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1、Unit 12 Life is full of the unexpected.李仕才单元语法聚焦十二过去完成时过去完成时表示在过去某一时间或动作之前已经发生或完成的动作，它表示动作发生的时间是“过去的过去”。其结构为“助动词had(用于各种人称和数)过去分词”。表示过去某一时间可用by, before等构成的短语，也可用when, before等引导的从句等。His mother had already cooked dinner by the time he got home.到他回到家的时候，他妈妈已经做好了晚饭。When the police officer arrived at the
2、 store, the thief had run away.当警察到达商店时，小偷已经逃跑了。.用括号中所给单词的适当形式填空1That rich old man _ (make) a wish before he _ (die) last month. 2As the Kings got to the airport, the plane _ (take) off.3I _ (be) at the bus stop for 20 minutes when a bus finally came. 4Tom _ (say) he _ (read) the book twice by 2016.
3、 5The Reads _ (have) lunch before I _ (get) to their house at 12：30. 6When I _ (arrive) at the station this morning, he _ (leave). 7We _ (learn) about 4，000 English words by the end of last term. 8They _(plant) six hundred trees before last Wednesday. 9We were surprised at what she _ already _(do)10
4、The old man told us that he _ (collect) more than 3，000 stamps since he was fifty.根据汉语意思完成句子1直到那时他才意识到自己犯了个大错。Until then, he realized that he _ _ a big mistake.2当我起床时，妈妈已经从市场回来了。My mother _ _ back from the market when I got up.3到上学期结束的时候，我们已经学了三千多个单词。We _ _ more than three thousand words _ _ _ _ las
5、t term.4到他们到达山顶的时候，太阳已经升起来了。_ the _ they got to the top of the mountain, the sun _ _5我真不知道你已经独自一人把所有的任务完成了。I really didnt know that you _ _ all the tasks by yourself.按要求完成下列各题1The Chinese class started. I got to school.(用by the time合并为一句)The Chinese class _ _ by the time I got to school.2He had been
6、 to England before he went to work.(改为否定句)He _ _ to England before he went to work.3She had lived in New York for ten years by the end of last month.(改为一般疑问句)_ she _ in New York for ten years by the end of last month?.单项填空()1.Why was he late for the international meeting?By the time he got to the ai
7、rport, the plane _ already _A. has; taking off B. has; taken offC. would; take off D. had; taken off()2.When I arrived at the cinema, the movie _ for thirty minutes.A. had begun B. had been onC. has begun D. has been on()3.Why did your father seem so angry just now?He didnt find his pet dog which he
8、 _ for nearly three years.Ahad Bhas hadChad had Dwill have()4.What did they do in the meeting room yesterday?They discussed what they _ in the last two years.Ahad done Bwould doCwere doing Ddid()5.By the end of last week, she _ in the west of China for two months helping the homeless children.Awill
9、stay Bhas stayedCwould stay Dhad stayed参考答案单元语法聚焦十二语法精练.1.had made; died2.had taken3had been4.said; had read5had had; got6.arrived; had left7had learned8.had planted9had; done10.had collected.1.had made2had come/gotten/got3had learned; by the end of4By; time; had risen5had completed/finished.1.had started2.hadnt been3Had; lived.1.D2.B3C考查过去完成时态。根据句中的时间状语“for nearly three years”可知，要用完成时态，主句中的didnt表明是一般过去时态，因此用过去完成时，故选C。4A5.D 3
