2016年江西成考专升本英语考试复习笔记18(2)

来源：: 江西成考网
发布日期: 2017年04月19日

摘要：　　有些情态动词，如can， could， may， might， must， ought to， should 后面可以接动词的完成形式，表示对已经发生的事的猜测或对应该发生的事的看法。　　They shouldn’t have left so soon. 　　They must have been through a lot. 　　I needn’t have told them that. 　　He can’t have left for Shangha

表示“本来是能够……的（实际上未）”；

　　“should/ought to + 现在完成时”表示“本应该……（实际上未）”。

　　1、That was in March. You may / might have read about it in the newspapers.

　　2、The house is dark； the Browns _______ to bed.

　　A. may go B. should go C. should have gone D. must have gone

　　（答案 D）

　　3、Her husband could have helped her， but he chose not to.（choose）

　　4、You _______ yesterday if you were really serious about the job.

　　A.ought to come B. ought come C. ought to have come D. ought have come

　　（答案 C serious 严肃的）

　　此外，考生还应注意need和dare这两个词，它除了是情态动词外，还可以是实义动词，在不同的情况下用法有差别

　　1、To travel from England to Scotland you _______ a passport.

　　A. mustn’t have B. haven’t got C. don’t need D. needn’t

　　（情态动词后要接动词原型答案 C）

　　2、The house needs ________， but they plan to wait until next spring to do it.

　　A. paint B. to paint C. painting D. be painted

　　（答案 C）

　　1、“Do you have to leave？”

　　“Sorry ， but I really _____.&rdquo