初中状语从句讲解课件.pptVIP

状 语 从 句讲 练 ;用作状语的从句叫做状语从句。引导状语从句的关联词是一些从属连词。 例： When you cross the road, you must be careful. 当你过马路时要小心。（when是从属连词） I was late because I missed the bus. 我迟到了，因为我误了公共汽车。 （ because是从属连词）. If she asks me, I’ll tell her. 她如果问我，我就告诉她。（if是从属连词） You look as if you need a rest. 你像是需要休息似的。（as if是从属连词）.;状语从句的种类 1、时间状语从句 when, while, as soon as, since, until, before, after 2、条件状语从句 if 3、结果状语从句 so…that 4、比较状语从句 than 5、原因状语从句 because 6、让步状语从句 although, though 7、地点状语从句 where;1. 时间状语从句 引导时间状语从句的关联词常有：after, before, when, while, whenever, as soon as, as, since, until 等。 例： The ball goes up very high after it hits the ground. 这球着地后蹦得很高。 Wait until you’re called. 你等着叫你吧！ ; When he came, I was cooking. 他来时，我在做饭。 I’ll call you as soon as I come back. 我一回来就给你打电话。 Before they came back, we had finished the work. 他们回来前，我们已经完成工作了。 We haven’t seen each other since he left. 从他离开后我们没见过面。; ※ when: 持续性／非持续性动词都可以; while /when辨析 when/while+doing When/while reading,he fell asleep. when+终止性、延续性动词 while+延续性动词 When the teacher came in,I was sleeping. =While /When I was sleeping, the teacher came in. when (就在这时) I was sleeping, when someone knocked at the door.;※while 的其他含义： While I was walking down the street, I came across an old friend. ( while =_______) He likes pop music, while I am fond of folk music. ( while =_______) While I really don’t like art, I find his work impressive. (while=___________) While there is life there is hope. (while=_______________) ;※ as : 当…时；一边…一边；随着……;★ as的常见用法： 1.She sang as she worked. 一边……一边…… 2. You must try to do as I did. 像…..一样 3. As she was late for class, she had to say sorry. 由于;※ before ① 在……前 It will be half a year before I come back. It won’t be half a year before we meet again. We sailed four days and nights before we saw the land. We hadn’t run a mile before he felt tired. ;※till, until和not…unt