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1、Unit 17 Laughter Period ThreeGrammar 课时精练（北师大版选修6，课标通用）单项填空1Tracy_from a bad cold when she took the exam.Ais suffering Bwould sufferChad suffered Dhad been suffering答案DTracy考试期间一直患有感冒。2Their football game was interrupted；they_for about 15 minutes when it started to rain.Ahad been playing Bhave playe
2、dCplayed Dhave been playing答案A截止到过去某个时间为止已经持续了一段时间用had been doing。3Joseph_his lessons for a short while when his little brother interrupted him.Ahad reviewed Bwould be reviewingChad been reviewing Dwas reviewing答案C同上。4After 15 miles she suddenly realized that she _in the wrong direction.Ahas been dr
3、iving Bwould driveChad been driving Ddrove答案C同上。5I called Ben many times yesterday afternoon，but I couldnt get through.his sister on the phone the whole time!Awas talking Bhas been talkingChas talked Dtalked答案A过去一段时间内一直进行的动作用过去进行时。6Tom the piano for two hours when his mother told him to take a break
4、 for supper.Ahave been playing Bhad been playingCwas playing Dwould play答案B解释同2题。7I first met Li Na 5 years ago.She_in a foreign company then.Ahad worked Bhas workedCwas working Dhad been working答案C过去那个时候正在做某事用过去进行时。8Why does the lake smell terrible?Because large quantities of water_.Ahave polluted
5、Bis being pollutedChas been polluted Dhave been polluted答案Dlarge quantities of.作主语，谓语动词用复数形式，用现在完成时表示对现在造成的影响或后果。9Im sure Andrew will win the first prize in the final.I think so.He_for it for months.Ais preparing Bwas preparingChad been preparing Dhas been preparing答案D截止到现在某个时间为止一直在进行的动作用have been d
6、oing。10Have you got any job offers?No.I_.Awaited Bhad been waitingChave waited Dam waiting答案D现在正在等，用现在进行时。11Linda hasnt finished her homework yet as she_her mother in the kitchen the whole morning.Ahas been helping Bwas helpedCwould be helping Dhelps答案A解释同9题。12I had to write to Becky again because I
7、_a reply.Ahadnt received Bwasnt receivingCdont receive Dhasnt received答案A截止到我得再次写那个时候还没有收到用hadnt received。13Janes parents_about the plan for five minutes when she walked into the room.Ahave talked Bhad been talkingCwere talking Dtalking答案B同2题。14When Alice came to，she did not know how long she_there.
8、(2011课标全国)Ahad been lying Bhas been lyingCwas lying Dhas lain答案A当艾丽斯醒来时，她不知道自己在那儿躺了多久。根据时态一致的原则，可排除B、D两项；由she did not know how long.可知应用过去完成进行时，表示持续发生的动作。15In order to find the missing child，villagers_all they can over the past five hours.(2012安徽，26)Adid BdoChad done Dhave been doing答案D句意：为了找到那个失踪的孩子，在过去的五个小时里，村民们一直在竭尽全力(寻找)。考查时态的基本用法。根据over the past five hours可知用现在完成进行时，表示动作开始于过去，一直持续到现在，且现在还在进行。
