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1、UnderstandingeachotherUnit3GrammarandusageObjectivesTolearntoidentifyanunrealconditionalinasentenceTolearntheformsofunrealconditionalsTolearnwhentousetheunrealconditionalsTolearnhowtousetheunrealconditionals语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语言规则和语法规律。
2、Unrealconditionals虚拟语气Andyouprobablymuchsleepifyounearwhereaweddingreceptionwasbeingheld.如果你住的地方离婚礼现场不远，你很可能睡不好。wouldn’tgetlivedUnrealconditionalsReadthepointsandexamplesonPages40-41carefullytogetageneralideaofunrealconditionals.Pleasepayattentiontothefollowingnotes.英语中的语气分为陈述语气、祈
3、使语气、虚拟语气三类。虚拟语气用来表示说话人的主观愿望或假想，而不表示客观存在的事实，所说的是一个条件，不一定是事实，或与事实相反。虚拟语气通过谓语动词的特殊形式来表示。IfIknewhistelephonenumber,Iwouldtellyou.(事实上我不知道)2)IfIwereyou,Iwouldtakeanumbrella.(事实上我不可能是你)3)Iftherewerenoairorwater,therewouldbenolivingthingsontheearth.(事实上地球上即有空气又有水)我们用虚拟语气陈述现在不真实或想象的情景。Not
4、esWeformunrealpresentconditionalslikethis:If…was/were/did…,…should/would/could/mightdo…假如现在我有更多的时间，我就会学习德语。IfIhadmoretimenow,IwouldstudyGerman.2.要是我象你一样年轻，我就会找时间锻炼。IfIwere/wasyoungasyou,Iwouldfindtimetoexercise.1)would,couldandmightareofteninterchangeable(可互换的),butwithsomedifferen
5、ceinmeaning.would→intention;plancould→ability;possibilitymight→probability2)InwrittenEnglishorinformalsituation,weusuallyusewereinIf-clausesinplaceofwas.However,ineverydayconversation,wasisoftenused.TIP1)IfIhadgotthereearlier,Ishould/couldhavemether.(事实上我去晚了)2)Ifhehadtakenmyadvice
6、,hewouldnothavemadesuchamistake.(事实上没有听)我们用虚拟语气表示想象中发生在过去的动作。Notes3)Ifyouhadrungmeyesterday,Iwouldhavetoldyouwhatweweregoingtodoyesterdayevening.(事实上没有打电话)Weformunrealpastconditionalslikethis:If…hadbeen/done…,…would/should/could/mighthavedone…1)如果他抓紧时间，他本来能赶上那趟火车。Ifhehadhurried,he
7、couldhavecaughtthetrain.2)如果你昨天告诉他，他也许会提些建议了。Ifyouhadtoldhimyesterday,hemighthavemadesomesuggestions.1)IfIhadtimetomorrow,Iwouldcertainlyhelpyou.2)IfIweretofailmyMathstest,Iwouldhavetotakeitagainattheendoftheterm.3)Ifheshouldcometomorrow,Iwouldtalktohimaboutit.我们用虚拟语气表示想象中发生在将来的情景
8、。Notes4)Iftherewereaheavysnownext
