高中英语人教版必修3课件：《Unit 4 Astronomy the science of the stars》period 3

Astronomy:thescienceofthestarsPeriodthree,UsingLanguage,UsingLanguageWarmingUp,1.WhoisthefirstChineseastronauttogointospace?2.Whatwasthedatewhenhecircledtheearthinspace?A.November15,2003B.October15,2003C.September17,2004D.December17,20043.Whichcountryfirstsentpeopleuptospace?4.Sofar,howmanycountrieshavesucceededinsendingpeopleuptospace?5.Whoisthefirstmanlandingonthemoon?YangLiweiATheSovietUnionThreeArmstrong(America,1969),Presentation,AVISITTOTHEMOON,rocket,1.Whohadachancetotraveltothemoon?2.Howdidtheytraveltothemoon?3.Wasthereanythingchangedontheirjourney?Questions,4.Howmanytimeswouldtheforceofgravitychangeontheirjourney?When?Whichchangewouldbethemostpowerful?Whatabouthisweight?Questions,OnthemoonThechangeofgravityInspaceVerystrongDisappearedVerylightLeavetheearth,OntheearthInspaceOnthemoonTheweightchangedHebecameveryheavy.Hehadnoweightandcouldfloatweightlesslyaroundintheirspaceship.Hewasaboutone-sixthofhisweightontheearth.Readthepassageandfillintheform.,5.whathappenedtohimwhenhetriedtostepforward?6.whywasreturningtotheearthveryfrightening?7.Howdidhefeel?Questions,LastmonthIvisitedthemoonwithmyfriend.Beforeweleft,Iwastoldtheforceofg_____wouldchangethreetimesonourjourney.Thenwetookoff.Aswelefttheearth,Ibecameveryh_______.Graduallytheweightl_______.WhenIwasinspace,itd__________.Wef_______weightlesslyinthecabinandIc________.WhenIwasonthemoon,Iwassurprisedtofindoutevenwalkingneedslotsofpracticen______gravitychanged.Thereturningoftheearthwasveryf_________.Wewereamazedtowatchfireb________ontheoutsideoftheship.gravityheavylesseneddisappearedfloatedcheeredupnowthatrighteningbreakoutFillintheblanks,Discussion?Ifyouwanttovisitthemoon,whatthingsyoumustprepareandwhatkindsofqualitiesyoushouldhave?,1.LastmonthIwasluckyenoughtohaveachancetomakeatripintospacewithmyfriendLiYanping,anastronomer.上个月我有幸得到一个机会同我的朋友，一位宇航员李彦平一道去太空旅行。Languagepoints,enough的用法:1）形容词作定语：enough用在名词前、后都可以。Ihaveenoughtimetodothework./Ihavetimeenoughtodothework.我有足够的时间做此项工作。2）用作副词修饰形容词或副词表示程度:enough一般放在形容词或副词的后边。longenough,fastenough,quicklyenough等。但一般不说：enoughlong,enoughfast,enoughquickly.Theboyisoldenoughtogotoschool.这孩子到上学的年龄了。3）用作副词修饰动词时也需放在动词之后。Themeatisnotcookedenough.肉炖得不够熟。IfIhad_____________________(足够长的假期),I’dvisitEurope,stoppingatallthesmallinterestingplaces.alongenoughholiday,2.Thenwewereoff.随后我们就启程了。beoff=setoff出发；动身Iamofftoday.我今天不用上班。Weareofftoday.今天我们不上班/今天我们不开张。,与off相关的短语:see...off送行jumpoff跳下giveoff散发showoff炫耀getoff下车takeoff脱下turnoff关闭payoff付清；还清,3.Whenwegetclosertothemoon,weshallfeelitsgravitypullingus,butitwillnotbeasstrongapullastheearth’s.当我们更接近月球时，就会感到月球的引力在拉我们。但是，月球的引力不像地球的引力那么大。getcloseto靠近，接近，指动态变化becloseto距......近，指状态Theschoolisclosetothepostoffice.,4.cheerup:欢呼，喝彩，感到高兴，使高兴。当看到球队的到来，人群欢呼起来。_____________________whentheysawtheteamarrive.他带她去听音乐会来使她高兴。Hetookher_____________to____________.Thecrowdcheereduptotheconcertcheerherup,1).“A+be+倍数+as+形容词原级+as+B”.Thistreeisthreetimesastallasthatone.Hisfatheristwiceasoldashe.5.ButwhenItriedtostepforward,IfoundIwascarriedtwiceasfarasontheearthandfellover.而当我试着向前迈步的时候，我发觉我被送出很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。,2).“A+be+倍数+形容词比较级+than+B”TheYangtzeRiverisalmosttwicelongerthanthePearlRiver.长江差不多比珠江长两倍。Thenumberofstudentsinourschoolisthreetimeslargerthanthatintheirs.我们学校的学生数量比他们学校的多三倍。,3).“A+be+倍数+the+名词(size,length,amount)+of+B”Thenewlybroadenedsquareisfourtimesthesizeofthepreviousone.新扩建的广场是未扩建时的四倍大。,经过实验，这种细胞已经变得有那种细胞的三倍大了．1.Aftertheexperiment,thiscellhasbecomethreetimesaslargeasthatone.2.Aftertheexperiment,thiscellhasbecometwicelargerthanthatone.3.Aftertheexperiment,thiscellhasbecomethreetimesthesizeofthatone.,6....walkingdoesneedabitofpracticenowthatgravityhaschanged.......既然引力改变了，走路也的确需要练一练了。nowthat同since相似，语气较弱，强调人们已知的事实。,Translation:1.既然你忙,就让我给你做吧。Nowthatyouarebusy,letmedoitforyou.2.既然人都齐了,咱们开始干吧。Nowthateveryoneishere,let’sstartwork．,7.Wewatched,amazedasfirebrokeoutontheoutsideofthespaceshipastheearth’sgravityincreased.我们惊奇地看着，随着引力的增加，宇宙飞船的外层燃烧起来了。amazed是过去分词，此处做状语用他进来的时候没有人注意到.Hecamein_________.breakout(战争,争吵,疾病等)爆发unnoticed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.美国内战爆发于1861年。2)发生争吵Aquarrelbrokeoutbetweenthem.他们之间发生了争吵。3)(火灾)发生A firebroke outin his house last night.昨晚他家里失火了。,与break相关的短语:breakdown打破;毁掉;破除;坍塌;坏掉breakin破门而入;打断breakawayfrom脱离政党;打破陈规breakthrough突围;突破breakup打碎;拆散;分裂;分解breakone'sword/promise食言;说话不算数,Exercises,translation1．太阳系_____________2．及时，总有一天_____________3．阻止，制止______________4．依靠，信赖______________5．感到高兴______________6．既然，由于______________7．蔓延______________8．一般而言______________9．除了……之外还______________10.作一次太空旅行______________solarsystemintimepreventfromdependoncheerupnowthatspreadgenerallyspeakingaswellasmakeatripintospace,11．熟悉，掌握_____________12．突发，爆发_____________13．增多，使繁殖_____________14．大气层，气氛_____________15．随着时间的流逝____________16．与……不同______________17．冷却_______________18．失重地________________19．全球变暖________________20．地心引力________________getthehangofbreakoutmultiplyatmosphereAstimewent/goesbybedifferentfromcooldownweightlesslyglobalwarminggravity,21．产卵_____________22．在表面上_____________23．两倍远_____________24．非常幸运_____________25．向某人解释____________26．靠近，接近______________27．出发，动身_______________28．促进……的发展________________29．从他们的体内________________30．做某事的方法________________layeggsonitssurfacetwiceasfarasluckyenoughexplaintosbgetclosetobeoffencouragethedevelopmentof…fromwithintheirbodymethodsofdoingsth,HomeworkCollectpassagesaboutgravity.Prepareforspeaking.Conclusion