--- I did not see your elder brother at the lecture yesterday.
---You ______him, since he went to see Chinese Zodiac---Jackie Chan’s 100th movie.
A．mustn’t have seenB．couldn’t have seen
C．shouldn’t have seenD．needn’t have seen
B

試題分析：句意：--昨天在報告會上我沒有看見你的哥哥。--你不可能見他，因?yàn)樗タ闯升埖牡?00部電影中國的十二生肖。shouldn’t have done過去不應(yīng)做的而做了；needn’t have done過去沒必要做的而做了；couldn’t have done過去不可能做某事。must表推測時不能用在否定句，故選B。
點(diǎn)評：本題的難度適中。情態(tài)動詞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)，情態(tài)動詞的完成式主要用于表示對過去情況進(jìn)行推測或責(zé)備也是高考常考的內(nèi)容。這里考生容易誤選C。
即學(xué)即練：—I heard the phone ringing in the office next door.
—You ________ it. They haven’t got a phone yet.
A.couldn’t hear        B.couldn’t have heard
C.didn’t hear           D.wouldn’t have heard
解析：B。句意：由句意可知此處是對過去的事情表示推測，那么否定句用“can/could not+完成時”，故選B。
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