人教新目标Go For It!英语八年级下册《What's the highest mountain in the world?》SectionB PPT课件(第1课时)
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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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