高中英语必修一教案-经典教学教辅文档.doc

Unit4Astronomy:thescienceofthestars
TPeriod1and2:Warmingupandreading
Warmingup:Lead-in
Goodmorning,class!Today,waregoingtotakeUnit4Astronomy:thescienceofthestars.Beforewereadthetext,let’sturntopage97andgetfamiliarizedwiththevocabularyfirst.Payattentiontothemakingoftheword.Studytheprefixes,rootsandsuffixesinthewords.
Playagametolearnthenamesandpositionsoftheplanets:
VenusisnexttoMercury.
Earthisthethirdplanet.
MarsisbetweenEarthandJupiter.
Neptuneisthefurthestplanetfromthesun.
SaturnisbetweenUranusandJupiter.
Mercuryisclosesttothesun.
II.Pre-reading
1.Lookingandsaying
Haveyoueverwonderedhowtheuniversebegan?WellI'msureyoumayhavemanyanswerstothisquestion,butIhaveonethatperhaps,youmaynothaveheardofyet.Iwillbegivingyoumytheoryonthissubject.Nowlookatthescreenandlistentometellingyousomethingexciting.
科学家流露：宇宙可能有两个
我们的宇宙和一个"隐藏的"宇宙共同"镶嵌"在"五维空间"中。在我们的宇宙初期，这两个宇宙发生了一次相撞变乱，相撞产生的能量生成了我们宇宙中的物资和能量。2.Talkingandsharing
Doyouknowhowtheuniversebegan?
Inthe1920sinCalifornia,astronomerEdwinHubbleobserveddistantgalaxiesusing
anextremelypowerfultelescope.Hemadetwomind-boggling(unbelievable)discoveries.
First,HubblefiguredoutthattheMilkyWayisn’ttheonlygalaxy.Herealizedthatfaint,cloud-likeobjectsinthenightskyareactuallyothergalaxiesfar,faraway.TheMilkyWayisjustoneofbillionsofgalaxies.
Second,Hubblediscoveredthatthegalaxiesareconstantlymovingawayfromeachother.Inotherwords,theuniverseisexpanding.Thebiggestthingthatweknowaboutisgettingbiggerallthetime.
Afewyearslater,BelgianastronomerGeorgesLemaîtreusedHubble‘samazingdiscoveriestosuggestananswertoabigastronomyquestion:“Howdidtheuniversebegin?”
III.Reading
1.Listeningandreadingaloud
Nowpleaselistentotherecordingandthenreadthetextaloud.Payattentiontohowthenativespeakerisreadingalongandwherethepausesarewithineachsentence.Iwillplaythetapetwiceandyoushallreadaloudtwice,too.
Readingandunderlining
Nextyouaretoreadandunderlinealltheusefulexpressionsorcollocationsinthepassage.Copythemintoyournotebookafterclassashomework.
CollocationsfromHOWLIFEBEGANONTH