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1、【初中英语】【初中英语】20182018人教人教新目标版八下新目标版八下Unit10IvehadthisbikefUnit10Ivehadthisbikeforthreeyearsorthreeyears语法专题语法专题- -GrammarFocusGrammarFocus习题课习题课件件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
2、 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 fo
3、r 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.(
4、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 as
5、leepbe 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 _(nev
6、er 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 seenlefthas beenishas never beenwill takehavent playe
7、dhave never visitedto 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 awayCleaves; has left7(毕节中考)Its nice to see you again.We _ each other since 2016.Awont see Bhavent seen Cdont see Ddidnt seeBB8How long_ you_ in Lipi
8、ng，Mr. Green?Since last month.Adid；come Bdo; come Chave；come Dhave; been9(江西中考)Since we began to use the Internet, our lives _ a lot.Achange Bhad changedCwill change Dhave changedDD10(北京中考)Lily is my classmate.We _ each other since she came to our school.Aknow BknewChave known Dwill knowC三、按要求完成下列句子
9、。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 bought the umbrella the day before yesterday.(改为同义句)Susan _ the umbrella _two days ago.have been inforhas been away fromhas hadsince结束结束
