Exercise1.Therearetoomanyp______inthebus.Let’stakethenextone.2.Whydon’tyoulikelivinginthecity?Becauseairp______istooserious.3.TodayIdon’twanttogoa______.Ijustwanttostayathome.4.Canyoutellmesomea______ofcycling?Sure.Itcanhelpuskeepfit.1.Ifpeopleobeythetrafficrules,therewillbefeweraccidents.2.Ifwerideatnight,weshouldhavelightsonthebicycles.3.Ifwebreakthetrafficrules,wemaygetafineandevenbeindanger.4.Pleaseringmeupifyouwanttogowithme.设疑自探:这些句子有什么共同特点?解疑合探:1.从句都是什么时态2.主句有怎样的特点3.if引导的条件状语从句,若主句是______时态,含有______动词或是______句时,从句常用______时态Exercise•Page49Listento1aandmarkT(True)orF(False)1.Manypassengerswerehurtinthetrafficaccidentyesterday.()2.TrafficinBeijingisverygood.()3.Michaelrideshisbikelessthanbefore.()4.Cyclingdoesnotcauseairpollution.()5.Itisnoteasytoparkbikes.()解疑合探1.找出骑自行车的优点2.找出表达赞同的语句3.找出含有If引导的条件状语从句的句子,并做分析Review•学生自编试题2•ListentothepassageandfillintheblanksWriting•根据3a的图片和提示完成句子,并组成一片文章Summary