八年级英语下册 Unit 7 What's the highest mountain in the world（第4课时）Section B(1a1d)课件 （新版）人教新目标版

Unit 7Whats the highest mountain in the world?第四课时第四课时Section B (1a1d)weigh的用法作及物动词，表示“称的重量”。eg：Cao Cong thought of a way to weigh the elephant.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：She weighs 50 kilos.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：This hall is four times bigger than my classroom.这个大厅比我们的教室大四倍。倍数as形容词/副词aseg：Asia is four times as large as Europe.亚洲的面积是欧洲的四倍。倍数the size (height，length.)ofeg：The hill is four times the height of that small one.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：There are four times more books in our library than in yours.我们图书馆的藏书(数量)是你们图书馆的四倍。倍数as many/much名词其他aseg：This is three times as much water in this cup as in that one.这个杯子里的水(量)是那个杯子里的三倍。重点短语归纳at birth出生时live up to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，I can look after myself well，I am already an _now.2That elephant _about 5，000 kilos.3Baby pandas doesnt have any _4Are pandas very small at_?Yes，and people need to take care of them very carefully.5The _cars people drive，the _pollution there will be.weighsteethbirthfewerlessadult二、单项选择。( )6.Linda，you look thinner.How much do you _ now?About 50 kilos.AdevelopBrise Cdrop Dweigh( )7.I know _ about Jinzhou than you，so tell me some please.Alittle Bmore Cless Dmuch( )8.My pet dog feels like standing _ his two legs.Ain Bby Con DofDCC( )9.Do you know how to say 6，759 in English?Yes，_.Asix thousand seven hundred and fiftynineBsix thousand and seven hundred fiftynineCsix thousand seven hundred fiftynineDsix thousand seven hundred fifty and nine( )10.My garden is _ yours.(易错题)Atwice larger than Bas large twice asClarger twice than Das twice large asAA三、情景交际：从方框中选择合适的句子补全对话。A：How much do you know about baby pandas?B：Are they much smaller than an adult panda?A：Yes.11._B：Wow，thats small！I know a panda weighs many times more than a baby.A：Thats right.The adults weigh around 100 kilos.B：12._ How small is it?A：At birth，its only 15 cm long，but an adult is around 150 cm long.GDA：13._B：No，a baby panda is pink and it cant see.14._A：How long can pandas live?B：15._AIt also dont have any teeth.BThey can live up to 20 to 30 years.CWhat colour is the baby panda?DWhat about the size of a baby panda?EIs a baby panda also black and white?FIt can eat 10 kilos of food a day.GWhen theyre born，they only weigh about 0.1 to 0.2 kilos.EAB