人教版中考英语复习之时间条件原因状语从句 课件.ppt

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1、专题十四 并列句和复合句,中考英语语法专题,本专题内容适用于9年级学生,本专题一般共需5课时,第二课时 状语从句(一）,一、状语从句分类二、状语从句讲解三、巩固练习,用来修饰主句中的动词，副词和形容词的从句叫状语从句。根据其含义状语从句可分为时间状语从句，地点状语从句，条件状语从句， 原因状语从句，结果状语从句，比较状语从句，目的状语从句，让步状语从句。状语从句可置主语之前，也可置于主语之后。前置时，从句后用逗号与主句隔开；后置时，与主句之间无标点符号。It was raining when we got to school.If it is sunny tomorrow I will go

2、camping with you.He didnt visit the museum with us because he was ill yesterday.Although they are tired they still help us with the project.,一、状语从句分类,时间状语从句when, as, while, before, after, since, till, notuntil, as soon as原因状语从句because, since, as, for, now that, etc. 条件状语从句if, unless（除非）,目的状语从句in ord

3、er that, so that,结果状语从句sothat, so that, suchthat, 让步状语从句though, although, even if, even though, however, whatever,比较状语从句asas, soas, than,地点状语从句where, wherever,1.时间状语从句(1)时间状语从句常用when/ as/ while, before, after, since, till, until, as soon as等连词来引导。例如： It was raining hard when I got to school yesterda

4、y.While he was doing his homework, the telephone rang.As he walked along the lake, he sang happily.He had learned a little Chinese before he came to China.After he finished middle school, he went to work in a factory.,二、状语从句讲解,2.when 、as和 while的区别：1） when引导的从句的谓语动词可以是延续性的动词，又可以是瞬间动词。并且when有时表示“就在那时”。例如：When she came in, I stopped eating.她进来时，我停止吃饭。(瞬间动词)When I lived in the countryside, I used to carry some water for him.当我住在农村时，我常常为他担水。（延续性的动词）We were about to leave when he came in.我们就要离开，就在那时他进来了。(瞬间动词),