Unit3Who’sthat?PollyAnnieAnnie:Whoisthatboy,Polly?Polly:Whichboy,Annie?Annie:Theboyonthesilverbicycle.Polly:That’sRobertJenkinsgirlboywhoisthat…?(boy/man/woman/girl)Thatis…Whichapple?Which+n(boy/car/student)?Theboyisonthehorse.Theflowersareonthetable.on的用法：1.在…表面上，在…之上：abookonthedesk课桌上的一本书2.依附(或固定、连接)在…上：amaponawall墙上的一张地图3.包裹(或覆盖)在…上：Heputablanketonherbody.他在她身上又盖了一条毯子。4.位于…上：alittlecottageonthehill山上的一所小房子5.在…中：onthewing在飞行中；在行动中6.在…方向：tosailonanortherlycourse向北航行ontheright在右(手)方Annie:Who’sthatman?Polly:Whichman?Annie:Themanwiththeblackumbrella.Polly:That’sMr.Jenkins.He’sRobert’sfather.With:有，带着带着一顶蓝帽子的女孩。Thegirlwithabluehat.manwomanAnnie:Who’sthatwomanwiththewhiteumbrella?Polly:That’sMrs.Jenkins.She’sRobert’smotherAnnie:Andwho’sthatgirlontheredbicycle?Polly:That’sLucyJenkins.She’sRobert’ssister.Annie:Lookatthatyoungman.Whoishe?Polly:Whichyoungman?Annie:Theyoungmaninthatoldcar.Polly:Oh,that’sPaul.lookat:看一看Lookatthatcat!的用法：表示地点、场所、位置等]在…里面；在…内部；在…上：eroom在房间里intown在城里表示时间]在…期间；在(一段时间)以内；过…之久：ummer在夏天inthiscentury在本世纪表示服装、打扮]穿着；戴着；带着：olicemaninuniform穿着制服的警察dyinwhite穿白衣服的女士youngoldoldnewgrandfathergrandmotherfathermother(wife)uncleauntbrothersistersondaughternephewniece//familyAnnie:SoPaulisRobert’scousin,too.Polly:That’sright.RobertisLucy’sbrother.AndPaulistheircousin.Annie:_______isthatboy,Polly?Polly:________boy,Annie?Annie:Theboyonthe________bicycle.Polly:That’sRobertJenkins.Annie:Who’sthat__________?Polly:Whichman?Annie:Theman_________theblackumbrella.Polly:That’sMr.Jenkins.He’sRobert’s__________.Annie:Who’sthat________withthewhiteumbrella?Polly:That’sMrs.Jenkins.________Robert’smother.Annie:Andwho’sthatgirlonthered____________?Polly:That’sLucyJenkins.She’sRobert’ssister.Annie:_________thatyoungman.Who...
