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1、Tom is looking for his key to his bike.He cant find it .He has lost his key to his bike.He lost it a short time ago and he still doesnt have it. He cant ride his bike to go to school.He looks worried.2.过去某一时间点发生的动作持续过去某一时间点发生的动作持续 到现在或到现在或还将持续下去。还将持续下去。1.过去某一时间点发生的动作对现在产生影响。过去某一时间点发生的动作对现在产生影响。have

2、/ has + past participle A: Ive looked at your resume. I see you work in a hotel. B: Yes, I do. A: How long have you had this job ?B: Ive had this job for only a shot time. But I have a lot of experience in the hotel business. In fact, my parents own a hotel in Mexico. A: How long have your parents o

3、wned a hotel?B: Most of their lives. A: Have you seen your parents recently ?B: Yes, I have. My mother has been to the U.S. a few times to see me. But my father has never been here because someone has to stay at the hotel all the time. Hes told me many times, “When you are an owner of a business ,yo

4、u dont have time for vacations. ” But I dont want to be an owner now. I just want a job as a manager. Have you filled the position yet ?A: No, I havent. Ive already interviewed several people A: _ your brother _ a new watch? (buy )B: Not yet.Has bought yet A: _ you ever _ to the park? ( be )B: Yes,

5、I went there last summer. Have been yet ever I _ never _ of anything like that. (hear )have heard yet ever never Tom _ in the factory since he left school ten years ago. (work )has worked yet ever never since A: How long _ you _ in this school? (teach )B: For 6 years. have taught yet ever never sinc

6、e for I _ just _ the desk, you can take it to your classroom . (mend )have mended yet ever never since for just _ you _ the Forbidden City (紫禁城) before ? (visit ) Have visited yet ever never since for just before He _ already _ a job. (find) has found yet ever never since for just before already We

7、_ only _ the first five questions so far. (discuss ) have discussed yet ever never since for just before already so far They _over 24,000 fruit trees up to now . (plant ) have planted yet ever never since for just before already so far up to now Great changes _ in Beijing in the past 10 years. (take

8、 place ) have taken place yet ever never since for just before already so far up to now in the past 10 years He _ a lot of good things in his life. (do ) has done yet ever never since for just before already so far up to now in the past 10 years in his life I _ her lately. ( not see ) havent seen ye

9、t ever never since for just before already so far up to now in the past 10 years in his life lately I _ him recently. (not hear from ) havent heard from yet ever never since for just before already so far up to now in the past 10 years in his life lately recently He _ in this city ever since then. (

10、live ) has lived yet ever never since for just before already so far up to now in the past 10 years in his life lately recently ever since then He _ in this high school till now. (teach ) has taught yet ever never since for just before already so far up to now in the past 10 years in his life lately

11、 recently ever since then till now He has bought the book. He has bought the book for a week. He has had the book for a week. buyhave/has hadcome tohave/has been ingo tohave/has been ingot tohave/has been injoin have/has been inhave/has been a soldier leave have/has been away borrow have/has kept be

12、gin have/has been on finish have/has been over die have/has been dead marry have/has been married She has bought the computer for two years.hadbuyhave/has hadHow long have you come to the United States？ been income tohave/has been inbuyhave/has hadAnn has gone to China since three months ago.been in

13、come tohave/has been inbuyhave/has hadgo tohave/has been inI have got to Paris for one week .been income tohave/has been inbuyhave/has hadgo tohave/has been ingot tohave/has been inMy brother has joined the army for five years. been inbeen a soldier come tohave/has been inbuyhave/has hadgo tohave/ha

14、s been ingot tohave/has been injoin have/has been inhave/has been a soldier I have left Shanghai for 3 days. been away for 3 days. come tohave/has been inbuyhave/has hadgo tohave/has been ingot tohave/has been injoin have/has been inhave/has been a soldier leave have/has been away I have borrowed th

15、e dictionary since 3 days ago . kept come tohave/has been inbuyhave/has hadgo tohave/has been ingot tohave/has been injoin have/has been inhave/has been a soldier leave have/has been away borrow have/has kept The film has begun for 10 minutes. been on come tohave/has been inbuyhave/has hadgo tohave/

16、has been ingot tohave/has been injoin have/has been inhave/has been a soldier leave have/has been away borrow have/has kept begin have/has been on The concert has finished for half an hour. been over come tohave/has been inbuyhave/has hadgo tohave/has been ingot tohave/has been injoin have/has been

17、inhave/has been a soldier leave have/has been away borrow have/has kept begin have/has been on finish have/has been over His dog has died for two years . been dead come tohave/has been inbuyhave/has hadgo tohave/has been ingot tohave/has been injoin have/has been inhave/has been a soldier leave have

18、/has been away borrow have/has kept begin have/has been on finish have/has been over die have/has been dead She has married for six years . been married come tohave/has been inbuyhave/has hadgo tohave/has been ingot tohave/has been injoin have/has been inhave/has been a soldier leave have/has been a

19、way borrow have/has kept begin have/has been on finish have/has been over die have/has been dead marry have/has been married have known knew saw have lost have did move lived did has finished see saw Good afternoon, doctorwrong with youhave hadallHave you taken yourtoHow long have you been like this

20、SinceHave hadto eating Take timesdayFill in the blanks with the simple present, simple Fill in the blanks with the simple present, simple past or present perfect tense of the verbs past or present perfect tense of the verbs I _ (be)I the U. S. now. I _ (live)here for one year. My life _(change) a lot since I _(come) to the U. S. For example, in my country I _(work) as an engineer, but I _(not/have) a job now. All this month, I have been looked for a job, but I_ (