英语八年级下册Unit7A1a-1c公开课

Let’senjoythejourneyaroundtheworld!Chengdu??mountainQomolangma[ˈtʃəuməuˌlɑ:ŋmə]珠穆朗玛theCaspianSea[ˈkæspiən]里海Sea?Saltlake?咸水湖rivertheNile[nail]尼罗河theSahara[sə'hɑ:rə]撒哈拉

QomolangmatheNiletheSaharatheCaspianSea654321123456Chooseanumbertoanswerthequestion.最强大脑7010987654321010987654321010987654321010987654321010987654321010987654321010987654321010987654321Howhigh?Howdeep(深的)?Howlong?Howbig?1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometers(km²)

insizeTheSahara1,025meters(m)deepTheCaspianSea6,671kilometers(km)longTheNile8,844.43meters(m)high1,025

6,6718,844.439,600,000onethousand

andtwentyfiveeightthousandeighthundredand

fourty-fourpointfourthreesixthoudsandsixhundredandseventy-oneninemillion（百万）sixhundredthousandCanyoureadthenumbers?1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometers(km²)

insizeTheSahara1,025meters(m)deepTheCaspianSea6,671kilometers(km)longTheNile8,844.43meters(m)highQomolangmatheNiletheSaharatheCaspianSea8844.43metersQomolangmaisthehighestmountainintheworld.Howabouttheothers?1bListenandcompletethesentences.1.Qomolangmais______thananyothermountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongestListenagainandtrytofindout:Whatisthesecondlongestriverintheworld?AmazonRiver亚马逊河;亚马孙河

Makeconversations.1cB:It's8,844.43metershigh.Qomolangma

8,844.43mountainA:What'sthehighestmountainintheworld?B:Qomolangma.A:Howhighisit?

Makeconversations.1cA:Whatis_______intheworld?B:________intheworld.C:Yes,itis___thananyother__intheworld.A:How____isit?D:Itis_______.TheSahara撒哈拉TheNile尼罗河TheCaspianSea里海desertriversaltlake1,0256,6719,600,000Exercise这条河5米深。2.这间教室面积大约是50平方米。3.撒哈拉沙漠是世界上最大的沙漠。翻译下列句子。Theriveris5metersdeep.

Thisclassroomisabout50squaremetersinsize.TheSaharaisthebiggestdesertintheworld.meter

n.米

[ˈmi:tə(r)]kilometern.千米[kɪˈlɒmɪtə]square(kilo)meters?1kilometer=1000meterssquaren.平方，正方形

广场

squaremeter平方米

size

n.面积

insize大小；尺寸[skweə(r)]It’s4meterslong.It’s2meterswide.Howlarge?4m2mSize?S=4m×2m=8m²It’s8squaremetersinsize.Qomolangma

8,844.43It'sthehighestmountainintheworld.It'shigherthananyothermountainintheworld.TheSahara撒哈拉9,600,000desertIt'sthebiggestdesertintheworld.Itisbiggerthananyotherdesertintheworld.TheCaspianSea

里海1,025It'sthedeepestsaltlakeintheworld.Itisdeeperthananyothersaltlakeintheworld.TheNile尼罗河6,671It'sthelongest

riverintheworld.Itislongerthananyotherriverintheworld.deepadj.深的desertn.沙漠[di:p]['dezət]22Spellthewordcorrectlyandget2pointssaltlake（咸水湖）freshwaterlake（淡水湖）洞庭湖听力原文“the+序数词+最高级+单数名词+in…”

表示“是……中的第几……”“比较级+thananyother+名词+其他”

表示“比其他任何一个……都…