仁爱版中考英语复习八年级Unit6.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,2020/8/9 Sunday,#,2026/10/10,仁爱版中考英语复习八年级Unit6,语法梳理,一、动词不定式的用法,。,二、时间状语从句。,三、条件状语从句。,动词不定式的用法,不定式结构,1.带to的不定式结构：,want,ask,tell,hope,learn,try,decide,forget,remember,like,love,stop,go,come,2.不带to的不定式结构：,1）.had better(not)do,2）,.在let,make,see,feel,watch,hear等感官或使役动词后，要跟不带to的动词不定式作宾语补足语,3）.Why not do sth,4）.不定式动词在介词but,except,besides后面时，如这些介词前有实义动词do的各种形式，则后接不带to的不定式，否则带to。,动词不定式的用法,2.宾语,1.主语,4.定语,不定式的用法,例：To live is to work.,例：I wish to be a college student.,3.表语,5.状语,6.补语,例：My main job is to study.,例：I have some food to eat.,例：He got up early to catch the early bus.,例:He asked me to talk about English study.,不定式的时态,不定式常用的时态有,一般时,、,完成时,、,进行时,和完成进行时四种，常用的为前三种。,1）一般式表示不定式的动作或状态与谓语动词所表示的动作,同时发生,或在,之后,发生。,I plan to attend the meeting.,2）完成式表示不定式的动作发生在谓语动词表示的动作,之前,。,3）进行式表示不定式的动作与谓语动词所表示的动作,同时发生,。,I am sorry to have kept you waiting.,They are said to be working hard.,to do,to have done,to be doing,时间状语从句,由when,while,as，as soon as,after,before,since,Untill,till 等引导的时间状语从句。,区别,when,while,进行时+when+一般时,一般时+while+进行时,进行时+while+进行时,由till或until引导的时间状语从句,till和until一般情况下两者可以互换，但是在强调句型中多用until。并且要注意的是：如果主句中的谓语动词是瞬时动词时，必须用否定形式；,如果主句中的谓语动词是延续性动词时，用肯定或否定形式都可以，但表达的意思不同,。till不可以用在句首，而until可以放在句首。,区别,I worked until he came back.,I didnt work until he came back.,他回来我这才开始工作。,我工作到他回来为止。,条件状语从句,引导条件状语从句的连接词主要有：if(如果）、unless=ifnot（除非）、aslongas（只要）等,。,时态,1.“主将从现”,3.如果主句含有情态动词，从句一般也用一般现在时。,I will come to see you if I am free.,2.如果主句是祈使句，从句也常用一般现在时。,主句,从句,考点剖析,We will stay at home if my aunt _ to visit us tomorrow.,come B.comes,C.will come D.is coming,Do you know if he _ to play basketball with us?,I think he will come if he _ free tomorrow.,A.comes;is B.comes;will be,C.will come;is D.will come;will be,答案为B,答案为C,project,1.Tell about a traffic accident you have seen.,2.Talk about the traffic rules you,know.,3.Discuss how to avoid traffic accidents,and then write a report.,