时间状语从句ppt.ppt

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1、关于时间状语从句PPT现在学习的是第1页，共29页 1.Adverbial Clauses of Time:（时间状语从句）Different Kinds of Adverbial Clauses:2.Adverbial Clauses of Reason(原因状语从句）3.Adverbial Clauses of Conditions(条件状语从句）4.Adverbial Clauses of Place(地点状语从句）5.Adverbial Clauses of Purpose(目的状语从句）6.Adverbial Clauses of Result（结果状语从句）7.Adverbial

2、Clauses of Comparison（比较）8.Adverbial Clauses of Concession(让步）9.Adverb Clauses of Manner(方式状语从句 )现在学习的是第2页，共29页I.时间状语从句时间状语从句:when,while,as,after,before,since,until/till,as soon as,hardly/scarcelywhen,no soonerthan,every time,each time,the moment,the minute,the second,by the time,immediately.现在学习的是第

3、3页，共29页一、when/while/asWhen+(1)延续性动词e.g.WhenIwasyoung,Ilikeddancing.(2)瞬间性动词(不能用不能用while）e.g.Itwassnowingwhenwegottotheairport(3)表示“这时”“正在这时候”e.g.Iwaswalkingonthestreetwhensuddenlysomeonepattedmeontheshoulder.(4)主从句动作先后发生(不能用不能用while）e.g.WhenIgottothecinema,thefilmhadalreadybegun.现在学习的是第4页，共29页While+

4、(1)延续性动词e.g.WhileIslept,athiefbrokein.(2)表示两种情况对比，“然而”“而”e.g.Theyweresurprisedthatachildshouldworkouttheproblemwhiletheythemselvescouldnt.(3)表示“趁着时候”(强调主从句动作同时发生).e.g.Strikewhiletheironishot.现在学习的是第5页，共29页As侧重主从句动作同时发生，常译为“一边一边一边一边.”e.g.Thestudentstooknotesastheylistened.)“随着随着”e.g.Astimegoesby,weha

5、vegainedmoreandmoreknowledge.注意若主句谓语是短暂性动作，从句用延续性动词的进行时态表示在一段时间内正在进行的动作时，三者可以互换！When/While/AswewerehavinganEnglishclass,astrangerbrokein.现在学习的是第6页，共29页Practice_lwaswalkingdownthestreet，Isawsomepolicemen_theyheardthenews，theyweresurprisedTheyshoutedslogans_theypassedthesquare.When/While/AsWhenas现在学习的

6、是第7页，共29页二、before常见句型常见句型:Itwillbe+一段时间一段时间+before.Itwas+一段时间一段时间+before.ItwontbelongbeforeItwasntlongbefore肯定句意为肯定句意为“多长时间后才多长时间后才”否定句意为否定句意为“用不了多长时间就用不了多长时间就”Itwillbealongtimebeforewefinishthisdictionary.我们需要很长的时间才把这部词典编译完。Itwasnotlongbeforethethiefwascaught.小偷不久就被抓住了。现在学习的是第8页，共29页beforeItwillbeh

7、alfayearbeforeIcomeback.It wont be half a year before we meetagain.We sailed four days and nights beforewesawtheland.Wehadntrunamilebeforehefelttired.肯定句肯定句 “才才”否定句否定句 “就就”it will be+一段时间一段时间 before.多久之后才多久之后才.it wont be+一段时间一段时间 before.不久就不久就.现在学习的是第9页，共29页1.Scientistssayitmaybefiveorsixyears_itisp

8、ossibletotestthismedicineonhumanpatients.2.Hewastoldthatitwouldbeatleastthreemonths_hecouldrecoverandreturntowork.3.Someonecalledmeinthemiddleofthenight,buttheyhungup_Icouldanswerthephone.beforebeforebefore现在学习的是第10页，共29页三、after例：1、HecametoseemeafterIarrived.2、Immediatelyafterhewashurt,hewastakentot

9、hehospital.现在学习的是第11页，共29页注：before和after引导的状语从句，主从句发生的动作先后顺序很明确，因此after从句中的谓语动词常常使用一般过去时来代替过去完成时。Afterhe(had)finishedhishomework,Tombegantoplaycomputergames.现在学习的是第12页，共29页三Since注意since引导的时间状语从句，主句常用完成时，从句常用一般过去时。Hehaswrittentomefrequentlysincehewasill.句型Itis/hasbeen+一段时间+since，如果从句是延续性动词，,用一般过去时和现在

10、完成时不同。Itis/hasbeentwoyearssincehewasinthearmy.他离开军队两年了。Itis/hasbeentwoyearssincehehasbeeninthearmy.他当兵两年了。现在学习的是第13页，共29页1.-Howlong_theshop_open?-Since1992.(=Since15yearsago)2.-Sincewhen_thecountry_opentointernationaltrade?-1978,Isuppose.3._5years_hegraduatedfromcollege._2years_hesmoked.hasbeenhasbe

11、enItissinceItissince现在学习的是第14页，共29页Practiceitis+时间时间+sincebeforewhenthatItisfiveyears_hefinishedhisresearch.It was five years _he finished hisresearch.It was five years later _he finished hisresearch.Itwas5oclock_hegothome.Itwasat5oclock_hegothome.whenthatsincebeforethat现在学习的是第15页，共29页四、名词词组引导的状语从句四

12、、名词词组引导的状语从句一些表示时间的名词词组,如：themoment,eachtime,everytime,thefirsttime,theyear等,也用于引导时间状语从句，这时它们担当着连接词的功能。_hewenttoShanghai,hepaidavisittohisformerteacherA.ForthefirsttimeB.Thefirsttime_lsawhim,IthoughtofhisfatherA.ThemomentB.AtthemomentThefirsttimeThemomentEachtimehecame,hewouldbringusalotofflowers现在学

13、习的是第16页，共29页-DidyouremembertogiveMarythemoneyyouowedher?-Yes.Igaveittoher_Isawher.themomenttheminutetheinstant现在学习的是第17页，共29页Practice1.WheneverytimeIwasintrouble,hewouldcometohelpme.2.At next time you come,do remember bringyoursonhere.3.ForthefirsttimeImetthegirl,Ifeltinlovewithher.4.Youarewelcometo

14、comebackatanytimeyouwantto.5.AtthelasttimeshesawJames,hewaslyinginbed.语法规则：语法规则：every time,each time,next time,the first time,any time 等名词短语引导状语从句不加介词。等名词短语引导状语从句不加介词。现在学习的是第18页，共29页关连词组hardly/scarcelywhennosoonerthanassoonas三种句子结构表示“一就”。注意：时态assoonas以一般时态代替将来时态nosooner,hardly,scarcely后的句子用过去完成时，tha

15、n/when后的句子用一般过去时。倒装当hardly或nosooner位于句首时，要倒装。五、一五、一就就现在学习的是第19页，共29页我一到达上海就给你打电话。我一到达上海就给你打电话。时态要求：时态要求：改改错错:Ihardlygothomewhenitbegantorain时态要求：时态要求：I will call you as soon as I arrive in Shanghai.had以一般现在时代替将来时以一般现在时代替将来时主句用主句用had done,从句用从句用didno sooner.than,hardly.when,scarcely.when现在学习的是第20页，共2

16、9页HehadhardlyarrivedwhenitbegantosnowHardly_whenitbegantosnowWehadhardlywalkedintothehallwhenthelecturestartedHardly_walkedintothehallwhenthelecturestarted_shegonetosleepthanthetelephonerangoncemore_theboyreachedthedoorthanhecamebackhadhearrivedhadweNosoonerhadNosoonerhad倒装现在学习的是第21页，共29页六、until/til

17、luntil/till“直到止”(肯定句，主句是延续性动词);Illwaiteuntil/tilltheconcertisover(till不能放在句首，但是until了的位置不受限制)notuntil“直到才”hedidntleavetheofficeuntilhefinishedthetask.注意：倒装句、强调句，及位于句首时，只能用until。NotuntilIreturneddidshefinishherhomework.ItwasnotuntilIreturnedhomethatshefinishedherhomework.现在学习的是第22页，共29页1Themeetingdid

18、ntstart_everyonewasthereA.becauseB.untilC.why D.if2Theboy_tobed_hismothercamein.A.wentnot;untilB.didntgo;afterC.went;untilD.didntgo;until现在学习的是第23页，共29页Practice1.MotherwaitedforTomtill/untilfarintothenight.(持续性动词)2.Tomdidntgetbacktill/untileverythingwasallright.(短暂性动词)=_everythingwasallright_.=_ever

19、ythingwasallright_Tomgotback.NotuntildidTomgetbackItwasnotuntilthat现在学习的是第24页，共29页六、bythetime引导的从句Bythetimewegottothestation,thebus_left.Bythetimeyoureceivethisletter,I_leftthiscityformyhometown.hadwillhave现在学习的是第25页，共29页 小结练习小结练习1.They walked out of the room _the meeting was over.2.They must stay i

20、n school _they are sixteen.3.Take the medicine _you go to bed.as soon asby the timebefore现在学习的是第26页，共29页4.I knew nothing about it _he told me.5.It is more than five years _we started to learn English.6._he talked on,he got more and more excited.7.We should strike _the iron is hot.untilsinceAswhile现在

21、学习的是第27页，共29页 1.I was waiting for the bus while I met him.2.While he was doing his homework,I listened to the radio.3.Ill tell you as soon as Ill know.4.We often finish our homework after we go to bed.5.We have been friends after we met at school.6.Jim didnt go to bed since his mother came back.改错：改错：whenwas listening before sinceuntil现在学习的是第28页，共29页感感谢谢大大家家观观看看现在学习的是第29页，共29页