初中英语复习之状语从句.ppt

1、英语语法状语从句状语从句的分类状语从句的分类时间状语从句时间状语从句WhenIgothome,Peteriscooking.条件状语从句条件状语从句Ifwecanchangeourthoughts,wecanchangetheworld.让步状语从句让步状语从句Althoughtheworldisfullofsuffering,theycanalwaysbeovercome.原因状语从句原因状语从句Peoplewithgoalssucceedbecausetheyknowwheretheyaregoing.1.时间状语从句时间状语从句按照引导词分类：按照引导词分类：When,while,as：

2、当：当时，在时，在的同时的同时When/As/Whilehewaseatinghisbreakfast,heheardthedoorbell.Since：自：自以来以来IthasbeentwoyearssinceIcametoBeijing.从句动词为非延续性动词从句动词为非延续性动词 whenTheboycriedwhenhesawhismother.从句动词为延续性动词从句动词为延续性动词 while,as,when均可均可while强调强调“在在的同时的同时”as强调强调“伴随伴随”的状态的状态TomfellasleepwhileJerrywasgivingalecture辨析：辨析：w

3、hen/while/as时间状语从句的破题方法时间状语从句的破题方法同时同时while伴随伴随as3.3.判断两个动作在时间上的关系判断两个动作在时间上的关系非延续性动词非延续性动词when1.1.读题，寻找时间线索读题，寻找时间线索2.2.判断主句和从句动作的延续性判断主句和从句动作的延续性真题演练真题演练（2007上海）上海）Hetransplantedthelittletreetothegarden_itwasthebesttimeforit.A.whereB.whenC.thatD.until扩展练习扩展练习（2008上海）上海）AreyoureadyforSpain?Yes.Iwan

4、tthegirlstoexperiencethat_theyareyoung.A.while B.untilC.ifD.before其他引导词：其他引导词：（1）until/till延续性动词延续性动词+肯定语气：到肯定语气：到为止为止例：例：Walktillyoucometoawhitehouse.非延续性动词非延续性动词+否定语气：到否定语气：到才开始才开始例：例：Wedidntbeginourdiscussionuntilhecameback.是是非非是是非非真题演练真题演练（2003上海）上海）Agoodstorytellermustbeabletoholdhislistenerscu

5、riosity_hereachestheendofthestory.A.when B.unlessC.afterD.until扩展练习扩展练习（2000上海）上海）Myuncle_untilhewasforty-five.A.marriedB.didntgetmarriedC.wasnotmarryingD.wouldmarry（2）once,atthemoment,assoonas例：例：Oncehegoes,wecancleanup.（3）before和和after表示表示时间的先后的先后顺序序例：例：Ifoundhispenafterhehasleft.真题演练真题演练（2006上海）上

6、海）Adozenideaswereconsidered_thearchitectdecidedonthedesignofthebuilding.A.becauseB.beforeC.whetherD.unless辨析：两种辨析：两种since的句型的句型（1）Itbetimesince+非延续性动词非延续性动词例：例：TheyhavebeenfriendssincetheymetforthefirsttimeinLondon.解释：主句的动作从解释：主句的动作从sincesince的那一刻持续的那一刻持续到现在（有到现在（有已经很长时间了）已经很长时间了）（2）Itbetimesince+延续

7、性动词延续性动词例：例：IhavelivedinBeijingsinceIworkedinShanghai.解释：主句的动作从解释：主句的动作从sincesince引导的从句中的持引导的从句中的持续性动作结束时持续到现在（没有续性动作结束时持续到现在（没有已经已经很长时间了）很长时间了）扩展练习扩展练习Thatwasreallyasplendidevening.Itsbeenyears_Ienjoyedmyselfsomuch.A.whenB.thatC.beforeD.since1.1.逻辑推理：没有逻辑推理：没有已经很长时间了已经很长时间了2.It be since+2.It be sin

8、ce+延续性动词延续性动词选选D DThey_friendssincetheymetinShanghai.A.havemadeB.havebecomeC.havebeenD.haveturned1.since+1.since+非延续性动词非延续性动词主句的动作延续至今主句的动作延续至今2.2.选择四个选项中的延续性动词选择四个选项中的延续性动词选选C C2.条件状语从句条件状语从句逻辑关系：假设逻辑关系：假设引导词：引导词：（1）假如：）假如：if,unless(ifnot)例：例：Youwillnotpasstheexamunlessyouworkhard（你不会通过考试，除非你努力学习）（

9、你不会通过考试，除非你努力学习）=Youwillnotpasstheexamifyoudontworkhard（如果你努力学习，你就会通过考试）（如果你努力学习，你就会通过考试）（2）在）在条件下：条件下：incase,onconditionthat,provided(that),supposing,suppose(that),aslongas例例:ProvidingIgetmyfatherspermission,Illgo!（只要得到父亲的同意，我就去）（只要得到父亲的同意，我就去）条件状语从句题的破题方法条件状语从句题的破题方法1.读题，确认从句和主句读题，确认从句和主句2.分析从句和主句

10、之间的逻辑关系（正分析从句和主句之间的逻辑关系（正面条件面条件/反面条件）反面条件）3.根据逻辑关系选择合适的引导词根据逻辑关系选择合适的引导词正面条件：正面条件：if,incase,onconditionthat,providing(that),supposing,suppose(that),aslongas反面条件：反面条件：ifnot,unless正面正面条件条件真题演练真题演练（2007上海）上海）Smallsailboatscaneasilyturnoverinthewater_theyarenotmanagedcarefully.A.thoughB.beforeC.untilD.i

11、f反面条件反面条件扩展练习扩展练习（2007上海春季）上海春季）_thereisasnowstormorsomeotherbadweather,themailalwayscomesontime.A.BecauseB.IfC.WhenD.UnlessWrapUp时间状语从句条件状语从句逻辑关系转折引导词:even if even though although though语气强度依次减弱3.让步状语从句让步状语从句翻翻译“即使下雨，她也是走着去工作即使下雨，她也是走着去工作”强语气气Eventhoughitwasraining,shewalkedtowork弱弱语气气Thoughitwasra

12、ining,shewalkedtowork让步状语从句题的破题方法让步状语从句题的破题方法3.根据根据逻辑关系关系选择合适的引合适的引导词（或（或连接接词）2.分析从句和主句之分析从句和主句之间的的逻辑关系（关系（转折）折）1.读题，确，确认题干句的干句的组成成真题演练真题演练（2006上海春季）上海春季）_mostoftheearthssurfaceiscoveredbywater,freshwaterisveryrareandprecious.A.AsB.OnceC.IfD.Although扩展练习扩展练习（2008上海春季）上海春季）_thisisonlyasmalltown,itscr

13、owdedwithtouristswhocomehereallyearround.A.SinceB.UnlessC.OnceD.AlthoughNomatterwhatyoudo,dowithyourmight.Whateveryoudo,dowithyourmight.（1）nomatter+特殊疑特殊疑问词=特殊疑特殊疑问词+ever表示表示“无论无论”的让步状语从句的让步状语从句真题演练真题演练（2008上海）上海）_wellpreparedyouare,youstillneedalotofluckinmountainclimbing.A.HoweverB.WhateverC.Nomat

14、terD.AlthoughWhatever way in which you prepareNo matter how well prepared you areAlthough you prepare yourself very well_,Ihavetoputitawayandfocusmyattentiononstudythisweek.A.HoweverthestoryisamusingB.NomatteramusingthestoryisC.HoweveramusingthestoryisD.Nomatterhowthestoryisamusing（2）Whether.or.有有选择

15、范范围Ishallgo,whetheryoucomewithmeorstayathome.真题演练真题演练（2003上海）上海）Dad,Ivefinishedmyassignment.Good,and_youplayorwatchTV,youmustntdisturbme.A.wheneverB.whetherC.whateverD.nomatterWhatever you do.Whatever you do.No matter what you do.No matter what you do.WrapUp让步状语从句引导词让步状语从句引导词Although/thoughNomatter/

16、-everWhether.or.4.原因状语从句原因状语从句语气最气最强众所周知的原因；众所周知的原因；“既然既然”Because伴随性的原因伴随性的原因Since，nowthat,inthat语气最弱，不置于句首气最弱，不置于句首AsFor真题演练真题演练（1999上海）上海）_everybodyknowsaboutit,Idontwanttotalkanymore.A.ForB.EvenC.SinceD.However5.目的状语从句目的状语从句常考引常考引导词so that in order thatIn case（以防万一）解释主句动作发生的目的解释主句动作发生的目的真题演练真题演练（2000上海）上海）Ishallstayinthehotelallday_thereisnewsofthemissingchild.A.incaseB.nomatterC.inanycaseD.eversince扩展练习扩展练习（2008上海春季）上海春季）Pleaseremindmeofthemeetingagaintomorrow_Iforget.A.thoughB.sothatC.incas