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Unit4WhenisEaster?ALet’sspellWhenis…?-It’son….Let’sspell绿色圃中小学教育网绿色圃中小学教育网’sspell绿色圃中小学教育网绿色圃中小学教育网’schantHeismyfriend.What’shelike?Heistallandthin.Heisthirteen.Howoldishe?Heisthirteen.Helikesthree.Helikesthree.Helikesmaths.irthirteenteenmathsamthsthininrthreeeeththth摸摸你的喉咙，发th的时候有没有震动？thirteenmathsthreethinthirdfifththicktoothbirthdaybirthdayIt’smybrother’sbirthday.Thisismybrother.Thatismyfather.Thisismymother.athattmotheromtherfatheratherithissfthththatmotherfatherthis摸摸你的喉咙，发th的时候有没有震动？thesethoseclothestherethisfifththirdbrothermotherOh,Ifindmyhome!threefatherthatthesethirteenthinmouth•1．字母组合th在数词（包括基数词和序数词）中读清辅音/θ/。•例：three/θri:/，third/θә:d/，2.th在代词中读浊辅音/ð/•例：thisthose•3．在th后以字母-er结尾的单词中，th读浊辅音/ð/。例：father/‘fa:ðә/，whether/’weðә/24．以th结尾的单词，th读清辅音/θ/。•例：mouthtooth2().AthatBthreeCthose3().AmouthBclothesCtooth1().AthirdBfifthCtheseCBB4().AmotherBfatherCmathsCIt’syourturnnow.Tonguetwist1.Threethinbrothersarebathinginthebathroom.2.Theirfatherandmotherthinkit’sgoodforthemtobrushtheirthickteethonThursday.3.Afterbathing,theywillwalkthroughapath.4.Look!Theweatherisratherfine.Thankgoodness!Canyouread?•Beth,Beth.Gotothestudy.•Bethlikestolearnmaths.•Beth,Beth.Gotothebathroom.•Bethlikestotakeabath.•Beth,Beth.Gotothekitchen.•Bethlikestoeatacake.•Ah!abigmouth.