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UnitFiveWhosedogisit?P49Let'slearnWhatisthis?(What'sthis?)Thisisa/an...(It'sa/an....)It'sanelephant.Whatarethses?(Whatarethey?)Theseare....(Theyare....)Theyaremonkeys.Whatarethose?Thoseare....Thosearetrees.小结如下：单数复数thisthesethatthose②Thedogishis.①It'shisdog.=Itishisdog.Whosedogisit?Whosedogisit?①It'sherdog.=Itisherdog.②Thedogishers.Whosedogisit?①It'smydog.=Itismydog.②Thedogismine.Whosedogisit?①It'stheirdog.=Itistheirdog.②Thedogistheirs.Whosedogisit?①It'sourdog.=Itisourdog.②Thedogisours.It'syourdog.Thedogisyours.语法小结：第一人称第二人称第三人称单数复数单数复数单数复数形容词性物主代词myouryouryourhisheritstheir名词性物主代词mineoursyoursyourshishersitstheirsLet'spractiseOpenyourexercisebooksThankyou!