初中英语非谓语动词用法.pptx

初中英语非谓语动词用法不定式、动名词用作主语动名词作主语1、Seeing is believing、2、Doing morning exercises every day is good for health3、Smoking is not a good habit1。直接作主语:(1)眼见为实。(2)天天做早操有益于健康。(3)吸烟不是好习惯。2、用it作形式主语,常与no use,no good,useless, worthwhile连用1、It’s no use talking too much without doing anything2、It’s useless crying over the spilt milk、3、It’s no good smoking too much4、It’s worthwhile learning English well、5(1)广说不做没用(2)做无益的后悔没用(3)吸烟太多无益(4)学好英语是值得做的1、To see is to believe2、To do morning exercises today is not good for health、3、To smoke here is dangerous1。直接作主语(1)眼见为实(2)今天早晨做早操对身体无益(3)在这个地方吸烟特别危险2。用it作形式主语,有自己特定的句型1、It is very kind of you to say so、2、It’s very foolish of him to say such things3、It is necessary for us to learn English well4、It’s not difficult for you to learn well English grammar(1)您这么说真是太好了(2)他说出如此的话太愚蠢了(3)我们学好英语是必要的(4)您们学好英语语法并不难3、固定句型(1)李垒每天花两个半小时完成作业(2)您昨晚用多长时间写完的作文？1、It takes LiLei two and a half hours to plete his homework、2、How long did it take you to finish writing your position?不定式作主语小结:动名词与不等式作主语时的区别一、对称原则二、特别表达三、固定句型四、习惯用法主语和表语对称动名词表示经常性、反复发生的动作不等式表示具体的、某一次的动作It takes sb some time to do sthIt’s no use/no good /useless/worthwhile + doing …It’s kind/wise/clever… of sb to do sthIt’s important/necessary/hard …for sb to do sthTask: plete the following sentences________________(没有用) learning without practiceIt’s no good ________________________________(广说不做)It’s necessary _____________________________(我们学好英语)It’ very kind ____________________________ (您帮助我)How long __________________________(您每天参加体育活动？)Because of the heavy sand storm, ________________(今天做晨练) is of no benefit to you、It’s no usetalking too much without doing anythingfor us to learn English wellof you to help medoes it take you to do sport every day to do morning exercises todayMultiple choice1、 It is very generous _____ you to buy me such a nice giftof B、 for C、 to D、 with2、 You are clever; it will be easy ____ you to work out the word puzzleof B、 for C、 to D、 with3、I think