1、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
2、词的转化如下表:非延续性动词延续性动词非延续性动词延续性动词borrow keep open be openbuy have leavebe away frombecome be die be deadput on wear finish be overmove to live in return be backrecognize know fall in be inbegin/start be on fall asleep be asleepcome/gobe here/thereget to/arrive/reachbe (in)2come back be back get to know
3、 knowgo/get out be out get up be upcatch a cold have a cold get married be marriedjoinbe in/be a member ofshow be 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 f
4、or 或 since 填空1.I have kept the dictionary for two 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
5、的适当形式填空1.I have been (be) at work since eight oclock,but I m leaving soon. 32.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 fo
6、r ten years. .单项填空(A)1.How long have you ? For almost 10 years.A.owned 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.was B.becameC.has been D.has become(A)3.Since 2009,ModernFamily us the funny,sad and moving stories of three American families. A.has given B.will giveC.gave D.gives(C)4.Is that a new coat?No,I it for a long time. A.bought B.have boughtC.have had D.had bought
