高中英语Unit4AstronomythescienceofthestarsSectionⅡ课件新人教版.ppt

SectionLearningaboutLanguage,UsingLanguage,SummingUp生物学的(2)gentleadj.温和的;文雅的adv.温和地(3)physicistn.物理学家n.物理;物理学adj.物理的(4)weightn.重量v.称的重量;重达adj.失重的;无重力的adv.失重地(5)exhaustvt.用尽;耗尽;使筋疲力尽adj.筋疲力尽的adj.令人筋疲力尽的,biologist,biological,gently,physics,physical,weigh,weightless,weightlessly,exhausted,exhausting,一,二,2.用所给词组的适当形式填空cheerup,nowthat,breakout,watchout(1)wehavecometoChina,letsvisittheGreatWall.(2)Youshouldalwaysforthosesleepingdogsthatmayattachyouanytime.(3)TheyoungmanbegantowhenIpromisedtohelphim.(4)DoyouknowwhentheSecondWorldWar?,Nowthat,watchout,cheerup,brokeout,一,二,二、阅读导学1.阅读课文“AVISITTOTHEMOON”,根据课文内容判断正“T”误“F”()(1)Theforceofgravitychangedthreetimesandthelastchangewasthemostpowerful.()(2)Weweretoofarfromtheearthtofeelitspull.()(3)Onthemoon,ourweightwouldbelessthanontheearthbecauseweweretoofarfromit.()(4)Leavingthemoonsgravitywasaspainfulasleavingtheearths.()(5)Spacetravelwasveryexhausting,sothewriterdidntlikeitatall.,F,T,F,F,F,一,二,2.阅读课文“AVISITTOTHEMOON”,根据课文内容选择正确答案(1)Thepassageismainlyabout.A.anintroductionofthemoonB.thegravitythatIfeltonmywaytothemoonC.myvisittothemoonD.myfriendLiYanping,anastronomer(2)Fromthetext,weknowthattheforceofthegravitywouldchangetimes.A.2B.3C.4D.5,C,B,一,二,(3)Whenorwheredidtheauthorfeelstrongestofthegravityoftheearth?A.Onthemoon.B.Onthehalfwaytothemoon.C.Attheverybeginning.D.Ontheirleavingfromthemoon.(4)Whatcausestheauthortofeelthathebecomesweightlessonthemoon?A.Spaceship.B.Gravity.C.Hisfriend.D.Goodfeelings.,C,B,1,2,3,4,5,Asaresultofthisevent,agreatdustcloudformedintheskyblockingoutthesunlight.(Page29)正因为这一事件,天空中形成了一团巨大的尘云,挡住了阳光。blockout挡住,遮住(光线和声音);忘掉,抹去(不愉快的事)Thenoisefromthecarblockedoutthesoundofourvoices.汽车的噪音把我们的声音盖下去了。Anuglybuildingblockedouttheviewfromthewindow.一座难看的大楼把窗外的景物遮住了。Itrytoblockouttheunpleasantexperience.我尽力去忘记那段不愉快的经历。,1,2,3,4,5,合作探究(1)读一读细观察阅读下列句子,注意block的用法。Variousbarricadesblockoffallthemainstreetsofthecity.Thetrafficisveryheavyandhasbeguntoblockupthestreets.Mynoseisblockedupwiththecold.Wefoundthatabigelephantblockedourway.(2)写一写勤总结,封锁,封闭,阻塞;封住(孔、洞等),挡住某人的路,1,2,3,4,5,1,2,3,4,5,Icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbecomesmallerandthemoonlarger.(Page31)我立刻感到很高兴,由于失重我在太空舱里飘来飘去,我望着(身后的)地球越来越小,而(前方的)月球越来越大。cheerup感到高兴;感到振奋Uponarrivingattheclassroom,theauthorwascheeredupbyawarmwelcome.一到教室,作者就被热烈的欢迎振奋了精神。Cheerup!Thingswillworkoutforthebest.振作起来!事情会有好结果的。,1,2,3,4,5,合作探究(1)读一读细观察阅读下列句子,注意黑体词的用法。ThecrowdcheeredloudlyastheQueenappeared.Hisspeechwascheeredbytheaudience.Shemaskedhersufferingswithacheerfulsmile.【高考典句】(2016天津高考)Cathydidntexpectanyawardbutwasstilltheretocheeronherfriendsandpraisetheiraccomplishments.凯茜没有期望任何奖赏,但仍在那儿为她的朋友们鼓劲加油,并且赞美他们的技能。Cheers!Withourcoffeecupsforourfuture!,1,2,3,4,5,(2)写一写勤总结,欢呼;喝彩,欢快的;愉快的,为某人加油,干杯(用于祝酒),1,2,3,4,5,1,2,3,4,5,“Oh,dear,”Icried,“walkingdoesneedabitofpracticenowthatgravityhaschanged.”(Page31)“天哪,”我大声说,“重力改变了,看来走路也的确需要练一练了。”nowthat既然Nowthatyouareonthebusiness,whatsyouradviceforsomeonetobecomeafashiondesigner?既然你是从事这个行业的,你对于想成为一个时尚设计师的人有什么建议?Nowthatyouareacollegestudent,youshouldlearntobeindependentofyourparentshelp.既然你已是个大学生了,就应当学着独立,不靠父母的帮助。,1,2,3,4,5,合作探究想一想善辨析辨析because,since/as/nowthat和for的不同用法。Whydoyouwanttogotherewithme?为什么你想和我去那儿?BecauseIwanttotakecareofyou.因为我想去照顾你。because表示直接的原因,常用来回答why引起的问句;此外,在强调句型中,如果需要强调原因,也只能用because。Since/As/Nowthateverythingisready,letsbegin.既然一切准备就绪,我们就开始吧!since/as/nowthat语气较弱,常用来说明已知的原因。Springmaycomehere,forbirdsaresingingintheforest.春天可能来了,因为鸟儿在林中歌唱。for用来表示原因时是并列连词,for后的句子对前面的话进行解释,常用逗号同前面的句子分开,for不放在句首。,1,2,3,4,5,1,2,3,4,5,Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshipastheearthsgravityincreased.(Page31)我们惊奇地看着,随着地球引力的增加,宇宙飞船的外层燃烧起火。breakout突发;爆发Iwasstillsleepingwhenthefirebrokeoutandthenitspreadquickly.我还在睡觉时着火了,然后火迅速蔓延。Warbrokeoutoneevening.一天晚上,战争爆发了。,1,2,3,4,5,合作探究(1)读一读细观察阅读下列句子,注意break词组的用法。ThecomputersystembrokedownsuddenlywhilehewassearchingforinformationontheInternet.当他在因特网上搜索信息时,电脑系统突然崩溃了。Thepolicecametobreakupthecrowd.警察来把人群驱散开。Pleasedontbreakinonourconversation.请别打断我们的谈话。Wemaybreakoffrelationswiththatcountry.我们有可能和那个国家断绝关系。Youmustbreakawayfromsuchbadhabits.你必须戒掉这样的坏习惯。Wehadtobreakintothehouseaswehadlostthekey.因为我们弄丢了钥匙,所以不得不破门而入。,1,2,3,4,5,(2)记一记长知识,1,2,3,4,5,1,2,3,4,5,Watchoutfor.(Page31)当心watchout密切注视;当心;提防Watchout(=Takecare)!Thereisadangerahead.当心!前面有危险。Watchoutforcarswhenyouwalkalongthestreet.当你在街上行走时,当心汽车。归纳watchout后常接介词for,表示“当心”。,1,2,3,4,5,合作探究(1)读一读细观察阅读下列句子,注意watch词组的用法。Theywatchcloselyoveryou.Pleasewatchoverthelittlebirdsforme.Youwillwatchyourtongue/mouthinmypresence!Theretheyabandonedtheircarandcontinuedonfoot,sleepingintheforestandtakingturnstokeepwatch.Iwasservingontheleadbattleshipandwasonwatchonthebridgeasnightfell.Watchyourstep.Theresaholeinthesidewalk.,1,2,3,4,5,(2)写一写勤总结,注视;照看;保护,说话当心,放哨;站岗,值班,当心脚下,1,2,3,4,5,一、单句改错1.Nowthatyouhavemadeapromise,soyoumustcarryiton.答案:去掉so2.TheyhadescapedtoAmericashortlyafterwarwasbrokeoutin1939.答案:去掉was3.Wemustwatchoutatthethievesonthebus.答案:atfor4.Someonesawhertocomeintothelibrary.答案:去掉to5.Theriveristwicelongthanthatone.答案:longlonger,二、单