语法填空动词变化.ppt
语法填空-动词变化,判断动词时态的技巧,一、根据时间状语与时态的对应关系,如Atthistimetomorrow_overtheAtlantic.A.weregoingtoflyB.wellbeflying C.wellfly D.weretofly 动词特定的时态常常与特定的时间状语联系在一起，如由thistimeyesterday可知用过去进行时；由sofar,inthepastthreeyears,tillnow可知要用完成时，等等。,由时间状语atthistimetomorrow可知用将来进行时，故选B。,二、固定句型与动词时态间的对应关系,Letskeeptothepointorwe_anydecisions.A.willneverreach B.haveneverreached C.neverreach D.neverreached,这是“祈使句+or+陈述句”句型，陈述句的谓语要用“will+动词原形”，故选A,在英语中，不少句型与一些动词在时态的运用方面都存在着特定的对应关系，如(1)在“祈使句+and/or+陈述句”句型中，陈述句中用will表示的一般将来时；(2)在This/That/Itisthesecondtimethat句型中用现在完成时，若is改为was，就用过去完成时；(3)在nosoonerthan和hardlywhen句型中，前面常用过去完成时，when/than后的句子用一般过去时；,(4)was/wereabouttodowhen或was/weredoingwhen或was/wereonthepointofdoingwhen句型中（正要 即将)，when分句的谓语动词用一般过时；(5)在一个含有时间状语从句的主从复合句中，如果主从句的谓语动词都是过去发生的动作，一般来说，表示短暂性动作的动词用一般过去时，表示持续性动作的动词用过去进行时；等等。,三、根据某些动词与时态的对应关系,CanIhelpyou,sir?Yes.Iboughtthisradiohereyesterday,butit_.A.didntworkB.wontwork C.cantwork D.doesntwork,此处的work是指radio不能正常运行，应用一般现在时的否定式，故选D。,四、根据上下语境来确定时态,在绝大多数情况下，动词的时态是由上下文来决定的，这就要求我们一方面要熟记各种时态的适用范围，另一方面要求我们注意上下文的提示。Isthisraincoatyours?No,mine_therebehindthedoor.A.ishanging B.hashung C.hangs D.hung,根据上下文的提示，hang表示的是目前的状态，故选A。,Have a test!,1、I ll give the book to him as soon as he _ back.2、Has the baby _ crying yet?(stop)3、I don t know whether Mother _ me to Beijing next month.(take)4、She _ on her coat and went out.(put),comes,stopped,will take,put,5、“What are they doing?”“They _ ready for the sports meeting.”(get)6、The boy asked his mother _him go and play basketball.(let)7、Im sorry to keep you _ for a long time.(wait),are getting,to let,waiting,8、Mr.Yu _(teach)us maths since 1982.9.The windows of our lab _(clean)once a week.10、Our teacher _(join)the party twenty years ago.11、She_(work)in this factory for ten years.,has taught,are cleaned,joined,has worked,12.It is the first time that I _(visit)the city 13.No sooner _he_(enter)the office than the telephone rangIt is my second time that I _(see)this book.,have visited,had entered,have seen,14.I _(do)my homework when UFO_(arrive).15.While I_(sleep),my father _(come)in.16.Work hard and you _(succeed)，,was doing,arrived,was sleeping,came,will succeed,=Working hard,you will succeed,Homework Finish the exercises of Jinbang No.1(p42-p43),
