His brother met him at the Great Theatre yesterday afternoon, so he ____ have at
题型：不详难度：来源：
His brother met him at the Great Theatre yesterday afternoon, so he ____ have attended your lecture. | A．couldn’t | B．needn’t | C．mustn’t | D．shouldn’t |
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答案
| A |
解析
试题分析：考查情态动词+have done的用法：can"t/ couldn"t have done 根本不可能... needn"t have done 本没必要,,,, must have done. 肯定已经.....(不要用mustn"t have done.....) shouldn"t have done 本不该......句意：昨天下午我妹妹在大剧院碰见了他，因此他肯定没有参加你的讲座。选A。
点评：Could have done sth本可以做某事；should have done本应该做某事，实际上却没有做；must have done一定做了某事。Might have done也许做某事。都是情态动词+have done的用法，平时要加强识记忆。 |
举一反三
She often shares her deepest thoughts and fears with friends through QQ, as if they______ chatting in her living room. | A．were | B．are | C．had been | D．has been |
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--Were you in time for the meeting?
-- If I _________earlier, I would have .| A．was told | B．had been told | C．were to be told | D．should be told |
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The command has just arrived that all employees ____________ in their proper uniforms before 7:00 pm.| A．will be dressed | B．must be dressed | | C．were dressed | D．be dressed |
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Emergency line operators _______ always stay calm and make sure that they get all the information they need to send help.| A．can | B．would | C．must | D．might |
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----My e-dictionary is nowhere to be found. Who ______ have taken it?
-----Keep looking and you will find it. ________ you have good luck! | A．should; Need | B．should; May | C．could; May | D．could; Need |
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