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好的事.They will be discussing the problem this time next week.2. 表示預(yù)料不久要發(fā)生或勢(shì)必要發(fā)生的動(dòng)作.The train will not be leaving until one o’clock.8)現(xiàn)在完成時(shí)1. 表示動(dòng)作剛剛完成.I have finished that work.2. 表示過(guò)去做的動(dòng)作對(duì)現(xiàn)在仍有影響.Who has opened the door?3. 表示過(guò)去某時(shí)開(kāi)始的動(dòng)作一直延續(xù)到現(xiàn)在并且可能會(huì)延續(xù)下去.He has worked in the pany since he came to the city.9)過(guò)去完成時(shí)1. 表示在過(guò)去某一時(shí)間或動(dòng)作之前已經(jīng)完成的動(dòng)作.By the end of 2002,the factory had produces 200000cars.2. 表示在過(guò)去某一時(shí)間開(kāi)始一直延續(xù)到另一個(gè)過(guò)去的時(shí)間的動(dòng)作.The old man had been ill for a long time before he died in 2002.注:當(dāng)含有由before, after, as soon as等引導(dǎo)的復(fù)合句中,由于連詞本身可以明確表示動(dòng)作發(fā)生的順序,故主句和從句一般都用一般過(guò)去時(shí).I went home after I finished my work.過(guò)去完成時(shí)常用于no sooner than和hardly, scarcely…when等句型,從句用一般過(guò)去時(shí).He had hardly got on the train when the train started out.10)將來(lái)完成時(shí)表示將來(lái)某一時(shí)刻或某一行為發(fā)生之前所完成的動(dòng)作或這一動(dòng)作仍在持續(xù).常和by或by the time等連用.By the end of this term, we shall have learned 18 lessons.1)現(xiàn)在完成進(jìn)行時(shí)1. 表示從過(guò)去某時(shí)一直持續(xù)到現(xiàn)在的一個(gè)動(dòng)作.It has been snowing since last Sunday.2. 重復(fù)的動(dòng)作表示感情色彩.She’s been saying that twenty times.3. 已結(jié)束的動(dòng)作所產(chǎn)生的影響.You have been cleaning the classroom, I think.2)過(guò)去完成進(jìn)行時(shí)表示過(guò)去某時(shí)以前一直進(jìn)行的一個(gè)動(dòng)作這一動(dòng)作可能在這一時(shí)間前剛結(jié)束或仍在進(jìn)行.No one knew what this dad egg had been doing all this years.Exercise1. where ________ the recorder? I can’t see it anywhere. I _______ it right here, but now it’s gone.A. did you put。 have put2. When ________ again? When he _____, I’ll let you know.A. he es。 es3. They asked me to have a drink with them. I said that it was at least ten years since I _______ a good drink.A. had enjoyed B. was enjoyingC. enjoyed D. had been enjoying4. –Come in, Peter. I want to show you something.Oh, how nice of you! I ______ you ________ to bring me a gift.A. never think。 stolen5. The police found that the house _____ and a lot of things _______.A. has broken into。 stolen6. –We could have walked to the station. It was so near. Yes, taxi ______ at all necessary.A. wasn’t B. hadn’t been C. serves D. served7. If city noises ______ from increasing, people _______ shout to be heard even at the dinner table 20 years from now.A. are not kept。 looked 8. The last time I ______ Jane she ______ cotton in the fields.A. had seen。 was picking9. In some parts of the world, tea ___ with milk and sugar.A. is serving B. is served C. serves D. served10. The pen I ___ I _______ is on my desk, right under my nose.A. think。 got11. – Your phone number again? I _____ quite catch it. It’s 9568442.A. didn’t B. couldn’t C. don’t D. can’t12. Helen ___her keys in the office so she had to wait until her husband ___home.A. has left。 wou