人教版八年级下册Unit7 SectionA(1a-1c)学案

Unit7What’sthehighestmountainintheworld?（1a-1c）教学目标：1语言目标：掌握本单元重点词汇及能用比较级和最高级谈论各之最。2技能目标：能听懂和谈论有关地理和自然的话题。3情感目标：培养学生热爱大自然，保护环境的意识。教学重点：1学会4个四会单词：square，meter，deep，desert；2短语：insize，intheworld，2meterstall/long，oneofthebiggest；3句子：What’sthehighestmountainintheworld?Qomolangma.HowhighisQomolangma?It’s8,844.43metershigh.It’shigherthananyothermountain.Whichisthedeepestsaltlakeintheworld?TheCaspianSeaisthedeepestofallthesaltlakes.教学难点：形容词和副词的比较级和最高级变化规则和用法。物体之间的对比。SectionA1(1a–2a)Step1Reviews:WehavelearnUnit6lastweek(yesterday),andtodaywe’lllearnUnit7What’sthehighestmountainintheworld?形容词、副词的最高级：三者或三者以上比较用最高级.1)常与in短语或of短语连用。形容词最高级前要加the,但当前面有物主代词、名词所有格等修饰时，不加the。副词最高级前可省the.eg.Susanis_____________(short)inherclass.Heis___________________(popular)oftheseboys.Alice2)形容词最高级前可被序数词修饰，其结构为：the+序数词+形容词最高级+单数名词.eg.TheYellowRiveris_____________________(第二长)riverinChina.3)“oneof+the+形容词的最高级+复数名词”表示“最……的……之一”eg.Hangzhouisoneof_____________(beautiful)_______(city)inChina.()3.MoYanisoneof____________writerstoday.morefamousB.mostfamousC.muchmorefamousD.themostfamous4）“a+最高级”，“非常”,＝very.eg.It’samostimportantquestion.=It’sa______importantquestion.2.Showsomepicturesandinformationofthehighestmountain,thelongestriver,thedeepestsaltlakeandthebiggestdesertintheworld.Step2Warmingup1.Watchthephotosandtalkaboutthem“Howbig/high/long/bigis…?’andhelpthestudentstoanswer:It’s…meters/kilometers/cmbig/high/long/big.2.Lookthesephotosandpracticethedialogue:e.g.A:HowhighisQomolangma?B:It’s8,844.43metershigh.Step31aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershighStep4Explanation:1025metersdeep，“1025米深”，英语中，表示长，宽，高等时，主要有两种方式：基数词+单位词+形容词（long,wide,high,deep）基数词+单位词+in+名词（length,width,height,depth）;常见的单位词有：meter(米)，foot(英尺)等。eg:两米长________________/________________;5英尺高________________/________________;10米深________________/________________;()1.TheYangtzeRiverisabout_______.A.6300kilometerlongB.6300kilometerslongC.6300-kilometerlongD.6300kilometers’long()2.It’s__________tree.A.10meterstallB.10meters’tallC.a10-meter-tallD.a10-metersStep5Listening1.1bListenandcompletethesentences.1)Qomolangmais______thananyothermountainintheworld.2)TheSaharais____________desertintheworld.3)TheCaspianSeais____________ofallthesaltlakes.4)TheNileis_________riverintheworld.【探究乐园】1.Qomolangmaishigherthananyothermountainintheworld.珠穆朗玛峰比世界上其他任何山峰都高。“比较级+thananyother+单数名词+比较范围”=“比较级+thantheother+复数名词+比较范围”,且可与最高级互换。该句的同义句是：Qomolangmais_______thantheother________intheworld.或:Qomolangmais________________________mountainintheworld.eg.Lucyisthemosthard-workingstudentintheclass.(改同义句)Lucyis________________thananyotherstudentintheclass.Lucyis________________than_____otherstudentsintheclass.1.Tomis______(tall)thananyother______(player)intheschoolteam.()2.Thegirlis________thananyothergirlinherclass.A.morebeautifulB.themostbeautifulC.muchbeautifulD.beautifully巩固练习1.Mybedroomhasabout10________(平方)insize.2.China'sareais9600000_____(平方)kilometers.3.TheCaspianSeaisdeeperthananyother_____(sea)4.Iwanttobuya____ruler.Doyouknowwhatits_____is?A.long;longB.long;lengthC.length;longD.length;length（）5.SheisbetteratEnglishthan________inherclass.A.anyotherstudentB.otherstudentC.anyotherstudentsD.theotherstudent（）6.-DidKatedothebestintheexam?-No,butofallthestudentsshewas________A.themostcarefulB.morecarefulC.mostcarefullyD.morecarefully（）7.-Thedoctortoldmenottoeattoomuch,butIfinditdifficult.-Thedoctorisright.__________youeat,_______youwillbe.A.Theless;thehealthierB.Th