八年级英语下册 Unit 7 What's the highest mountain in the world（第4课时）Section B(1a-1d)课件 （新版）人教新目标版 (2)

Unit 7 Whats the highest mountain in the world?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。1 Mom， I can look after myself well， I am already an _now.2 That elephant _about 5， 000 kilos.3 Baby pandas doesnt have any _4 Are pandas very small at_?Yes， and people need to take care of them very carefully.5 The _cars people drive， the _pollution there will be.weighs teethbirthfewer less adult 二、单项选择。( )6.Linda， you look thinner.How much do you _ now?About 50 kilos.A develop B rise C drop D weigh( )7.I know _ about Jinzhou than you， so tell me some please.A little B more C less D much( )8.My pet dog feels like standing _ his two legs.A in B by C on D ofDCC ( )9.Do you know how to say 6， 759 in English?Yes， _.A six thousand seven hundred and fiftynineB six thousand and seven hundred fiftynineC six thousand seven hundred fiftynineD six thousand seven hundred fifty and nine( )10.My garden is _ yours.(易错题)A twice larger than B as large twice asC larger twice than D as 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.GD A： 13._B： No， a baby panda is pink and it cant see.14._A： How long can pandas live?B： 15._A It also dont have any teeth.B They can live up to 20 to 30 years.C What colour is the baby panda?D What about the size of a baby panda?E Is a baby panda also black and white?F It can eat 10 kilos of food a day.G When theyre born， they only weigh about 0.1 to 0.2 kilos.E AB