原因状语从句语法讲解-3页精选文档.doc

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1、如有侵权，请联系网站删除，仅供学习与交流原因状语从句语法讲解【精品文档】第 3 页A、引导原因状语从句的连词原因状语从句一般由从属连词because,as,since，nowthat引导。B、because,as,since和nowthat的区别：1、because“因为”，表示直接的原因，语气最强。1）why提问的句子，必须用because回答。2）because的从句常放在主句之后。3）because不能与so连用。4）because+从句；becauseof+名词短语ImissedthetrainbecauseIgotuplate.Hewasangrynotbecausewewerela

2、tebutbecausewemadeanoise.-Whydidnthecomeyesterday?-Becausehewasill.2、as“因为”，语气较弱，一般放在主句前，中间用逗号隔开，表示的是明显的原因。Ashewasnotwell,Idecidedtogotherewithouthim.Asitwasraininghard,wehadtobeindoors.3、since/nowthat“既然”，一般放在主句前，中间用逗号隔开，表示的是明显的原因或众所周知的事实。Since/Nowthatthismethoddoesntwork,letstryanother.Since/Nowth

3、atyoufeelill,youdbetternotgotowork.C、for引导的并列句与原因状语从句的辨析并列连词for“因为”，引导的不是从句，而是并列分句，只能放在主句之后，不能放在句首，常用逗号把它和前面的分句隔开。对主句补充说明理由或推断原因。Itrainedlastnight,forthegroundiswet.?Shemusthavegoneoutearly,forshehadnotcomeforbreakfast.Exercise:一、填入恰当的连词1.Ididntgotoschoolyesterday_Iwasill.2._everybodyishere,letsbegi

4、nourmeeting.3._youareinpoorhealth,youshouldnotstayuplate.4.Iaskedhertostaytotea,_Ihadsomethingtotellher.5._allthepassengersarehere,whydontwestartatonce?6.Billwontmakeanyprogress_hedoesntstudyharderthanbefore.7.Hemighthavegonetobed,_thelightwentout.二、改写句子,保持句意不变1)Theshipchangeditscoursebecausetherewa

5、sastorm.Theshipchangeditscourse_.2)Becausehewasill,hedidntgotoschool.?Hewasill,_hedidntgotoschool.3)Hecouldntwalkbecausehislegwasbroken.Hecouldntwalk_his_leg.4)Icamebackbecauseitwasrainingheavily.?Icameback_the_rain.三、课堂小结：_四、回家作业：一、填入恰当的连词1._youdonotunderstand,Iwillexplainagain.2._Janewastheoldesti

6、nthisfamily,shehadtolookaftertheothers.3.Hemustbeill,_heisabsenttoday.4.Theteachermustbestrictwithyou_theywantyoutomakegreatprogress.5._yourfatheriswellagain,younolongerhaveanythingtoworryabout.6.Thedaybreaks,_thebirdsaresinging.7._youareill,youdbettergotoseethedoctor.8._shewaslateforclass,shehadtos

7、aysorry.二、选择恰当的答案1.Themancantgetonthebus_thereisnoroomonit.?A.though?B.because?C.until?Dsothat2._herdaughterhadntcomeback,_shelookedworried.?A.Because,/?B.Because,so?C.Though,but?D.Though,/3._youvegotachance,youmightmakefulluseofit.?A.Nowthat?B.After?C.Although?D.Assoonas4.Hefounditdifficulttoread,_

8、hiseyesightwasbeginningtofail.?A.and?B.for?C.but?D.or5.Amancannotsmilelikeachild,_achildsmileswithhiseyes,whileamansmileswithhislipsalone.?A.so?B.but?C.and?D.for五、学生反馈：（在完成回家作业的过程中存在的问题）_六、教师反馈：（在批改学生回家作业中发现的问题）_Keys：A、引导原因状语从句的连词：because,as,since，nowthatB、because,as,since和nowthat的区别：1、because：“因为”，

9、表示直接的原因，语气最强。1）why提问的句子，必须用because回答。2）because的从句常放在主句之后。3）because不能与so连用。4）because+从句；becauseof+名词短语2、as：“因为”，语气较弱，一般放在主句前，中间用逗号隔开，表示的是明显的原因。3、since/nowthat：“既然”，一般放在主句前，中间用逗号隔开，表示的是明显的原因或众所周知的事实。C、for引导的并列句与原因状语从句的辨析：并列连词for“因为”，引导的不是从句，而是并列分句，只能放在主句之后，不能放在句首，常用逗号把它和前面的分句隔开。对主句补充说明理由或推断原因。课堂练习：一、1.because?2.Since?3.As?4.because?5.Since?6.because?7.for二、1.becauseofthestorm?2.so?3.becauseofbroken?4.becauseofheavy回家作业：一、1.since?2.As?3.for?4.because?5.Since?6.for?7.Since?8.As二、1.B?2.A?3.A?4.B?5.D