人教版八年级英语下册《What's the highest mountain in the world?》SectionB PPT课件(第1课时)，共10页。
weigh的用法
①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。
②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
❶用形容词表示甲是乙的几倍时，有以下三个句型：
①倍数＋形容词/副词比较级＋than
eg：This hall is four times bigger than my classroom.这个大厅比我们的教室大四倍。
②倍数＋as＋形容词/副词＋as
eg：Asia is four times as large as Europe.亚洲的面积是欧洲的四倍。
③倍数＋the size (height，length...)of
eg：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。
❷用名词表示“量”的倍数时，有以下两个句型：
①倍数＋more＋名词＋than
eg：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。
②倍数＋as many/much＋名词＋其他＋as
eg：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 doesn't 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.
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．of
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关键词：《What's the highest mountain in the world?》PPT课件免费下载，.PPT格式；
