高中英语人教版必修3Unit4Astronomythescienceofthestarsperiod3教案1

UsingLanguage:ReadingAVisittoTheMoon【学习目标】1.掌握重点词汇和短语的意义及用法。2.自主学习，合作探究，掌握文中的长难句。3.能利用相关阅读技巧完成阅读任务。4.拓展关于“宇宙”的相关英语背景知识。【重点难点】重点:提高阅读能力；熟记重要词汇短语及其用法。难点:长难句分析预习案PreviewingCases【使用说明及学法指导】1.先通读教材，完成表层理解题，在勾画出文中的疑难点，了解地球引力在航行过程中的三次变化。2.了解一些重点单词及短语的用法.3.掌握倍数的表达法一轮阅读做题目1.ReadandthendescribethethreewaysinwhichgravitychangedforLiYanpingandhowhisweightchanged.1).Thepullofgravitybecameverystrong_______shelefttheearth’satmosphere.Hisweightisnormal.2).It____________whenhewasinspace.Heis___________.3).Itwasvery__________whenhewasonthe_________.Heweighs_______thanonearth.二二轮阅读找难点学习建议：在文中勾画出单词、短语、重点句型，并结合语境猜测其含义，再试着关上课本完成下面练习。1._____________________whentheysawtheteamarrive.当看到球队的到来，人群欢呼起来2.a.We_____________________behindthetrees.我们看着太阳正在树后面落下b.Everydayasthey__________________,theirheartsfilledwithhope.每一天当他们看到植物生长，他们的心里都充满了希望.3._________________________,wecanbeginthemeeting.既然每个人都到了，我们就可以开始会议4.I’vebeentryingto______________thisnewtypewriter.我一直想知道这部新的打字机的用法.5._________________suddenlyatmidnight.在深夜,突然有人吵架我的疑惑：请你将预习中未能解决的问题和有疑惑的问题写下来,待课堂上与老师和同学探究解决._____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________探究案ExploringCases探究点一：长难句分析。通过分析句子成分来理清句子结构。1.Beforeweleft,LiYanpingexplainedtomethattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful.(1)此句是一个由_______连接的,由_________引导的__________从句,作___________的_________.其中,第一个_______可省,第二个_______不能省.(2)翻译本句话:____________________________________________________________________________________________________________________________________________________.(3)仿写：他解释说他并没有偷那个妇女的钱包,并说自己其实是在做好事.Heexplained_____________________________________________________________________________________________________________________________________.2.Whenwegetclosertothemoon,weshallfeelitsgravitypullingus,butitwillnotbeasstrongapullastheearth’s.在本句中划线部分应翻译成:_______________________________________________.仿写:当地震发生的时候,我感觉到整个大地在摇晃.________________________________________________________________________.asstrongapullastheearth’s,应翻译为:____________________________________表示倍数的方法有:a:___________________________________________________________________例句:________________________________________________________________b:___________________________________________________________________例句:________________________________________________________________c:____________________________________________________________________例句:_________________________________________________________________3.Walkingdoesneedabitofpracticenowthatgravityhaschanged.(1)翻译:____________________________________________________________________(2)nowthat同since相似，语气较弱，强调人们已知的事实。造句:a:既然你忙,就让我给你做吧_________________________________________________________________________b:既然人都齐了,咱们开始干吧_________________________________________________________________________4.Wewatchedamazedasfirebrokeoutontheoutsideofthespaceshipastheearth’sgravityincreased.amazed在句中是___________充当____________(句子成分).仿写:他进来的时候没有人注意到.Hecamein__________________.课堂自测自测习题见《同步方略》P6163及同步练习5句型运用板块。一.Thepullofgravitybecameverystrongwhenshelefttheearth’satmosphere.Hisweightisnormal.Itdisappearedwhenhewasinspace.HeisweightlessItwasverylightwhenhewasonthemoon.Heweighslessthanonearth二.1.Thecrowdcheeredup2.a.watchedthesunsettingb.watchedtheplantgrow3.Nowthateverybodyishere4.getthehangof5.Aquarrelbrokeout探究案1．(1)此句是一个由__and_____连接的,由____that_____引导的___并列宾语_______从句,作___explained________的___宾语______.其中,第一个___that____可省,第二个_that______不能省.(2)翻译本句话:略(3)仿写：他解释说他并没有偷那个妇女的钱包,并说自己其实是在做好事.Heexplained(that)hedidn’tstealthelady’spurseandthathewasinfactdoingagooddeed.(1)在本句中划线部分应翻译成:感觉到它的引力正拉扯着我们仿写:当地震发生的时候,我感觉到整个大地在摇晃.Whentheearthquakehappened,Ifeelthewholeworldshaking.（2）asstrongapullastheearth’s,应翻译为:和地球上的引力一样强。表示倍数的方法有:a:A+be+倍数+as+形容词原级+as+B例句:Thistreeisthreetimesastallasthatone.Hisfatheristwiceasoldasheb:A+be+倍数+形容词比较级+than+B例句:TheYangtzeRiverisalmosttwicelongerthanthePearlRiver.Thenumberofstudentsinourschoolisthreetimeslargerthanthatintheirs.c:A+be+倍数+the+名词(size,length,amount)+of+B”例句:Thenewlybroadenedsquareis