Unit 7 Whats the highest mountain in the world？ Section A (1a~2d) 课件(共23张PPT，内嵌音视频) 2024-2025学年英语人.pptx

Unit7Whatsthehighestmountainintheworld?SectionA(1a~2d)

Let’swatchavideoandanswerthequestion.WhatisthelongestandthesecondlongestriverinChina?

能说出并正确运用本课时的重点单词和短语：square,meter,deep,desert,population,feelfree,asfarasIknow,man-made等。123能掌握形容词比较级、最高级的常见句型。能使用形容词的比较级和最高级谈论地理和自然现象。

Activity1目标一:能掌握形容词比较级、最高级的常见句型Doyouknowtheseplaces?QomolangmaQomolangmarunsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearround.It’s8844.43metershigh,thehighestmountainintheworld.theNileTheNileisthelongestriverintheworld.It’smorethan6600kilometerslong.Itrunsthrough9countriesandrunsintotheMediterraneanSea(地中海)intheend.珠穆朗玛峰尼罗河

theCaspianSeaTheCaspianSeaisthedeepestsaltlakeintheworld.Its1,025metersdeep.ItliesintheborderbetweenAsiaandEurope.theSaharaTheSaharaisthebiggestdesertintheworld.Itsabout9,600,000squarekilometersinsize.ItislocatedinthenorthernAfrica.里海撒哈拉沙漠

Matchthefactsyouknow.1a想一想：1.怎么读上面的数字？2.如何用英语表达某物的长度，高度，深度和面积等?Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh

总结归纳：先从右往左数，每三位数加一个逗号（即以此把数目分为若干段）。第一个逗号前的数为thousand（千），第二个逗号前的数为million（百万），第三个逗号前的数为billion（十亿）。9,987,654,321millionbillionthousandninebillion,ninehundredandeighty-sevenmillion,sixhundredandfifty-fourthousand,threehundredandtwenty-onehundred解读：从右往左，第一个逗号前读thousand；向左再推三位，第二个逗号前读million；第三个逗号前读billion。千位以上基数词的表达法

6,671kilometerslongabout9,600,000squarekilometersinsize1,025metersdeep8,844.43metershighReadfollowingnumberstoyourpartnerthenlet’scheck.(sixthousandsixhundredandseventy-one)(ninemillionsixhundredthousand)(onethousandandtwenty-five)(eightthousandeighthundredandforty-fourpointfourthree)

长度，宽度，高度，深度的表示方法英语中，表示长、宽、高等时，主要有两种表达方式：①基数词＋单位词十形容词（long,wide,high,deep等）②基数词十单位词＋in＋名词（length,width,he