八级英语下册UnitI'vehathisbikerthreeyears第三课时(Grammarus4)单元同步语法精讲精练作业课件新版人教新目标版

第三课时(GrammarFocus­4c)—单元同步语法精讲精练Unit10I'vehadthisbikeforthreeyears.►现在完成时表示从过去某一时刻延续到现在的动作或状态，常与for，since引导的时间状语连用。for＋一段时间，since＋过去时间点或从句(从句的谓语动词用过去式)。eg：Ihavelivedherefortwentyyears.我住在这里已有20年了。Wehavebuiltmanyfactoriessince1985.自1985年以来，我们建了许多工厂。HehasalwayshelpedmewithmyEnglishsincehecamehere.自从他到这里以后，他总是帮助我学习英语。►有的动词所表示的动作不是瞬间就可以完成的，要持续一段时间，这样的动词叫延续性动词。不能延续下去的动词，叫非延续性动词或瞬间动词。如：buy，borrow等，这些动词在完成时中可改为相应的表示延续性的词或短语来与表示一段时间的状语连用。如：buy→have，borrow→keep，come→be，join→be，die→bedead，begin→beon等。eg：Hejoinedthearmytwoyearsago.他两年前就参军了。＝Hehasbeeninthearmyfortwoyears.他在部队已经两年了。＝Hehasbeenasoldierfortwoyears.他成为一名战士已经两年了。一、根据句意，选用for或since完成句子。1．I'veknownhim

fouryears.2．We'velivedhere

Iwasachild.3．She'swaitedforhim

twenty­fiveminutes.4．They'vebeenmarried

1988.5．It'sbeenthreeyears

Ileftmyhometown.forsinceforsincesince二、用所给单词的适当形式填空。6．I

(be)atworksinceeighto'clock，butI'mleavingsoon.7．We

(notmeet)eachotherforfiveyears.Bothofus

(leave)thefactoryfiveyearsago.8．I

(wait)attherestaurantforanhour，andthenIleft.9．Wemustgetanewcar.We

(have)thisonefortenyears.10．Children

(nevervisit)theGreatWallbefore.Theirparents

(take)themtherenextmonth.havebeenhaven'tmetleft(had)

waitedhavehadhavenevervisitedwilltake三、单项选择。11．—____haveyoubeeninthesportsclub?—SincethefirstmonthIcametotheschool.A．Howold

B．HowlongC．HowmuchD．Howsoon12．Myparents____ourhomeforafewhourswhenIarrived.Ididn'tmeetthem.A．hadbeenawayfromB．hadleftC．havebeenawayfromD．haveleftBA13．Ivisitedhimthreedays____．ButhehasgonetoShanghaiaweek________.A．ago；agoB．before；beforeC．before；agoD．ago；before14．I'mlookingafterTomtoday.He'sbeeninmyhouse____8：00thismorning.A．at

B．for

C．since

D．till15．—Lookatthesestamps.I____themfor5years.—Wow，theyarewonderful.A．keptB．havekeptC．haveboughtD．boughtDCB四、根据汉语意思完成句子。16．到目前为止，迈克已经唱了五首歌。Mike

fivesongs

．17．格林夫人还没有收到她女儿的信。Mrs.Green

theletterfromherdaughter

．18．两年前我就买了这块手表。I

thiswatchtwoyearsago.I

thiswatchsincetwoyearsago.has

sungso

farhasn't

receivedyetboughthave

had19．他2012年搬到了法国。He

toFrancein2012.He

inFranceforaboutfouryears.20．一周前我借了这本书。I

thisbookaweekago.I

this