Unit 12【核心语法】-2021-2022学年九年级英语链接教材精准变式练(人教版).docx
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1、核心语法 Unit 12 2021-2022学年九年级英语链接教材精准变式练(人教版)教材核心语法知识链接及典例解读=过去完成时:表示某动作或状态在过去某一时间或动作之前已经发生或完成,它表示动作发生的时间是“过去的过去”。过去完成时由“助动词had (用于各种人称和数) + 过去分词”构成,表示某动作或状态在过去某一时间或动作之前已经发生或完成,它表示动作发生的时间是“过去的过去”。1. 过去完成时的句式结构(1) 肯定句:主语 + had + 过去分词 + 其他.(2) 否定句:主语 + hadnt + 过去分词 + 其他.(3) 一般疑问句:Had+ 主语 + 过去分词 + 其他? 肯定
2、回答:Yes, 主语 + had. 否定回答:No, 主语 + hadnt.2. 过去完成时的用法表示在过去某一时间或动作之前已经发生或完成了的动作;表示动作发生在过去的过去。(2) 过去完成时态常见的引导词有:by the time, when, before, by。(3) 在含有when, before等引导的时间状语从句的复合句中, 主、从句的动作都发生在过去,且有明显的先后关系,动作在前的用过去完成时,动作在后的用一般过去时。(4) 常用在said, told, knew, heard, realized等的宾语从句中。3. 一般过去时和过去完成时的区别一般过去时表示过去某时间发生的
3、动作或存在的状态,而过去完成时则表示过去某一时间以前(即过去的过去)发生的动作或存在的状态。综合提升变式练习一、单项选择1By the time the teacher came, we _ cleaning the classroom.AfinishedBhave finishedChad finished2By the end of last month,Jane_enough money for the poor sick boy.AraisedBwould raiseChad raisedDhas raised3By the end of last month, I_all the C
4、Ds of Justin Bieber.AcollectBcollectedChave collectedDhad collected4By the end of last week, Maggie _ in the west of China for two months helping the homeless children.Awill stayBhas stayedCwould stayDhad stayed5Did you see the hit New Years movie If You Are The One(非诚勿扰)last night? Yes. But when I
5、got to the movie theatre, the film _ for ten minutes.Ahad begunBhad been onChad startedDbegun6The girl sitting next to me on the plane was very nervous, for she _before.Adidnt flyBhasnt flownChadnt flownDwasnt flying7When we got to Yushu airport, we were told that they_ more than 500 people from the
6、 ruins(废墟)by earthquake.Ahas savedBsavedChad savedDhave saved8The vegetables didnt taste very good. They_for too long.AcookedBwere cookedChad cookedDhad been cooked9The_look on his face suggested that he_ that.Asurprising; hadnt expectedBsurprised; hadnt expectedCsurprising; would expectDsurprised;
7、shouldnt expect10The police found that the house _and a lot of things _.Ahas broken into; has been stolenBhad broken into; had been stolenChas been broken into; stolenDhad been broken into; stolen11By the time we got to the station, David_for ten minutes.Ahas leftBhad leftChas been awayDhad been awa
8、y12Mrs. Brown_ her keys in the office, so she had to wait until her husband _ home.Ahas left; comesBhad left; cameChad been away; cameDhas been away; comes13Wang Ying is good at English. She _ nearly two thousand English words by last month.AlearnsBlearnedChas learnedDhad learned14If I _ harder when
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