《2019春八年级英语下册 Unit 10 I’ve had this bike for three years语法专练课时作业 （新版）人教新目标版》由会员分享，可在线阅读，更多相关《2019春八年级英语下册 Unit 10 I’ve had this bike for three years语法专练课时作业 （新版）人教新目标版（3页珍藏版）》请在金锄头文库上搜索。
1、单元语法专练现在完成时(三)1.延续性动词。延续性动词表示能够延续的动作,如work,keep,have,sleep,live,stay等。可以与表示时间段的状语连用。2.非延续性动词。非延续性动词又称短暂性动词或终止性动词,表示不能延续的动作,这种动作发生后立即结束,如open,die,close,come,go等。在肯定句中与表示时间点的状语连用,在否定句中可以与表示时间段的时间状语连用。3.延续性动词与非延续性动词的转换。非延续性动词的完成时态表示动作完成并产生了影响或结果。一般不能与表示时间段的状语连用。若与表示时间段的状语连用,则要把非延续性动词变成相应的延续性动词。常见动词的转化如
2、下表:非延续性动词延续性动词非延续性动词延续性动词borrowkeepopenbe openbuyhaveleavebe away frombecomebediebe deadput onwearfinishbe overmove tolive inreturnbe backrecognizeknowfall inbe inbegin/startbe onfall asleepbe asleepcome/gobe here/thereget to/arrive/reachbe (in)come backbe backget to knowknowgo/get outbe outget upbe
3、 upcatch a coldhave a coldget marriedbe marriedjoinbe in/be a member ofshowbe on4.since和for的用法。since和for都可用于现在完成时,for后面接一段时间,表示动作的持续时间;since后面接时间点,表示动作的起始时间点。例如:I have been here for two years.我已经在这里待了两年了。I have been here since 2005.自2005年开始我就在这里。.根据句意用for或since填空1.I have kept the dictionary for two
4、weeks.2.I havent heard from him since last year.3.My uncle has taught at this school since ten years ago.4.Aunt Wang came here last year.Shes been here for about a year.5.Great changes have taken place in my hometown since I left there.根据句意用所给词的适当形式填空1.I have been(be) at work since eight oclock,but
5、Im leaving soon.2.We havent met(not meet) each other for five years.Both of us left(leave) the factory five years ago.3.I waited(wait) at the restaurant for an hour,and then I left.4.We must get a new car.We have had(have) this one for ten years.单项填空(A)1.How long have you ?For almost 10 years.A.owne
6、d this gardenB.bought this carC.arrived in ShanghaiD.come to this town(C)2.Will you watch the program KeepRunning in Zhejiang TV tonight?Yes,of course.It one of the most popular shows since 2015.A.wasB.becameC.has beenD.has become(A)3.Since 2009,ModernFamily us the funny,sad and moving stories of three American families.A.has givenB.will giveC.gaveD.gives(C)4.Is that a new coat?No,I it for a long time.A.boughtB.have boughtC.have hadD.had bought回顾一年的工作，我也发现了自己的不足之处。如科研方面尚嫌薄弱，全年未发表过一篇论文。今后在这方面应多加努力，要增强科研意识，多投注些时间和精力，刻苦学习，努力钻研，改变科研空白局面，为今后的学术研究工作打下良好的基础。3
