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1、状语从句,1. What is it?,用来修饰主句或主句的谓语,2. what are the sorts?,时间状语从句 条件状语从句 地点状语从句 原因状语从句 让步状语从句 目的状语从句 结果状语从句 比较状语从句,1. 时间状语从句,Examples:,When/As/While he was eating his breakfast, he heard the door bell. It has been two years since I came to Beijing. Whenever we met with difficulties, they came to help u
2、s. I got in touch with him immediately I received his letter. My sister came the moment she got my message. Every time I catch a cold, I have pain in my back.,从句动词为非延续性动词: The boy cried when he saw his mother. 从句动词为延续性动词: while强调“在的同时” as强调“伴随”的状态，“一边一边” Tom fell asleep while Jerry was giving a lect
3、ure. He sang as he went along,辨析：when / while / as,when,while, as , when均可,时间状语从句的破题方法,1. He transplanted the little tree to the garden _ it was the best time for it. （2007上海） A. where B. when C. that D. until 2. Are you ready for Spain? Yes. I want the girls to experience that _ they are young. (20
4、08上海) A. while B. until C. if D. before,真题演练,（1）until/till 延续性动词+肯定语气：到为止 e.g.Walk you come to a white house. 非延续性动词+否定语气：到才开始 notuntil e.g. We begin our discussion he came back.,其他引导词：,till,didnt,until,真题演练,1. A good storyteller must be able to hold his listeners curiosity _ he reaches the end of t
5、he story. （2003上海） A. when B. unless C. after D. until 2. My uncle _ until he was forty-five.（2000上海） A. married B. didnt get married C. was not marrying D. would marry,(2) once, the moment, as soon as 表示“一就” e.g. he goes, we can clean up.,Once,(3) before, after 表示时间的先后 e.g. I found his pen he had l
6、eft.,after,真题演练,1. A dozen ideas were considered _the architect decided on the design of the building. （2006上海） A. because B. before C. whether D. unless,两种since的句型,since： . 主句用现在完成时（或现在完成进行时）时，从句中用一般过去时 e.g. Ive lived here I came to Beijing. . It is (has been)+ since +一般过去时 five years I began to le
7、arn English.,“自以 来”,since,It is,since,扩展练习,1. That was really a splendid evening. Its been years _ I enjoyed myself so much. when B. that C. before D. since 2. They _ friends since they met in Shanghai. A. have made B. have become C. have been D. have turned,2.条件状语从句,逻辑关系： 引导词： e.g. You will pass th
8、e exam you work hard. = You will not pass the exam you dont work hard.,假设, if, unless (if not),not,unless,if, 在条件下：as long as e.g. I get my fathers permission, Ill go!,As long as,条件状语从句题的破题方法,1. 读题，确认从句和主句 2. 分析从句和主句之间的逻辑关系（正面条件/反面条件） 3. 根据逻辑关系选择合适的引导词 正面条件：if, as long as 反面条件：if not, unless,正面条件,真题
9、演练,1. Small sailboats can easily turn over in the water _ they are not managed carefully. （2007上海） A. though B. before C. until D. if,2. _ there is a snowstorm or some other bad weather, the mail always comes on time. （2007上海春季） A. Because B. If C. When D. Unless,反面条件,3. 地点状语从句,常用引导词: _ 特殊引导词: _ _ _
10、, Air will be heavily polluted there are factories. you go, you should work hard. Do you know I can buy a second-hand computer? He follows me I go.,where,wherever,anywhere,everywhere,where,Wherever,anywhere,everywhere,Where there is a will, there is a way. _ 无论你去哪里, 我都去。 _,Wherever you go, I go too,
11、有志者事竟成。,真题演练,4. 原因状语从句,(1) 引导原因状语从句的连词有 _ _ _ _ (2) because, since, as, for 用法比较： because: e.g. -Why are you late? - Because there is a traffic jam.,because,since,as,now that,语气最强，回答why时用because，所表示的是直接理由，因果关系不能同so连用。,since/ now that: e.g. Since you have got enough money with you now, you can come a
12、nd buy it next time. as: e.g. As he had been ready for the worst, he was not disappointed at the result.,“既然” 表对方已知的事实或理由，常放在句首。,“由于.” 语气较弱，较口语化，表明显的原因或已知的事实，常放在句首。,for: e.g. It must have rained last night, for the ground is wet.,语气最弱，不能放在句首。,_ everybody knows about it, I dont want to talk any more. （2009上海） A. For B. Even C. Since D. However,真题演练,状语从句,敬请期待：,
