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Mr. Bush is on time for everything. How _____ it be that he was late for the opening ceremony?
A.canB.shouldC.mayD.must
A
考查情态动词表达推测。can通常用于否定或疑问句中表示推测,表示可能性。这句话的意思是“布什先生一直按时做好所有的事,他怎么可能开幕式迟到呢?”。用于否定句表示“不可能”,此时要与may not“可能不”的含义注意区分,如:
She may not tell lies. 她可能没撒谎。
He can’t have been to your home. He doesn’t know your address. 他不可能去过你家,他都不知道你们家的地址。
can用在肯定句中也有表示推测的意义,但表示理论上存在的可能性,翻译成“有时可能”(但很少发生),如:Even experienced teachers can make mistakes.
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