can/could have done
may/might have done
可能做了
可能做了
needn’t have done
不需要做但做了
1) You____ all those clothes! We have a washing machine to do that sort of thing. A) needn't have washed B) shouldn't have washed C) must not have washed D) can not have washed 2) John„s score on the test is the highest in the class， he____ last night. A) should study B) should have studied C) must have studied D) must have to study
9)“We didn't see him at the exhibition yesterday.” “He ___it.” A) mustn't visit B) can't have visited C) should have gone to see D) may see
10) Mary ____my letter, otherwise she would have replied before now. A) should have received B) has received C) couldn't have received D) ought to have received 11) I ____ you a valuable present for your birthday, but I was short of money. A) would have liked to give B) liked to give C) have liked to give D) would like to give
情态动词
can could may might must have to dare need shall should ought to will would had better
1.没有人称和数的变化 2.部分有过去式的变化 can could might
may
shall will have to dare
6) I am feeling sick. I____ so much chocolate. A) needn't have eaten B) couldn't have eaten C) mustn't have eaten D) shouldn't have eaten 7) I didn't send out my application form last week, but I ____. A) had B) would do C) should have D) might have to 8) She can speak quite fluent English. She____. A) must been in the U.S.A. for some time B) must have been in the U.S.A. for some time C) should have been in the U.S.A. for some time D) May be in the U.S.A. for some time
3) Nobody knows how people first came to these islands. They ____ from South America on rafts. A) must have sailed B) can sail C) might have sailed D) should have sailed 4) We____ the letter yesterday, but it didn't arrive. A) must receive B) ought to receive C) must have received D) ought to have received 5) With all the work on hand, he____ to the cinema last night. A) mustn„t go B) shouldn‟t have gone C) could not go D) couldn't have gone
12)“Where ____ my umbrella?”“Somebody ____ it away by mistake.” A) is, must have taken B) is, must take C) have been, must take D) is, takes
13) What ____ would happen if the director knew you felt that way? A) will you suppose B) you suppose C) do you suppose D) yuld
would
had to
dared
表请求: can,could,may,might,must 表允许: 表猜测:
can,could,may ,might
must,can,could,may,might
should,ought to,had better,must,have 表建议: to,shall,will,would
17) Tom ____ better than to ask Dick for help. A) shall know B) shouldn't know C) has known D) should have known
18) I know things are hard with you, but you ____try to get over the difficulties. A) can B) may C) must D) ought 19 I can't find the recorder in the room. It ____ by somebody. A) may have been taken away B) may leave C) may take away D) must have taken away 20) He ____the 9:20 train because he didn't leave home till 9:25. A) can reach B) could catch C) may not catch D) couldn't have caught
表意愿: will,would 表能力: can,could, be able to
既可以作为情态动词又可以做为实意动词：
敢于
dare need
需要
should /ought to have done
本该做(实际没有做)
should not/ ought not to have done本不该做(但做了) must have done can’t have done 一定做过 一定没有做
14) Two eyes ____see more than one. A) can B) may C) will D) should
15) ____ you continue in your efforts and achieve new and greater successes. A) Would B) Will C) May D) Should 16) We ought to help each other in our work, ____? A) oughtn't we B) should we C) shouldn't we D) ought to we