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1、高中英语状语从句用法解析一、 定义：在句中作状语的从句是状语从句，修饰主句中的动词、形容词或副词等。状语从句由从属连词引导，从属连词在句中不充当句子成分，只起连接作用，状语从句放在句首时，要用逗号，放在句尾时不用。二、 分类根据意义上的不同，状语从句可分为：时间状语从句地点状语从句原因状语从句目的状语从句条件状语从句结果状语从句让步状语从句方式状语从句比较状语从句三、 时间状语从句（一）引导 时间状语从句的连词有：as, when(whenever), before, after, as soon as, until(till), since, every time, once.（二）、 “a
2、s” as, when, while都有“当的时候”，可以互用When she was a child.While she was a child. She Lived in Paris.As she was a child.as有“一边一边”的意思He sang as he walked.“when”When the clock struck twelve, all the lights went out.I was sleeping when she came in. 动补When we arrived at the station, the train had left.“while”
3、主、从句动作或状态同时发生。用while引导的从句用延续性动词，常表示较长的时间或一个过程。While we were having supper, all the lights went out.Please keep quiet while others are studying.While I was writing letters last night, he was watching TV. when, while并列连问。when和while都可用作并列连问，连接并列分句。When表示“就在的时候”, while意反而，可是，表示转折。One evening Beethoven w
4、as walking in a street, when he suddenly stopped outside a little house.并列连词引导并列句，意思是就在那时。（三）、主句是一般将来时，时间状语从句用一般现在时表将来，主句是过去将来时，从句用一般过去时表示过去将来时，主句是一般过去时，从句用一般过去时。1. I ll call you when I get there.2. They said they would leave when they got the new.3. They left as soon as they got the new.Whenever 无论
5、什么时候，随时1. Whenever someone throws in some rubbish, the truck produces a piece of music.每当有人扔进一些垃圾时，它（汽车）就放一段音乐。2. Whenever we re in trouble, they will help us.3. I go to the theatre, whenever I am free.4. Come and see me whenever you want to.你随时来看我。till和until(表示“直到”)句首多用until1、在肯定句中表示“直到为止”，主句谓语动词要用
6、延续性动词。I was waiting until/till he arrived.2、在否定句中表示“直到才”主句谓语动词常用终止性动词，这时until和till常被before替换。I didn t leave till/until she came back.since: 主句用完成时，从句用一般过去时，since引导的从句间或可用现在完成时。It is two years since I have studied English.1. We have known each other since we were children.2. We have been friends (eve
7、r since) since we met at school.3. It is (一段时间)+since+一般过去时态句子。It is two years since my sister married.(一段时间) have/has passed since +一般过去时态句子Two sisters have/has passed since my sister married.Since+时间点1. I have been at home since three o clock this afternoon.2. Maria has been in China since two yea
8、rs ago.*every time, each time, next timeEvery time you get back at night, you drop your boots on the floor.Every time I catch cold, I have pain in my back.(every time 分写不可以合写) 比较everyday (adj) 日常的，普通的every day 是名词短语，每天，天天Next time I go there, I will visit them.* once 一旦就Once you begin, you must go o
9、n. 你一开了头，就应该继续下去。四、 地点状语从句地点状语从句用where, wherever引导We should go where the people need us.我们应该去人民需要我们的地方。Where there is a will, there is a way.有志者，事竟成。Wherever they went, they received a worm welcome.无论他们走到哪儿都受到热烈欢迎。She follow him whose he goes. 他无论到哪里她总跟着。五、 原因状语从句原因状语从句用because(因为)，since(既然), as(由于)
10、引导1、 字母由多到少，语气由强到弱。2、 由why提问必须用because回答。Since, as不回答why的提问，而且从句一般放在句首，because一般放在主句之后。3、 before of +名词Because of the rain, we didn t go to the park.4、 because 和so不可连用，只能选其一。（另有although, but）Why didn t he come to school? Because he was ill.Since I must die, I must. 既然我一定要死，我一定这样做。Since a lot of peop
11、le make mistakes in life, Mr Smith wanted to give John a Chance.5、 for并列连词，不能放在句首，主要放在两个并列句之间。For所提供的理由为一个补充说明，而且前面常有逗号隔开。The days we short, for it is December now.*改错 Because he is ill is the reason why he can t come.(Because改为that)六、 目的状语从句目的状语从句用so(常用于口语), that, so that, in order that引导目的状语从句的谓语常
12、含有may, might, can, could, should, would等情态动词。1. We ll sit never to the front so we can hear better.2. He studied hard so that he might succeed.他努力学习，以便成功。3. I ll speak slowly so that you can take notes.我慢慢讲，以便你们能做笔记。4. They hurried to the station in order that they could catch the train.他们急忙赶往火车站，以便
13、能赶上火车。5.I took a taxi so that I could get there earlier.6.I m going to the lecture early so that I may get a good seat.我打算早些去听讲座，以便找个好座位。七、 条件状语从句条件状语从句由if, unless, (so) as long as(只需)引导在条件状语从句中要用一般时表示将来时（与时间状语从句相同）We will miss the train if you don t hurry.He said we would miss the train if we didn
14、t hurry.You will fail the exam unless you study hard. (if you don t study hard)He won t come unless he is invited. (if he isn t invited)Eat less food unless you want to become fatter. (if you don t want to become better)As long as you are not afraid of difficulties, you are sure to succeed.As long a
15、s you don t lose heart, you will succeed.八、 结果状语从句结果状语从句由suchthat, so.that, so that, that 引导1. such that 的常用句型such +a/an +形容词+可数名词单数+thatsuch +形容词+可数名词单数+thatSuch+形容词+可数名词复数（不可数名词）+that注意so many (much, few, little) +名词，such a lot of (或lots of)+名词是惯用法，不可乱用。She is such a beautiful girl that we all like her.They were such beautiful flower that we bought home.It was such delicious food that they ate it up.2. so+形容词或副词+thatso+形容词+a/an+可数名词单数+thatHe is so rich that he can buy l
