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1、MeaningoftheifclauseVerbformintheifclauseVerbformintheresultclauseuntrueinthepresentsimplepastwould/should+simpleformuntrueinthepastpastperfectwould/shouldhave+-eduntrueinthefuturewereto+simpleformwould/should+simpleformshould+simpleformwould/should+simpleformsimplepastwould/should+simpleformUnreal
2、conditionalsentence非真实条件句MixedConditionals(复合条件句)Sometimesunrealconditionalsentencesaremixed.Thismeansthatthetimeintheif-clauseisnotthesameasthetimeintheresultclause.PAST+PRESENTIfIhadwonthelottery,Iwouldberich.PAST+FutureIfshehadsignedupfortheskitriplastweek,shewouldjoinustomorrow.PRESENT+PASTIfSa
3、mspokeRussian,hewouldhavetranslatedtheletterforyou.PracticeIB:IwishIcouldflyaspaceship.A:Whatdoyouwishyoucoulddo?A:Whatwouldyoudoifyoucouldflyaspaceship?B:IfIcouldflyaspaceship,Iwouldvisitthemoon.PracticeIPractice2A:WhyisTomdoingpoorlyatschool?B:Becausehehasbeeninattentiveinclass.B:No,hewouldn’t.A:
4、Ifhehadbeenattentiveinclass,hewouldnotbedoingsopoorlyatschool,wouldhe?PracticeII1.Practice2B:She’sbeenspeakingFrenchsinceshewasfive,youknow.B:No,shewouldn’t.A:Ifshehadn’t,shewouldn’tbeabletospeakitfluently,wouldshe?2.A:CanJoanspeakFrench?Yes,shecan,andquitefluently,too.Practice3A:Hemadealotofmistak
5、esinhislastdictation,Ihear.A:Ifhehadbeencareful,hewouldn’thavemadesomanymistakes,I’msure.B:No,hewouldn’t.B:Yes,hedid.Hewasn’tcareful.1.PracticeIIIPractice3A:TheroadwasclosedtotrafficlastWednesday.Why?A:Isee.Soiftherehadn’tbeensuchaheavyfallofsnow,theroadwouldn’thavebeenclosed.B:No.That’sright.B:Bec
6、ausetherewasaheavyfallofsnowthedaybefore.2.DialogueQuestionsBrowsethroughthetext,trytoanswerfollowingquestions.ChangestoFamilyLife1.What’soneofthemaincausesoftheriseinjuvenilecrime?2.Inwhatwayorwaysisfamilylifenowdifferentfromthatofthirtyorfortyyearsago?3.Whatdoesachildneedmostintheprocessofgrowing
7、up?4.IsTVanidealsubstituteparent?Whyorwhynot?LanguagePointsbreakup破碎；分手；（婚姻关系）破裂e.g.:Therewasadangeroftheshipbreakingupcompletely.Mygirlfriendhadbrokenupwithme.breakupn.:theendtoarelationship,esp.marriage*R
