【正文】 been playing 4. have visited 5 . have been touring6. has。用所給動詞的適當(dāng)形式填空1. The aliens say they e from zeton and haven’t been found? I saw you shaking hands with hem at the meeting.down last month.D. was going down27. I wonder why JennyA. just help outB. had paintedC. hasn’t decidedB. was reviewing。1,700 English words and phrases. has taken have been training12. Melissa: Hi, Mary. It’s nice hearing from you.D. meet8. Ted: I came to Canada last autumn. What about you, Jim?現(xiàn)在完成時與現(xiàn)在完成進(jìn)行時的區(qū)別例since說明動作起始時間I have lived here since I was born.自從出生以來我一直住這兒。It is the first time that I have visited the city. 這是我第一次參觀這座城市。近來，我沒收到他的任何信件。 也可表示持續(xù)到現(xiàn)在的動作或狀態(tài)。The boy has already e home．(男孩已經(jīng)回家，但沒有指出何時回家)表示剛結(jié)束的動作?，F(xiàn)在完成進(jìn)行時表示某一動作在過去開始發(fā)生, 已經(jīng)持續(xù)到現(xiàn)在, 并且還將持續(xù), 或剛剛停止。We have cleaned the classroom．我們把教室打掃過了。C. have been makingA. workedD. had been worked3. Now that you have you been doing6. Annie: I’m sorry to keep you waiting.Paul: Yes, it all depends on the weather.A. had thought ofA. finishedB. don’t haveC. learned have done19. IA. have been researching。D. have been looking。 swum7. has been reading(play) puter games?4. Theythe childrenyouC. are looking。C. didn’t sleep D. Hadn’t you met him yet30. IA. reviewed。D. learn18. IA. should learnC. haven’t hadB. have finishedD. have waited。Mary: IB. were losing。so hard in the past years.D. had been10. Billy:D. have made2. Mr. White works as a lawyer now, but he表示過去開始的動作剛結(jié)束并在某種情況下與現(xiàn)在有關(guān)聯(lián)。那是二十多年前的事了，從那時起我一直就在那兒。t seen him since he left Nanjing．自從他離開南京我們就一直沒見到過他。The boy has already e home．男孩已經(jīng)來家了。 表示動作從過去開始，并一直延續(xù)到現(xiàn)在，一般可用for／since短語或由since引導(dǎo)的時間狀語從句。1) It is the first / second time.... that…結(jié)構(gòu)中的從句部分, 用現(xiàn)在完成時。如：We have been cleaning the classroom．我們打掃教室來著。as an actor for several years.B. areA. are workingA. had metthe sport meeting might be put off.ing to visit you but too much work prevents me from doing so. has takenmy history this time yesterday. Now IC. have been researching。C. telephonedC. has gone downA. hasn’t writtenB. Didn’t you meet him yetmy washing