初中状语从句讲练课件.ppt
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1、状状 语语 从从 句句讲讲 练练 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。一些从属连词。 v例:v When you cross the road, you must be careful. 当你过马路时要小心。(when是从属连词)v 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).v If she asks me, Ill tell her. 她如果问我,我就告诉她。(if是从属连词)v You look as if you n
2、eed a rest.v 你像是需要休息似的。(as if是从属连词).状语从句状语从句状语从句的种类状语从句的种类1、时间状语从句 when, while, as soon as, since, until, before, after2、条件状语从句 if 3、结果状语从句 sothat4、比较状语从句 than5、原因状语从句 because6、让步状语从句 although, though7、地点状语从句 where1. 1. 时间状语从句时间状语从句v引导时间状语从句的关联词常有:after, before, when, while, whenever, as soon as, as
3、, since, until 等。v例:v The ball goes up very high after it hits the ground. 这球着地后蹦得很高。v 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
4、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持续性非持续性动词都可以当当时时Are you going to be a sailor when you leave school? while /when辨析辨析vwhen/while+doingvWhen/while reading,he fell asleep.vwhen+终止性、延续性动词终止性、延续性动词vwhile+延续性动词延续性动词vWhen the teacher came in,I was sleeping.v=While /When I was sleeping, the tea
5、cher came in.vwhen (就在这时就在这时)vI 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 dont like art, I find his work impressive. (while=_)Whi
6、le there is life there is hope. (while=_)whenalthoughas long as but as : 当时;一边一边;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 gotworse.As the captain passed me, I askedhim 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
7、.一样3. As she was late for class, she had to say sorry. 由于 before 在前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 wo
8、nt be +一段时间 before.不久就.till, until和notuntil:1.until/till引导时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 id
9、ea of it.1. _ he comes here tomorrow, I will call you. 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.WhenWhile/Whenasas soon as5.It wont be long _he finishes his writing.6._ he had finished his work, he left there.7.It is t
10、wo years _he came here.8. _she told me, I had no idea of what they had said .beforeAftersinceEvery time/each timeUntil2. 地点状语从句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. 3. 原因状语从句
11、原因状语从句v原因状语从句通常由because, as, since, now that, considering (that), seeing (that)等词引导。v because语气较强,用以回答why问句v as语气较弱,较口语化,所表示的原因较明显。v 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. He must be ill, _he is absent today.BecauseSin
12、cefor6. 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。becauseAsSince4. 4. 结果状语从句结果状语从句v结果状语从句常用so that, such that等关联词引导。e.g.v He is so young that he cant go to work. 他如此小以致于他不能上班。vHe
13、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。vIts 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.sosuch 5. 5. 目的状语从句目的状语从句v目的状语从句常由so that, in order that等
14、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:v Speak clearly so that they may understand you. 你要讲得清楚,他们才听得懂。v He spoke slowly in order that everyone should understand. 他讲得很慢以便人人能听懂。1.They set out early _ they might arrive there in time. 2.Take your raincoat _it
15、should rain.3.The boy hid himself behind the tree _his father should see him.so that (in order that)in casein case/for fear that4. 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 that5. Youd better take something to read when you g
16、o to see the doctor _ you have to wait. A. even if B. as if C. in case D. in order that 6. 6. 条件状语从句条件状语从句v条件状语从句表示条件,关联词常用if或unless, as (so) long as. 等。等。vIf it snows tomorrow, we will build a snowman. 明天如果下雪,我们就堆雪人。vYoull catch a cold unless you put on your coat. 你会感冒的除非你穿上大衣。vHe will do anything
17、as long as it is interesting. 只要有趣,他什么都愿意干。1. _ you touch an English person, you should say “sorry”.2. _ they are dirty, certain seas are not able to clean themselves.3. _we dont lose heart, well find a way to overcome the difficulty.4. _I know you shouldnt have any problem there.IfOnceAs long asAs
18、far as5. Dont touch anything _ yourteacher tells you to.unless 7. 7. 让步状语从句让步状语从句v让步状语从句,表示“虽然,尽管,即使”等概念,常用的关联词有:though, although, even though等。v Though he was ill, he was still working. 他虽然有病,但仍然继续工作。v Although it is difficult, we shall do it. 此事虽难,但我们还是要做。v Even though you say so, I do not believe
19、 it. 即使你这样说,我也不信。 注: v though和although可以互换,只是although比较正式。v though不可以与连词but连用,但可以与yet,still连用,例:v Though he worked hard, he couldnt pass the exam. 虽然他很努力,但还是没通过考试。 1. _he is old ,he works hard.2. _you say so,I dont believe it. 3. Smart _ he is ,he doesnt study hard. 4. The old tower must be saved, _
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