八年级英语下册Unit7Whatsthehighestmountainintheworld第4课时SectionB(1a-1d)课件新版人教新目标版.ppt

Unit7Whatsthehighestmountainintheworld?,第四课时SectionB(1a1d),weigh的用法作及物动词，表示“称的重量”。eg：CaoCongthoughtofawaytoweightheelephant.曹冲想出了一个称大象的办法。作不及物动词，表示“量”，后接数字。eg：Sheweighs50kilos.她的体重是50千克。【拓展】weight名词，意为“体重；重量”。,倍数表达法用形容词表示甲是乙的几倍时，有以下三个句型：倍数形容词/副词比较级thaneg：Thishallisfourtimesbiggerthanmyclassroom.这个大厅比我们的教室大四倍。倍数as形容词/副词aseg：AsiaisfourtimesaslargeasEurope.亚洲的面积是欧洲的四倍。倍数thesize(height，length.)ofeg：Thehillisfourtimestheheightofthatsmallone.这座山的高度是那座小山的四倍。,用名词表示“量”的倍数时，有以下两个句型：倍数more名词thaneg：Therearefourtimesmorebooksinourlibrarythaninyours.我们图书馆的藏书(数量)是你们图书馆的四倍。倍数asmany/much名词其他aseg：Thisisthreetimesasmuchwaterinthiscupasinthatone.这个杯子里的水(量)是那个杯子里的三倍。重点短语归纳atbirth出生时liveupto活到,一、根据句意，选择方框中的单词并用其适当形式填空。1Mom，Icanlookaftermyselfwell，Iamalreadyan_now.2Thatelephant_about5，000kilos.3Babypandasdoesnthaveany_4Arepandasverysmallat_?Yes，andpeopleneedtotakecareofthemverycarefully.5The_carspeopledrive，the_pollutiontherewillbe.,weighs,teeth,birth,fewer,less,adult,二、单项选择。()6.Linda，youlookthinner.Howmuchdoyou_now?About50kilos.AdevelopBriseCdropDweigh()7.Iknow_aboutJinzhouthanyou，sotellmesomeplease.AlittleBmoreClessDmuch()8.Mypetdogfeelslikestanding_histwolegs.AinBbyConDof,D,C,C,()9.Doyouknowhowtosay6，759inEnglish?Yes，_.AsixthousandsevenhundredandfiftynineBsixthousandandsevenhundredfiftynineCsixthousandsevenhundredfiftynineDsixthousandsevenhundredfiftyandnine()10.Mygardenis_yours.(易错题)AtwicelargerthanBaslargetwiceasClargertwicethanDastwicelargeas,A,A,三、情景交际：从方框中选择合适的句子补全对话。A：Howmuchdoyouknowaboutbabypandas?B：Aretheymuchsmallerthananadultpanda?A：Yes.11._B：Wow，thatssmall！Iknowapandaweighsmanytimesmorethanababy.A：Thatsright.Theadultsweigharound100kilos.B：12._Howsmallisit?A：Atbirth，itsonly15cmlong，butanadultisaround150cmlong.,G,D,A：13._B：No，ababypandaispinkanditcantsee.14._A：Howlongcanpandaslive?B：15._AItalsodonthaveanyteeth.BTheycanliveupto20to30years.CWhatcolouristhebabypanda?DWhataboutthesizeofababypanda?EIsababypand