Unit7Whatsthehighestmountainintheworld(SectionA1a-1c)课件人教版八年级英语下册.pptx

Unit7

Whatsthehighestmountainintheworld?

SectionA1a-1c

Hello,everybody,I’mMissLiaoIliketravelingcomewithmeFromthedeserttotheriverSeethemountainseethesea

Wouldyouliketotravelwithme?

Task1

Knowhowtoreadthelargenumbers66718844.86630096,000,0001025

1.千位及千位以上数字的表达：以三位数为一个单位，从右至左，每三位数用“，”隔开。Tips2.逗号读法：阅读时，将每三位数看作一个单位，从右至左，依次为thousand(千），million（百万），billion（十亿），每个单位按照百位、十位、个位向下读，其中百位到十位之间要加and,小数点读作point,小数点后面一个一个读。3.hundred,thousand，million，billion都不能加s。

Canyoureadthesenumbers?SixthousandsixhundredandseventyoneOnethousandandtwenty-fiveEightthousand,eighthundredandforty-four,pointeightsixNinemillion,sixhundredthousandpractice6,6711,0258,844.869,600,000

Theworldissobig,andIcan’twaittoseeit!

TheQomolangmaHowhighistheQomolangma?Itis8844.86metershigh.

HowlongistheNile?

TheNileItis6671kilometerslong.

TheCaspianseaSaltlake咸水湖Freshlake淡水湖HowdeepistheCaspiansea?Itis1025metersdeep.

Howbigisthesahara?ThesaharaItisabout9,600,000squarekilometersinsize.

Doyouknowwhytheseplacesarefamous?

1b.Listenandcompletethesentences.1.Qomolangmais______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.Whilelisteninghigherthebiggestthedeepestthelongest

1.Qomolangmais_______thananyothermountainintheworld.Qomolangmais______________mountainintheworld.2.TheSaharais____________desertintheworld.TheSaharais____________anyotherdesertintheworld.PracticehigherThehighestthebiggestbiggerthan

Post-listening1c.Usethe