1、省略A.省略主、谓或宾-What do you think made John so upset?你人为什么使约翰如此难过？-(I think)Losing his wallet (made John so upset).他丢了钱包。B.状语从句中的主谓省略 在以 if、when、though 、unless、as、as if 等连词引导的从句中，如果从句的主语和主句的主语一致,而且从句中的谓语动词是 be，可以将状语从句中的主谓省略。When (he was ) walking in the street, he met a friend.他在街上走的时候，遇到了一位朋友。He will n
2、ot come unless (he is ) invited.除非邀请他才肯来。The research is so well designed that once(it is ) begun it can never be stopped.研究设计得如此好，一旦启动就无法停止。 如果从句主谓语是 it is 或 it was，可以省略主谓结构， if it is possible, when it is necessary 等都是这种结构。He ran as fast as (it was) possible.他拼命跑。If （it is ）necessary 有必要的话，加一个逗号。if
3、 convenient,注意：由 after, because, before 等词引导的状语从句一般要改写成介词短语等，用-ing 代替动词。Because he was ill he didnt attend the meeting.因为他病了，所以未出席会议。Because of being ill, he didnt attend the meeting.Because ill, he didnt attend the meeting.(误)C.在限制性定语从句中作状语的关系副词when、why、where 也可以省去。This is the very reason (why) I w
4、ant to kill you. 这就是我为何要杀死你的理由。This was the first time (when) I had visited Beijing.这是我第一次参观北京。D. 定语从句中做宾语的关系词可以省略 a. Do you remember the place (that / which) we visited last year? b. That is the naughty boy (whom / that) we talked about just now. c. I dont like the way (that /which) he explained to
5、 me. (比较 I dont like the way (in which / that) he speaks to us. 此句中关系词做状语 ) E. 省略 if 的虚拟条件句 (if 从句中含有 were / had / should,省略 if,把 were / had / should 提前 ) a. Were I you,I wouldnt do such a thing. b. Should the machine break down again,send it back to us. c. Had you worked harder,you would have passe
6、d the exam. F.在状语的独立分词结构中，分词往往可以省略The meeting (being)over, they walked out of the hall.会议结束了，他们走出了大厅。The work (having been) done, he left the office.做完工作后，他离开办公室。G.to 代替不定式to 代替不定式，常同 refuse, want, seem, intend, expect, hope, like, be afraid, prefer, care, oblige, forget, wish, try 等动词连用。-Would you
7、like to come to the party? -你愿意参加晚会吗？-Id like to (come to the party).-我愿意。-She didnt pass the test .-What a pity ! She should have (passed) .-Tom hasnt come back yet.-He ought to have ( come back).F.强调句的省略-Where did you buy the shirt ?-It was in the shop_ we met Tom 3 days ago _ I bought it .3.-Did
8、you work in the lab every afternoon? -No, but sometimes, I wish I _.A. had time to B. had time to do C. have time to D. have time5.Some students are going to China in summer vacation, and _.A.some are to America B. some going to America C. some to America D. some America8.The photographs of other pl
9、anets taken by satellite are clear than _.A. the earth B. those taken from the earth C. those of the earth D. of the earth10._ the road, dont forget to look both ways.A. As crossing B. While you cross C. While crossing D. Cross13.-Susan, go and join your sister cleaning the yard. - Why _? John is si
10、tting there doing nothing. A. him B. he C. I D. me14.-How do you find your missing pen? -_.A.Quite by accident B. I found it in my drawer. C. It writes well D. It was well kept by myself.15.-You must obey every word of mine. -_ I dont.?A. How if B. What if C. Such as D. Only if16.When _, the museum
11、will be open to the public next year.A. completed B. completing C. being completed D. to be completed17. The man we followed suddenly stopped and looked as if _ whether he was going in the right direction. A. seeing B. having seen C. to have seen D. to see19. -Does Bill do his new job well? -_ his o
12、ld job. I am afraid there is no hope for him.A. Not better than B. No better than C. Not so well as D. Not as well as21.The rent is expensive. Ive got half the space I had at home and Im paying _here.A. as three times much B. as much three times C. much as three times D. three times as much27. Unles
13、s_ to speak, you should remain silent at the conference. A. invited B. inviting C. being invited D. having invited28. Though_ money, his parents managed to send him to university. A. lacked B. lacking of C. lacking D. lacked in29. The research is so designed that once _nothing can be done to change
14、itbegins B having begun C. beginning D. begun 31. _, he doesnt want to go to school and keep in touch with the bad boys. A. As he is a student B. He is as student C. Student as he is D. As students he is34. I hate talking with that guy. Look, he is coming. What should I do? Dont speak until _. A. sp
15、eaking B. spoken to C. spoken D. speaking to 35. How are you getting on with your work? Oh, Im sorry. Things arent going so well as _.A. plans B. planning C. planned D. to plan36. He is only too ready to help others, seldom, _, refusing them when they turn to him.A. if never B. if ever C. if not D.
16、if any 37. While _ holding talks with President Hu Jintao, US President George W. Bush thanked China for its important role in the Six-Party Talks. A. he is B. he was C./ D. B or C 38. You should have thanked her before you left. I meant _, but when I was leaving I couldnt find her anywhere A. to th
17、ank B. to C. / D. thanking 39. When first _ to the market, these products enjoyed great success.A. introducing B. introduced C. introduce D. being introduced40. I wonder why you wont do it as _. Its the third time you have done so. A. told to B. be told C. told you D. you told 41. He is rather diffi
18、cult to make friends with, but his friendship, _ is more true than any other. A. once gained B. when to gain C. after is gained D. while gaining 42. You may take them all home _. A. if possible B. if can C. if impossible D. if you are possible 43. Water, _ enough, can change into vapor quickly A. wh
19、en heated B. while heating C. when to be heated D. when is heated 44. Should I look up each word that I dont understand? No, turn to your dictionary only when _.A. you are necessary B. you need C. necessary D. you are needed45. You seem to have lost your way. _? Im looking for Wangfujing Street. A. What for B. Need help C. Why so D. Where to 答案：1-5ABABC 6-10ADBBC 11-15CADCB 16-20ADBBA 21-25DCDCB 26-30DACDD 31-35CDABC 36-40CDBBA 41-45AAACB
