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1、Unit2Whatishappiness?GrammarandusagePastandfuturetensesBrainstormingWhocanmakethestorymoreinteresting?Thewind___hardyesterday.OurEnglishteacher____busy.She___atseveninthemorningbecauseshe___lastweek.Whileshewas____,herdaughter___.She___bylastweek…PasttensesThesi
2、mplepasttense一般过去时Thepastcontinuoustense过去进行时Thepastperfecttense过去完成时Thesimplepasttense1）在确定的过去时间里所发生的动作或存在的状态。时间状语有：yesterday,lastweek,anhourago,theotherday,in1980等。Eg.IsawTominthestreetyesterday.IboughtthisTVsetinBeijinglastyear.2）表示在过去一段时间内，经常性或习惯性的动作。Eg.When
3、Iwasachild,Ioftenplayedfootballinthestreet.Healwayswenttoworkbybus.Thesimplepasttense3）用过去时表示现在，表示语气委婉礼貌。(1.)动词want,hope,wonder,think,intend等。Eg.Didyouwantanythingelse?Iwonderedifyoucouldhelpme.(2.)情态动词could,would，Eg.Couldyoulendmeyourbike?Thesimplepasttense4）用在
4、条件句中表示与现在或将来事实不符的虚拟语气。Eg.IfIwereabird,IwouldflytoBeijing.Ifhewereherenow,wecouldturntohimforhelp.Thesimplepasttense注意下列句型：◎Itistimesb.didsth.“时间已迟了；早该……了”，Eg.Itistimeyouwenttobed.◎would(had)rathersb.didsth.表示“宁愿某人做某事”，Eg.I'dratheryoucametomorrow.Thesimplepastten
5、se1)过去进行时表示过去某一时刻或某一段时间正在进行的动作。常与atthattime,thewholemorning,alldayyesterday,fromninetotenlastevening等连用。Eg.Whatwashedoingthistimeyesterday?In2001shewasstudyinginauniversity.ThepastcontinuoustenseThepastcontinuoustense2.）过去进行时的主要用法是描述一件事发生的背景；一个长动作发生的时候，另一个短动作发生。
6、Mybrotherfellwhilehewasridinghisbicycleandhurthimself.Itwasrainingwhentheyleftthestation.1）过去完成时表示过去某一时刻或者某一动作之前完成的动作或状态；句中常用by,before,until,when等词引导的时间状语。Bytheendoflastyearwehadbuiltfivenewhouses.Ihadlearnt5000wordsbeforeIenteredtheuniversity.Thepastperfecttens
7、e2）过去完成时的动词还可以表示过去某一时刻之前发生的动作或者状态持续到过去某个时间或者持续下去。Eg.Beforeheslept,hehadworkedfor12hours.HehadbeeninthiscollegeforfiveyearsbeforeIcamehere.Thepastperfecttense（3）在told,said,knew,heard,thought等动词后的宾语从句。Shesaid(that)shehadneverbeentoParis.（4）在过去不同时间发生的两个动作中，发生在先，用过去
8、完成时；发生在后，用一般过去时。Whenthepolicearrived,thethieveshadrunaway.Thepastperfecttense（5）表示意向的动词，如hope,wish,expect,think,intend,mean,suppose等，用过去完成时表示"原本…，未能…"Wehadhopedthatyo
