1. He was honest about it; he ______, but he didn’t.
A. could tell a lie B. might tell a lie
C. might have lain D. could have lied
2. He ______ be the top one in the class he has been absent for half a semester.
A. can’t B. mustn’t C. should not D. may not
3. ______ you ______ it again?
A. Do /dare to touching B. Dare /touch
C. Do /dare touching D. Dare /to touch
4. He ______ be proud of his son.
A. could well B. may well
C. must well D. should well
5. “He ______ come before five o’clock”, ordered the manager.
A. can B. may C. shall D. will
参考答案：
1. 答案：D 解析：would have done 是表示虚拟过去。把would 换成could 则有了情态动词“能”的意思，如：Tony did not leave at the appointed time but he could have started off on time.
2. 答案：A 解析：can 既可以表示“可能性”，也可以表示“能力”。根据句子意思，这里是前一个意思。再如：That can’t be a famous school, for nobody has ever heard of it./ They can’t do heavy work because they are too old.
3. 答案：B 解析：这里dare 作情态动词用，后面跟主要动词，如：Julia dare not put her hand on the tiger. (疑问句：Dare Julia put her hand on the tiger? 否定句：Julia dare not put her hand on the tiger.)
4. 答案：B 解析：may well 是习惯用法，表示“完全、确实”的意思，如：Susan might well change her plan yesterday. /You may well build a larger boat for sea voyage.
5. 答案：C 解析：shall 作情态动词用，可以表示“命令语气很强烈的必须”，如：According to the contract, you shall realize the advance payment one month after the start of the project. /He has said that shall never use the instrument again.
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