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2019-2020年高中英语人教版必修3Unit4Astronomy thescienceofthestarsperiod3教案1【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
1、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.BeforeweleftLiYanpingexplainedtomethattheforceofgravitywouldchangethreetimesonourjourneyandthatthefirstchangewouldbethemostpowerful.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.Whenwegetclosertothemoonweshallfeelitsgravitypullingusbutitwillnotbeasstrongapullastheearth’s.1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.________________________________________________________________________.2asstrongapullastheearth’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:____________________________________________________________________2nowthat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》P61-63及同步练习5---句型运用板块一.Thepullofgravitybecameverystrongwhenshelefttheearth’satmosphere.Hisweightisnormal.Itdisappearedwhenhewasinspace.HeisweightlessItwasverylightwhenhewasonthemoon.Heweighslessthanonearth二.
1.Thecrowdcheeredup
2.a.watchedthesunsettingb.watchedtheplantgrow
3.Nowthateverybodyishere
4.getthehangof
5.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.Heexplainedthathedidn’tstealthelady’spurseandthathewasinfactdoingagooddeed.
2.1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.WhentheearthquakehappenedIfeelthewholeworldshaking.
(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sizelengthamount+of+B”例句:Thenewlybroadenedsquareisfourtimesthesizeofthepreviousone3.翻译:略2nowthat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Nowthatyouarebusyletmedoitforyou.b:既然人都齐了咱们开始干吧Nowthateveryoneisherelet’sstartwork.4.amazed在句中是过去分词作形容词充当伴随状语句子成分.。