Unit7What'sthehighestmountainintheworld(SectionA1a-1c)课件人教版八年级英语下册

Unit7

What'sthehighestmountainintheworld?

SectionA1a-1c

Hello,everybody,I’mMissLiaoIliketravelingcomewithmeFromthedeserttotheriverSeethemountainseetheseaWouldyouliketotravelwithme?Task1

Knowhowtoreadthelargenumbers66718844.86630096,000,00010251.千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?SixthousandsixhundredandseventyoneOnethousand

andtwenty-fiveEightthousand,eighthundred

and

forty-four,pointeightsixNinemillion,sixhundredthousandpractice6,6711,0258,844.869,600,000Theworldissobig,andIcan’twaittoseeit!TheQomolangma

HowhighistheQomolangma?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.Whilelisteninghigherthebiggestthedeepestthelongest1.Qomolangmais_______thananyothermountainintheworld.Qomolangmais______________mountainintheworld.2.TheSaharais____________desertintheworld.TheSaharais____________anyotherdesertintheworld.PracticehigherThehighestthebiggestbiggerthanPost-listening1c.Usetheinformationin1btomakeconversations.Howhighisit?Whatisthehighestmountainintheworld?QomolangmaItis8844.86metershigh.Post-listening1c.Usetheinformationin1btomakeconversations.How__

isit?Whatis_____intheworld?The

_____Itis_____.单项选择。1.Ithinksheis____ofallthegirls.

A.beautiful

B.morebeautiful

C.mostbeautiful

D.themostbeautiful2.---Howtallheis!