His failure suggested that he the teacher’s suggestions．A．can’t have followedB
题型：不详难度：来源：
His failure suggested that he the teacher’s suggestions．| A．can’t have followed | B．needn’t follow | | C．mustn’t have followed | D．shouldn’t follow |
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答案
| A |
解析
试题分析：句意：他的失败表明了他不可能听了老师的建议。can’t have done不可能做了某事；must表推测不能用于否定句；因为现在已经失败，所以这是对过去的推测，过去没有听从老师的建议。故选A。
点评：本题难度适中。情态动词的完成式是高中阶段的重难点之一，需要考生熟记它们的用法，在各类考试中经常出现，它主要用于表示对过去情况进行推测或责备等。
即学即练：—Can I have something to eat, Mum? I feel hungry.
You ________ be hungry. You’ve just had some bread and hamburger.
A. mayn’t B. won’t C. mustn’t D. can’t
解析：D。否定意义的推测用can或者could来代替must,表示强烈语气。 |
举一反三
--- The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
---____ my students have a try?| A．Shall | B．Must | C．Will | D．May |
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| we go to the McDonald’s? I’m sick of the food there! |
It is recommended that the project ________ not be started until all the preparations have been made.| A．must | B．can | C．need | D．should |
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－Why are you looking so worried? Is there anything I can do for you?
－The computer break down when I nearly finished my composition.| A．can | B．should | C．must | D．dare |
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I told Sally how to get there, but perhaps I ________ for her.| A．had to write it out | | B．must have written it out | | C．should have written it out | | D．need to have written it out |
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