[答案]D
23.(2011·江苏无锡高三期末)—Tom hasn't turned up yet. He might have got lost.
—No, he ________. His car has got a GPS.
A. must not have got lost
B. wouldn't have got lost
C. can't have got lost
D. shouldn't have got lost
[解析]本题考查 “情态动词+have done”。句意:—汤姆还没到这。他可能迷路了。—不,他不可能迷路。因为他的车上装有GPS定位系统。must 表推测时只用于肯定的陈述句,故A项予以排除;wouldn't have done“不会……”,只用于虚拟语气;can't have done“过去不可能干过”;shouldn't have done“本不应该干某事而事实上已经干了”;由句意可知C项正确。
[答案]C
24.(2011·山东济宁第一轮复习质量验收)—Where is Bob? I cannot find him anywhere.
—He ________ have been off long. I heard him make a call just now.
A. shouldn't
B. can't
C. mustn't
D. needn't
[解析]本题考查“情态动词+have done”。句意:—鲍勃哪里去了?我到处找不到他。—他不可能离开久了。我刚才还听见他打电话了。shouldn't have done“本不应该干某事(而事实上已干了)”;can't have done“不可能干过”;must 表推测不能用于否定句,故C项错误;needn't have done“本没有必要干某事(而事实上已干了)”;由语境可知B项正确。
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