【突破极限】人教版高中英语必修3教学课件： Unit 4 Astronomy the science of the stars Unit 4 Section Four1.ppt

unit4astronomy thescienceofthestars usinglanguage avisittothemoon onesmallstepforaman onegiantleapformankind neilarmstrong 1930 usa helandedonthemooninjuly1969 这是个人迈出的一小步 但却是人类迈出的一大步 whowasthefirstmanlandingonthemoon spacewalk lookatthepictures spaceship float zerogravity weightless wevisitedthemooninourspaceship para 2 beforeweleft liyanpingexplainedtome themostpowerful para 1 butreturningtotheearthwasveryfrightening para 4 whenwegotthere iwantedtoexploreimmediately para 3 fastreading readthepassagequicklyandtrytofindthetopicsentenceofeachparagraph theforceofgravitywouldchangefourtimesontheirjourney 2 whentheywereonthemoon theywouldnotfeelthegravitybecausetherewasnogravityonthemoon 3 sincethegravityhaschanged theirwalkdidn tneedalotofpractice 4 avisittothemoon wasnotarealstorybutsciencefiction f f f t trueorfalsequestions detailedreading readandthendescribethethreewaysinwhichgravitychangedforliyanpingandhowhisweightchanged 1 thepullofgravitybecameverystrongashelefttheearth satmosphere hisweightisnormal 2 itdisappearedwhenhewasinspace heisweightless 3 itwasverylightwhenhewasonthemoon heweighslessthanonearth 1 lastmonthiwasluckyenoughtohaveachancetomakeatripintospacewithmyfriendliyanping anastronomer languagepoints haveachancetodo有机会做某事ihopeicanhaveachancetotraveltospace givesbachance给某人机会couldyougivemeonemorechance bychance byaccidentidiscovereditbychance 2 whenwegetclosertothemoon weshallfeelitsgravitypullingus butitwillnotbeasstrongapullastheearth s getcloseto靠近 接近 指动态变化becloseto距 近 指状态theschoolisclosetothepostoffice 家长应该阻止孩子接近火 parentsshouldpreventchildrenfromgetingclosetofire as adj a 可数名词单数 asas adj 不可数名词或可数名词复数 as和 一样heaskedmeasdifficultaquestionasyours ihaveasmanyfriendsashe 3 icheeredupimmediatelyandfloatedweightlesslyaroundinourspaceshipcabinwatchingtheearthbecomesmallerandthemoonlarger cheerup i msureyou llfeelbettertomorrow hetriedtocheerthemupwithfunnystories 1 a be 倍数 as 形容词原级 as b thistreeisthreetimesastallasthatone hisfatheristwiceasoldashe 4 butwhenitriedtostepforward ifoundiwascarriedtwiceasfarasontheearthandfellover theyangtzeriverisalmosttwicelongerthanthepearlriver 2 a be 倍数 形容词比较级 than b 3 a be 倍数 the 名词 size length amount of b thenewlybroadenedsquareisfourtimesthesizeofthepreviousone 考例 ournewlibraryis theoldone a fourtimesaslargeasb fourtimesthesizec fourtimeslargerd fourtimeslargerthanthat 5 walkingdoesneedabitofpracticenowthatgravityhaschanged nowthat同since相似 语气较弱 强调人们已知的事实 后跟句子 translation 既然你有机会 就应该充分利用它 nowthatyou vegotachance youshouldmakefulluseofit 6 wewatched amazedasfirebrokeoutontheoutsideofthespaceshipastheearth sgravityincreased breakout它与happen takeplace comeout等词的用法一样 是不及物动词 不能带宾语 不能用于被动语态 1 战争爆发theamericancivilwarbrokeoutin1861 2 发生争吵aquarrelbrokeoutbetweenthem 3 火灾 发生afirebrokeoutinhishouselastnight breakdown 精神 身体 崩溃 谈判等 破裂breakin破门而入 打断 与break相关的短语 breakthrough突围 突破 breakup打碎 解散 ifyouweregoingtothemoon whatthingswouldyouneed why thingsneededonthemoon oxygentanks spacefood spacesuit water step3 discussion spaceship qu