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At this time tomorrow _ over the Atlantic. A. were going to fly B. well be flying C. well fly D. were to fly 动词特定的时态常常与特定的时间状语联系在一起，如由this time yesterday可知用过去进行时；由so far, in the past three years, till now可知要用完成时，等等。,由时间状语at this time tomorrow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,Lets keep to the point or we _ any decisions. A. will never reach B. have never reached C. never reach D. never reached,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/It is the second time that句型中用现在完成时，若is改为was，就用过去完成时；(3) 在no soonerthan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/were about to dowhen或was/were doingwhen或was/were on the point of doingwhen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,Can I help you, sir? Yes. I bought this radio here yesterday, but it _. A. didnt work B. wont work C. cant work D. doesnt work,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。 Is this raincoat yours? No, mine _ there behind the door. A. is hanging B. has hung 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 rang It 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,wa