1、l时间状语从句的引导词时间状语从句的引导词 常用引导词：when,while,as,before,after,since,until,as soon as等等l特殊引导词：the moment,every time,hardlywhen,no soonerthan等等 1)_he comes here tomorrow,I will call you.2)She sang _she worked.3)_he was walking in the street,he met Tim.4)They were picking apples,_ the girls were singing happi
2、ly.BCA/BA当谓语动词是短暂性动作时当谓语动词是短暂性动作时,前只用前只用when,不用不用while一边一边一边一边,随着随着while作为并列连词，作为并列连词，意为意为“而，却而，却”，表示对比，表示对比A.While B.when C.as1)他一边开车，一边唱歌。他一边开车，一边唱歌。(as)2)12岁的时候，他学习英语。岁的时候，他学习英语。(when/while)3)我喜欢茶，而他喜欢咖啡。我喜欢茶，而他喜欢咖啡。(while)Turn them to EnglishHe learned English when/while he was 12 years old.I li
3、ke tea while she likes coffee.He drives as he sings.时间状语从句引导词时间状语从句引导词when1.Im watching TV when the phone rang._ be doing sth when _ be about to do sth when _2.Why do you want to find another job when you have such a good one._3.Whenever he is in trouble,he turns to me for help.whenever+从句：从句：_ Ever
4、y time he is in trouble,he turns to me for help.在在的时候的时候正在做正在做sth就在这时就在这时正要做正要做sth就在这时就在这时既然，在既然，在情况下情况下无论什么时候他遇到困难就会求助于我。无论什么时候他遇到困难就会求助于我。whileStrike while the iron is hot._Im cooking while my brother is watching TV._While I accept that he is not excellent,I really like the person._While I am here
5、,I wont let anyone hurt you._趁着，在趁着，在时候时候而而(对比，转折）对比，转折）虽然，尽管虽然，尽管只要只要before Ill do it before I forget.在在.以前以前 He rushed out before I could stop him.没来得及没来得及 It will be/wont be/was before 过了过了/要过要过 才才 要过一年我们才能见面要过一年我们才能见面 不知不觉不知不觉 before I realize/know it Time is up before we know it.It will be a ye
6、ar before we meet.1.It wont be long before he finishes his writing.2.We had been on ship for four days and four nights before we saw the land.3.He hadnt finished cleaning his room before he felt tired.4.Before I could get in a word,he laughed at me.不久他就会完成他的写作不久他就会完成他的写作我们在船上待了四天四夜才看到陆地我们在船上待了四天四夜才看
7、到陆地我还没来得及说一句话他就开始嘲笑我。我还没来得及说一句话他就开始嘲笑我。till/until till/until 用于肯定句用于肯定句 “一直到一直到”否定句中否定句中 “直到直到才才”直到现在我才认识到英语的重要性直到现在我才认识到英语的重要性notuntil 强调结构强调结构_将句子改成强调句将句子改成强调句_notuntil位于句首时的倒装位于句首时的倒装Not until now _ _ _ the importance of English.I didnt realize the importance of English until now.It is/was not un
8、til+时间时间+句子剩余（肯定）句子剩余（肯定）It was not until now that I realize the importance of EnglishdidIrealizesince It is/has been+一段时间一段时间+since 瞬间动词：直译瞬间动词：直译延续性动词：反译延续性动词：反译 It is ten years since I came here._It is ten years since I lived here._我来这已经十年了。我来这已经十年了。我离开这已经十年了。我离开这已经十年了。1.Take the medicine _you go
9、 to bed.2.They must stay in school _they are sixteen.3.They walked out of the room _the meeting was over.对比训练对比训练 1 1 until,before,afterbeforeuntilafter4.Stay in bed _you feel much better.5.It is five years _we started to learn English.6.I have lived in London _ I was born.7.The train had left _ I a
10、rrived at the station.对比训练对比训练 2 2 Since,until,beforeuntilsincesincebefore1)As soon as/the moment she got home,she began to cook.2)As soon as/the moment he has a flu,he is sent to hospital.Can you translate it?一一就就as soon as/the moment她一到家就开始做饭。她一到家就开始做饭。一得流感，他就被送到医院了。一得流感，他就被送到医院了。1.The children ra
11、n away from the orchard(果园果园)_ they saw the dog.a.for a moment b.the moment c.at the moment d.for the moment e.as soon asMake a choice1.We were swimming in the lake _ suddenly the storm started.2._ I agree with him this time,I do not like the person in fact.3.Did you remember to give Mary the money?
12、Yes.I gave it to her _ I saw her.4.It is almost five years _ we saw each other last time.5.Why didnt you tell him about the meeting?He rushed out of the room _ I could say a word.whenWhilethe momentbeforebeforeFamous sayingLets enjoy!l1.When in Rome,do as Romans do.l2.While there is life,there is hope.l3.After rain comes sunshine.入乡随俗。入乡随俗。有生命就有希望。有生命就有希望。留得青山在，不怕没柴烧。留得青山在，不怕没柴烧。风雨过后见彩虹。风雨过后见彩虹。Homework:CompositionWrite a composition about one day of your daily life by using when,while,whenever,since,after,before,as soon as,the moment,etc.
