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1、 语法专题四：时态语法专题四：时态1. 现在时现在时(Present tenses)时态时态结构与用法结构与用法结构：结构：do/does/be(am/is/are)一般现在时一般现在时用法：用法：1. 表示现在的习惯动作、状态。2. 表示客观规律、真理；特征、性格等。3. 用于标题，小说、剧本、图片等中的情节介绍。4. 用于时间、条件、让步状从中，表将来。5. 表示按计划、规定的时间发生的动作，如时刻表等。结构：结构：be(am/is/are) doing; 或 be + adv. / prep. (如：in, on, under 等)现在进行时现在进行时用法：用法：1. 表示现在、现阶段正
2、在发生、进行的动作。2. 常与 go, leave, come, arrive, stay, move 等连用，表示将来的动作。3. 与 always, forever 等连用，表示动作的反复，含厌倦或赞赏的意思。注意：注意：1. 表示感觉、心理、结果性的动词一般不用于进行时。2. 常见表进行的副词、介短：in progress in operation on show结构：结构：have/has done现在完成时现在完成时用法：用法：1. 过去发生且结束，但对现在造成影响。 2. 过去发生且持续到现在。 3. 在以下两个句型中，其从句要求用现在完成时：It (This) is the fi
3、rst (last, second, third,) time thatIt (This) is the best (worst, most interesting,) + n. + that结构：结构：have/has been doing完成进行时完成进行时用法：用法：过去发生，目前还在进行，且可能持续下去，强调动作的延续性。巩固练习：巩固练习： 1. Ive won a holiday for two days to Florida. I my mum. A. am taking B. have taken C. take D. will have taken 2. Because fa
4、rmland _quickly, the government is considering solving the problem. A. is being lost B. is lost C. is losing D. loses 3. John and I _ friends for 8 years. We first got to know each other at a party. But we_ each other a couple of times before that.A. had been; have been B. have been; have beenC. had
5、 been; had seen D. have been; had seen 4. Dad will come to see me when I _ the training course.A. will have finished B. will finish C. are finishing D. finish 5. -Did he notice you enter the room?-I dont think so. He _ to the radio with his eyes shut.A. listened B. was listening C. has listened D. h
6、ad listened 6. We _ our new neighbors yet, so we dont know their names.A. dont meet B. wont meet C. havent met D. hadnt met 7. I have to go to work by taxi because my car _ at the garage.A. will be repaired B. is repaired C. is being repaired D. be repaired 8. -_ leave at the end of the month.-I don
7、t think you should do that until _ another job.A. Im going to; youd found B. Im going to; youve foundC. Ill; youll find D. Ill; youd find 9. I wont tell the student the answer to the math problem until he _ on it for an hour.A. has been working B. will have worked C. will have been working D. had wo
8、rked 10. The father as well as his three children _ skating on the frozen river every Sunday afternoon in winter. A. is going B. go C. goes D. are going 11. I _ in London for many years, but Ive never regretted my final decision to move back to China. A. lived B. was living C. have lived D. had live
9、d 12. This machine _. It hasnt worked for years.A. didnt work B. wasnt working C. doesnt work D. isnt working 13. My friend, who _ on the IOC all his life, is retiring next month.A. served B. is serving C. had served D. has served 14. Look at the timetable. Hurry up! Flight 4026_ off at 18:20.A. tak
10、es B. took C. will be taken D. has taken 15. -I dont suppose the police know who did it.-Well, surprisingly they do. A man has been arrested and _ now.A. has been questioned B. is being questionedC. is questioning D. has questioned 16. So far it is the best crosstalk I _.A. heard B. have heard C. wi
11、ll hear D. had heard 17. -I will come to attend your lecture at 10:00 tomorrow.-Im sorry, but by then my lecture will have ended and I _ my guests in my office. A. is being met B. will meet C. will be meeting D. will have met 18. -Hi, Tracy, you look tired. -I am tired. I _ the living room all day.A
12、. painted B. had painted C. have been painting D. have painted 19. With the development of science, more new technology _ to the field of IT. A. has introduced B. is being introduced C. is introduced D. was introduced 20. The two friends _ on line for three hours, and they will go on.A. had been cha
13、tting B. had chatted C. were chatting D. ha ve been chatting 21. -Lets see if the baseball game has started yet.-Started? It must be clear who _ by now.A. is winning B. wins C. has won D. would win 22. -Whats the matter, Jane? You look sad.-Oh, nothing much. As a matter of fact, I _ of my friends ba
14、ck home.A. was just thinking B. just thought C. have just been thinking D. have just thought 23. He will have learned English for 8 years by the time he _ from university.A. will graduate B. will have graduated C. graduates D. is to graduate 24. There was a knock at the door. It was the second time that someone _ me that evening. A. to have interrupted B. would have interrupted C. had interrupted D. to interrupt 25. - Do you know our town at all? - No, this is the first
