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1、,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, Ill 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,状
2、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 sothat 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
3、it hits the ground. 这球着地后蹦得很高。 Wait until youre called. 你等着叫你吧！,When he came, I was cooking. 他来时，我在做饭。 Ill 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 havent 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,当时,Are y
4、ou going to be a sailor when you leave school?,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
5、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 dont like art, I find his work impressive. (while=_) While there is life there is hope. (while=_),when,although,as long as,but, as : 当时；一边
6、一边；随着,某事一发生，另一事立即发生 两个动作同时发生,As the day went on, the weather got worse.,As the captain passed me, I asked him whether there was any hope of saving the ship., 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 在前
7、 It will be half a year before I come back. It wont be half a year before we meet again. We sailed four days and nights before we saw the land. We hadnt run a mile before he felt tired.,肯定句 “ 才” 否定句 “就”,it will be +一段时间 before.多久之后才.,it wont be +一段时间 before.不久就.,till, until和notuntil： 1.until/till引导时
8、间状语从句用于肯定句时，主句的动词是延续性动词，表示动作或状态一直持续到until/till所表示的时间，意为“某动作一直延续到某时间点才停止”。如： We waited until he came. 2用于否定句时，主句谓语动词是非延续性动词，从句为肯定，意为“某动作直到某时间才开始”。如He wont go to bed till/until she returns.,3till不可以置于句首，而until可以。如： Until you told me I had no idea of it.,练一练,1. _ he comes here tomorrow, I will call you
9、. 2. _ he was walking in the street, he met Tim. 3. She sang _she worked. 4. There was an applause _she appeared on the stage.,When,While/When,as,as soon as,5.It wont be long _he finishes his writing. 6._ he had finished his work, he left there. 7.It is two years _he came here. 8. _she told me, I ha
10、d no idea of what they had said .,before,After,since,Every time/each time,Until,2. 地点状语从句 地点状语从句由 where, wherever 等引导。例如： You can take a walk wherever you like to. -Mom, what did your doctor say? - He advised me to live where the air is fresher?,3. 原因状语从句 原因状语从句通常由because, as, since, now that, consi
11、dering (that), seeing (that)等词引导。 because语气较强，用以回答why问句 as语气较弱，较口语化，所表示的原因较明显。 since语气较弱，常表对方已知的事实，相当于汉语的“既然”。,1. _he was ill, he didnt go to school. 2._ you do not understand, I will explain again. 3. As she was late for class, she had to say sorry. 4. He must be ill, _he is absent today.,Because,S
12、ince,Now that,for,练一练,6. I eat potatoes _I like them. 我吃土豆是因为我喜欢土豆。 7. _I didnt know the way, I asked a policeman. 我由于不知道路，因而问警察。 8. _you wont help me, Ill ask someone else. 你既然不帮我，那我就请别人帮我。,because,As,Since,4. 结果状语从句 结果状语从句常用so that, such that等关联词引导。e.g. He is so young that he cant go to work. 他如此小
13、以致于他不能上班。 He got so little pay that his family had to live on welfare money. 他工资很少，他的家人不得不靠救济金生活。 Its such a good chance that we mustnt miss it. 机会这样好，我们决不能失掉。,1. It is _good a story that Ill never forget it. 2. It is _ a good story that Ill never forget it.,so,such,练一练,5. 目的状语从句 目的状语从句常由so that, in
14、 order that等词引导，目的状语从句常用助动词may（might）, shall（should）, will（would）, can (could)。目的状语从句常放于主句之后，例： Speak clearly so that they may understand you. 你要讲得清楚，他们才听得懂。 He spoke slowly in order that everyone should understand. 他讲得很慢以便人人能听懂。,They set out early _ they might arrive there in time. Take your rainco
15、at _it should rain. The boy hid himself behind the tree _his father should see him.,so that (in order that),in case,in case/for fear that,练一练,4. Id like to arrive 20 minutes early _ I can have time for a cup of tea. A. as soon as B. as a result C. in case D. so that 5. Youd better take something to read when you go to see the doctor _ you have to wait. A. even if B. as if C. in case D. in order that,6. 条件状语从句 条件状语从句表示条件，关联词常用if或unless, as (so) long as. if , once, as/so long as，as far as，unles
