she must live near here, for she comes to work on foot. she was absent from class. there must have been something wrong with her. the light was out. they must have gone to bed. mary’s score on the test is the highest in her class. she ___ have stu...
A. needn't have done B. must not have done C. shouldn't have done D. can not have done 10、The weather turned out to be fine yesterday. I ___ the trouble to carry my umbrella with me. A. should have taken B. could have taken C. needn't have taken D...
现在完成时(have/has done) ①表示动作到现在为止已经完成或刚刚完成,强调对现在产生的影响。 例:I bought a new house, but I haven t sold my old one yet, so at the moment I have two houses. 我买了一所新房子,但是还没有卖掉旧的,所以现在我又两所房子。
更多内容请点击：2016年12月大学英语六级语法:must 用法