were already five people in the car but they managed to take me as well.
--- It ___ a comfortable journey.
A. can’t be     B. shouldn’t be   C. mustn’t have been  D. couldn’t have been
解析：D。They were already five people in the car, but they managed to take me as well.一句中的時(shí)態(tài)，應(yīng)該是對(duì)過(guò)去情況的推測(cè)判斷，因?yàn)檐嚿弦呀?jīng)有5位人了，在帶上我一個(gè)，可以斷定這一定是一次不舒適的旅行。所以，本句表達(dá)的是對(duì)過(guò)去否定的推測(cè)判斷，應(yīng)該用can’t/ could have done來(lái)表達(dá)。故答案選D。
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