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Unit 10 Ive had this bike for three years. 八年级下册英语(人教版)八年级下册英语(人教版) 单元语法专题Grammar Focus since和for的区别 since和for都用于现在完成时中,其中since后面可接过去的时间点, 也可接“一段时间ago”,还可以接从句;for后面只能接“一段时间 ”。如: My parents have lived in this city since 2009.我的父母从2009年起就居 住在这座城市。 She has been a doctor since two years ago.她从两年前就当医生了。 Lily has had the toy bear for two years.莉莉已经有这个玩具熊两年了。 【注意】(1)终止性动词也称非延续性动词,可以用于现在完成时 ,说明某个动作的结果还存在,但不能与表示一段时间的状语连用 。如: The Whites have come back.(正) The Whites have come back for two days.(误) (2)在否定句中,终止性动词可以与表示一段时间的状语连用。如 : I havent heard from my friend for three weeks.我已经有三周没有收 到我朋友的来信了。 【拓展】当终止性动词与表示一段时间的状语相矛盾时,常用以 下方法进行转换: (1)用ago把现在完成时的句子改为一般过去时。如: He has left the village for six days.(误) He left the village six days ago.(正) (2)用“一段时间has passedsince一般过去时”句型改写。如 : She has borrowed the book for two weeks.(误) Two weeks has passed since she borrowed the book.(正) (3)用“It has been一段时间since一般过去时”句型改写。如 : His grandfather has died for a few years.(误) It has been a few years since his grandfather died.(正) (4)用系表结构(be形容词副词)改写或用相应的延续性动词代替终 止性动词。如: come/arrive/gobe in/at, begin/startbe on,finish/end/stopbe over ,openbe open, diebe dead,leavebe away,closebe closed, fall asleepbe asleep,joinbe a member of/be in,becomebe, buyhave,borrowkeep,get to knowknow,put onwear,catch a coldhave a cold,come backbe back 一、用括号内所给单词的适当形式填空。 1We _(not see)each other since I _(leave) the university. 2The hospital _(be) here for 10 years. It _ (be) the tallest building in our city. 3She _(never be) to the amusement park since two years ago.Her parents _(take) her there next week. 4I dont want to give away my football shirts although I _(not play) for a while now. 5I _(never visit) the Great Wall before.I want _(visit) it one day. havent seenleft has been is has never been will take havent played have never visited to visit 二、单项选择。 6(导学号:38274041)(齐齐哈尔中考)How long is it since he _ this school? He _ for three years. Ahas left; has left Bleft;has been away Cleaves; has left 7(毕节中考)Its nice to see you again.We _ each other since 2016. Awont see Bhavent seen Cdont see Ddidnt see B B 8How long_ you_ in Liping,Mr. Green? Since last month. Adid;come Bdo; come Chave;come Dhave; been 9(江西中考)Since we began to use the Internet, our lives _ a lot. Achange Bhad changed Cwill change Dhave changed D D 10(北京中考)Lily is my classmate.We _ each other since she came to our school. Aknow Bknew Chave known Dwill know C 三、按要求完成下列句子。 11Her parents came to China five years ago.(改为同义句) Her parents _ China _ five years. 12My father left home the day before yesterday.(用for two days改写 句子) My father _home for two days. 13Susan
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