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时间:2019-11-14
《高中英语Unit4Earthquakes第4课时教案新人教版必修1.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit4Earthquakes教学目标:词汇:contractexpandliquidsolid短语:getawayfrom语法:分数表达法重难点突破:1.Putthewordsinpairsorgroups:air——gas——oxygencontract——expandearth——sun——moongas——liquid——solid2.Putwordsintherightplace.electricityironmetalsteelairglassnatural:man-made:both:3.Two-thirdsoftheearth'ssurfaceiswater
2、.海洋占地球表面的三分之二(1).分数表达法英语中表示分数时,用基数词作分子,序数词作分母,当分子大于一时,分母要用复数形式。分子和分母之间可以用连字符连接,也可不用。例如:1/3onethird(或one-third);3/5threefifths(three-fifths)(2)当某物的几分之几作主语时,如果此物体本身为可数名词复数,则谓语动词用复数形式,若为可数名词单数或不可数名词,谓语动词则用单数形式。例如:Onethirdofthestudentsdon'tknowtheanswertothequestion.Onethirdofone'slifeisspenton
3、thebed.人生的三分之一是在床上度过的。Threefourths/Threequartersofthewatermelonhasbeeneatenupbyhim四分之三的西瓜都被他吃光了。(即那个西瓜的四分之三)拓展:用法类似的词语还有half,quarter,most,percent,rest等。翻译练习:(1).我们学校1/4的学生英语学得不好。(2).地球上96.5%的水是海洋水。(3).Saythenumber:12,345,678,900billionmillionthousand(4).Saythepercentages:%:percent4.getawayf
4、rom从(某地等)走开,离开,摆脱掉Shestruggledtogetawayfromherattacker.她挣扎著想摆脱那个侵犯她的人.I'mafraidIcan'tgetawayfromthemeeting.我恐怕难以从会议中抽身。典型例题:Thelittleboyhas______manybadhabitsaftergoingtoschool.A.gotawayfromB.brokeawayC.keptawayfromD.stayedawayfrom强化训练:(一)单词填空:1.Weuse__________(电)toprovidepowerformachines.2
5、.Ifyou_________(加热)wateritwillboil.3.Whenyouheatmetalit_________.4.Ifyou______wateritbecomessteam.(二)Choosethecorrectanswertocompleteeachsentence:1.Infigures,amillionis().A.100,000B.1,000,000C.100,000,0002.Anotherwayofsaying50percentis().A.aquarterB.halfC.ahalf3.Four-fifthsisthesameas().A.4
6、0percentB.50percentC.80percent4.Athirdofsomethingisequalto().A.two-fifthsB.33percentC.five-tenths5.Hismotherhadthoughtitwouldbegoodforhischaracterto_______fromhomeandearnsomeonhisown.A.runawayB.takeawayC.keepawayD.getaway(三)预习:ReadingandVocabulary(四)作业:课本Page42Activity2,4
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