人教版高中英语必修三第四单元课件

人教版

高中教学课件PPT人教版1Astronomy:thescienceofthestarsPeriodoneAstronomy:thesciencePeriod2Warmingup&reading人教版高中英语必修三第四单元课件3WarmingUpWarmingUp4Whatsubjectsdoyoulearnatschool?ChineseEnglishmathematicsphysicshistorygeographyphysicsbiologychemistrybrainstorminggeophysicsbiochemistryWhatsubjectsdoyoulearnat5astronomybiochemistrygeophysicsmedicine__________thescientificstudyoftreatmentofdiseasesandinjures__________thestudyofthechemistryoflivingthings_________thescientificstudyoftheearth’satmosphere,oceansandclimate__________thescientificstudyofobjectsinspace,suchasplanets,stars,cometsand“blackholes”astronomymedicinebiochemistrygeophysicsastronomybiochemistrygeophys6Astronomy

isthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,themoon,andstars),gas,anddustwithinit.

astronomerAstronomyisthescientificst7TheSolarsystem

eightplanetsmanycometsotherobjects

TheSolarsystemeightplanet8地球______木星______火星______水星________海王星_______F.冥王星_______G.土星________H.天王星_______I.金星________EarthJupiterMarsMercuryNeptunePlutoSaturnUranusVenus地球______F.冥王星_______EarthJu9Theearth’satmosphereThe

earth’s

atmospherenitrogenoxygendioxidecarbonsurface

vapourTheearth’satmosphereTheeart10Theearth’satmospherePresentationTheearth’satmospherePresenta11HOWLIFEBEGANONTHEEARTH?

HOWLIFEBEGANONTHEEARTH?

12PanguseparatestheskyfromtheearthPanguseparatestheskyfromt13NuwamakeshumanbeingsNuwamakeshumanbeings14TheBigBang

TheBigBang15Howmanypartscanthetextbedividedinto?Twoparts:Part1(para1)Part2(para2.3.4)Watermadeitpossibleforlifebegintodevelop.Thedevelopmentoflivingthings.Howmanypartscanthetextbe16EnergeticdustAsolidballExplodeatmospherewaterEnergeticdustAsolidballExpl17Watermadeitpossible________________________forlifetobegintodevelop.Watermadeitpossible_______18

21smallplantsinwater3greenplantsonland456forests7892shellfishandallsortsoffish4insects(onland)5amphibians(onlandandinwater)7reptiles(onland)8dinosaurs(onland)9mammals(onland)21smallplantsinwater3g19________madeitpossibleforlifetobegintodevelop.Water________madeitpossibleforl20Later_____________appeared.

landanimalsinsectsamphibiansLater_____________appeared.21Whenplantsgrewintoforests,______appearedforthefirsttime.reptilesWhenplantsgrewintoforests,22Somehugeanimals,called_________,developed.dinosaursSomehugeanimals,called____23Whendinosaursdisappeared,_________becamemoreimportant.mammalsWhendinosaursdisappeared,__24Acloudofdust

→

asolidball

→

presenceofwater

→

onthewater

→

shellfish&otherfish

→

plantsbegintogrowondryland

→

insectsandamphibiansappear→

retilesappear

→

dinosaursappear

→

mammalsappearThedevelopmentoflifesmallplantsgrowonthewaterappearshellfish&otherfishplantsbegintogrowondrylandinsectsandamphibiansappearretilesappeardinosaursappearmammalsappearAcloudofdust→asolidball25Exercises

Exercises

26Readparagraph2to4carefullyandfinishthefollowingform.Howlifebeganontheearth1.smallplantsinwater2.shellfish

andallsortsoffish3.greenplantsonland4.insects(onland)5.

amphibians(onlandandinwater)

6.forests7.reptiles(onland)8.dinosaurs(onland)9.mammals(onland)

10.smallcleveranimalswithhandsandfeet11.

human

Readparagraph2to4carefull27Becausethewaterremindedontheearth.Becauseplantsprovideoxygenforanimalstobreathe.Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.ThenameisPluto.Scientistsnowthinkitistoosmalltobecalledaplanet.Humanbeingscausedglobalwarming.ChecktheanswersonP271073849615212112.3.Becausethewaterremindedon28Groupwork

Whatproblemshavebeencausedbyhumanstotheearth?

Howtoprotecttheearthandmakeitabetterplacetoliveon?GroupworkWhatproblemshave29Asastudent,whatlittlethingscanwedofortheearth?DiscussionAsastudent,whatlittlethin30Whetherlifewillcontinueontheearthdependsonhumanbeings.Onlyifwecarewillwehelp,onlyifwehelpshallallbesaved!Whetherlifewillcontinueon31

Homework听写astronomy-----dioxide2.书上P28第４题1.solid;violent;astronomy;generallyspeaking;prevent…from;planet;development;explode;surface,methodConclusionHomeworkCo32人教版高中英语必修三第四单元课件33Astronomy:thescienceofthestarsPeriodtwoAstronomy:thesciencePeriod34Learningaboutlanguage

WarmingUp

Learningaboutlanguage

Warmi35Preparefor“DISCOVERINGUSEFULWORDSANDEXPRESSIONS”.

P.28Answerkeyforexercise1:-enceun-presentcertainviolentfairconfidentpaiddifferentlikepatientkindpresenceviolenceconfidencedifferencepatienceuncertainunfairunpaidunlikeunkindPreparefor“DISCOVERINGUSEFU36-al-istcultureartglobephysicsuniversechemistryagriculturebiologymathematicsscienceculturalglobaluniversalagriculturalmathematicalartistphysicistchemistbiologistscientist-al-istcultureartglobephysicsu37CACBAnswerkeyforexercise2:Answerkeyforexercise3:fundamental,astronomy,gavebirthto,existed,Asaresult,atoms,prevent…from,puzzleCACBAnswerkeyforexercise38emotionalwordscalmwordsAnswerkeyforexercise4:violentangryrude

shockedexcited

crazypatientgentlerelaxingkindeasy-goingcalmemotionalwordscalmwordsA39Presentation

Presentation

40

主语从句

（NounClausesastheSubject）

定义：用作主语的从句叫主语从句，它是名词性从句之一。引导主语从句的连接词有：连词that,whether；连接代词who,what和which；连接副词when,where,how和why。主语从句

（NounClausesastheSu41用法：

1)由what等代词引起的主语从句：

Whattheteachersaidtodaywasquiteright.

老师今天说的话是十分正确的。用法：1)由what等代词引起的主语从句：422)由连词that引起的主语从句：

Thattheyarebadlyinneedofhelpisquiteclear.

他们急需帮助，这是十分明显的。

但是这类句子在大多数情况下会放到整个句子的后部去，而用代词it作形式主语。2)由连词that引起的主语从句：433)由连接代词或连接副词以及whether引起的主语从句。

Whethertheywillsellthehouseisnotyetdecided.

他们是否卖掉这所房子还没有决定。3)由连接代词或连接副词以及whether引起的主语44

4)whatever,whoever也可引导主语从句。

Whateverwassaidheremustbekeptsecret.

这里说的话都应当保密。

Whoevermakesmistakesmustcorrectthem.

凡犯了错误的人都必须改正。4)whatever,whoever也可引导主语从45

注意:

上述例句中的主语从句都是放在句首,但有时为了使句子结构平衡,避免“头重脚轻”,常用it

作形式主语,而把从句放在后面。例如:

Itisapitythatshehasmadesuchamistake.

她犯了这样一个错误,真是遗憾。注意:上述例句中的主语从句都是放在句首,但有时为了46这样就构成了下面一些常用句型:

1)Itis+adj./n.+从句

Itisapity/shamethat...遗憾的是……

Itispossiblethat...很可能……

Itisunlikelythat...不可能……

2)It+不及物动词+从句

Itseems/appearsthat...似乎……

Ithappenedthat...碰巧……这样就构成了下面一些常用句型:47

3)It+be+过去分词+从句

Itissaidthat...据说……

Itisknowntoallthat...

众所周知……

Itisreportedthat...据报道……

Itisbelievedthat...

据信……;人们相信……

Itissuggestedthat...有人建议……

3)It+be+过去分词+从句48Itmustbepointedoutthat...

必须指出……Ithasbeenprovedthat...已证明…….

如:Itisbelievedthatatleastascoreofbuildingsweredamagedordestroyed.

据信,至少有二十座楼房遭到破坏或彻底毁掉。Itmustbepointedoutthat495).用于Itisimportant/natural/necessary/impossiblethat...句型中,主语从句应使用虚拟语气,谓语动词用\“should+动词原形\”的形式,should有时有感情色彩。5).用于Itisimportant/na50Exercises

Exercises

511._____youdon’tlikehimisnoneofmybusiness.2._____hesaidatthemeetingastonishedeverybodypresent.3.________the2000OlympicGameswillbeheldinBeijingisnotknownyet.4.________we’llgocampingtomorrowdependsontheweather.5.________leavestheroomlastoughttoturnoffthelights.ThatWhatWhetherWhetherWhoever1._____youdon’tlikehimi52

6.___isafactthatEnglishisbeingacceptedasaninternationallanguage.7.Itworriedherabit____herhairwasturninggrey.8.TheForeignMinistersaid,“__isourhopethatthetwosideswillworktowardspeace.”

9.AfterYangLiweisucceededincirclingtheearth,____ourastronautsdesiretodoiswalkinspace.ItthatItwhat6.___isafactthatEngl531.AfterYangLiweisucceededincirclingtheearth,___ourastronautsdesiretodoiswalkinspace.(高考真题)A.whereB.whatC.thatD.how解析:what引导主语从句,在从句中做do的宾语高考链接1.AfterYangLiweisucceeded542.Theotherday,mybrotherdrovehiscardownthestreetat__Ithoughtwasadangerousspeed.(高考真题)A.asB.whichC.whatD.that解析:Ithought是插入语,可以把它去掉不考虑.what引导宾语从句,在从句中作主语.宾语从句作at的宾语.2.Theotherday,mybrotherd553.___intheregulationsthatyoushouldnottellotherpeoplethepasswordofyouremailaccount.（高考真题）

A.WhatisrequiredB.WhatrequiresC.ItisrequiredD.Itrequires解析:“Itisrequiredthat…”是一个固定句式，it作形式主语,that引导的从句为真正的主语。3.___intheregulationsthat564.___the2000OlympicGameswillbeheldinBeijingisnotknownyet.[高考真题]A.WheneverB.IfC.WhetherD.That答案是C。“2000年奥林匹克运动会是否在北京举行还不知道。”4.___the2000OlympicGames575.___hesaidatthemeetingastonishedeverybodypresent.[高考真题]A.WhatB.ThatC.ThefactD.Thematter答案是C。“他在会上的发言使到会的每一个人都感到惊讶。”what表示“(所说的话)”,相当于Thewords(that+/which)hesaidatthemeeting…5.___hesaidatthemeeting586.___leavestheroomlastoughttoturnoffthelight.[高考真题]A.AnyoneB.ThepersonC.WhoeverD.Who答案是C。“谁最后离开房间应关灯。”whoever意为“无论谁”,引导主语从句,并在从句中作主语。若选A或B,anyone或theperson后应回who,使其成为由who引导的定语从句,修饰anyone或person.注：这些词还可引导副词性从句。6.___leavestheroomlastou597.___hehasbecomearichmanisknowntoallinourtown.[高考真题]A.BecauseB.ThatC./D.What答案是B。“他变成了富翁,这是我们镇上下班人人皆知的事。”根据句意,须用that引导的主语从句。that在从句中不担任任何成分,只起连接作用.7.___hehasbecomearichma608.___Ineedismoretime.A.ThatB.WhatC./D.Which答案是B。“我所需要的是更多的时间。”根据题意,应选what引志的主语从句,what在职从句中作宾语(what=thethingwhich).主语从句的关联词不能省略,故排除C。which表示“哪一个”,that无词义,都与句意不符,故排除。8.___Ineedismoretime.答案是61Conclusion

Conclusion

62Homework

1.Makeuseofdifferentlearningresourcestohaveaninquirystudyofsubjectclause,andsummarizetherulesofit.2.DoWorkbookExx.1-3onP.64.Homework1.Makeuseofdiffe63人教版高中英语必修三第四单元课件64Astronomy:thescienceofthestarsPeriodthreeAstronomy:thescienceofthe65UsingLanguage人教版高中英语必修三第四单元课件66UsingLanguage

WarmingUp

UsingLanguage

WarmingUp

671.WhoisthefirstChineseastronauttogointospace?2.Whatwasthedatewhenhecircledtheearthinspace?A.November15,2003B.October15,2003C.September17,2004D.December17,20043.Whichcountryfirstsentpeopleuptospace?4.Sofar,howmanycountrieshavesucceededinsendingpeopleuptospace?5.Whoisthefirstmanlandingonthemoon?YangLiweiATheSovietUnionThreeArmstrong(America,1969)1.WhoisthefirstChinese68Presentation

Presentation

69AVISITTOTHEMOONAVISITTOTHEMOON70rocketrocket711.Whohadachancetotraveltothemoon?2.Howdidtheytraveltothemoon?3.Wasthereanythingchangedontheirjourney?Questions

1.Whohadachancetotravel724.Howmanytimeswouldtheforceofgravitychangeontheirjourney?When?Whichchangewouldbethemostpowerful?Whatabouthisweight?Questions

4.Howmanytimeswouldthefo73OnthemoonThechangeofgravityInspaceVerystrongDisappeared

VerylightLeavetheearthOnthemoonThechangeofgravi74OntheearthInspaceOnthemoonTheweightchangedHebecameveryheavy.Hehadnoweightandcouldfloatweightlesslyaroundintheirspaceship.Hewasaboutone-sixthofhisweightontheearth.Readthepassageandfillintheform.OntheearthInspaceOnthemoo755.whathappenedtohimwhenhetriedtostepforward?6.whywasreturningtotheearthveryfrightening?7.Howdidhefeel?Questions

5.whathappenedtohimwhenh76LastmonthIvisitedthemoonwithmyfriend.Beforeweleft,Iwastoldtheforceofg_____wouldchangethreetimesonourjourney.Thenwetookoff.Aswelefttheearth,Ibecameveryh_______.Graduallytheweightl_______.WhenIwasinspace,itd__________.Wef_______weightlesslyinthecabinandIc________.WhenIwasonthemoon,Iwassurprisedtofindoutevenwalkingneedslotsofpracticen______gravitychanged.Thereturningoftheearthwasveryf_________.Wewereamazedtowatchfireb________ontheoutsideoftheship.gravityheavylesseneddisappearedfloatedcheeredupnowthatrighteningbreakoutFillintheblanksLastmonthIvisitedthemoon77Discussion?Ifyouwanttovisitthemoon,whatthingsyoumustprepareandwhatkindsofqualitiesyoushouldhave?Discussion?Ifyouwanttovisi781.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。Languagepoints1.LastmonthIwasluckye79

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.alongenoughholidayenough的用法:alongenoughhol802.Thenwewere

off.

随后我们就启程了。

beoff=setoff出发；动身

Iamofftoday.

我今天不用上班。

Weare

offtoday.

今天我们不上班/今天我们不开张。

2.Thenwewereoff.81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；还清与off相关的短语:getoff下车823.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.3.Whenwegetclosertoth834.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____________.Thecrowdcheereduptotheconcertcheerherup4.cheerup:欢呼，喝彩，感到高兴，当看到球队的到841).“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。

1).“A+be+倍数+as+形容词原级+852).“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。2).“A+be+倍数+形容词比较级+tha863).“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。3).“A+be+倍数+the+名词87

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.经过实验，这种细胞已经变得有那种细胞的三倍大了．886....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。6....walkingdoesneedab89Translation: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．Translation:907.Wewatched,amazedasfirebrokeout

ontheoutsideofthespaceshipastheearth’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。7.Wewatched,amazedasfireb91

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

fire

broke

out

in

his

house

last

night.

昨晚他家里失火了。1)战争爆发92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;说话不算数与break相关的短语:93Exercises

Exercises

94translation1．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______________solarsystemintimepreventfromdependoncheerupnowthatspreadgenerallyspeakingaswellasmakeatripintospacetranslation1．太阳系9511．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/goesbybedifferentfromcooldownweightlesslyglobalwarminggravity11．熟悉，掌握_____________g9621．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…fromwithintheirbodymethodsofdoingsth21．产卵_____________laye97HomeworkCollectpassagesaboutgravity.Prepareforspeaking.Conclusion

HomeworkCollectpassagesabou98附赠材料：怎样认真规划课堂上的每一分钟

假如你现在走进一位高效教师的课堂,毫无意外,你会看到学生一定正在忙着学习。这些学生虽然不一定整齐划一地干同样的事情,但他们手头一定有事做,而不会坐在课桌前发呆。相对地,假如你现在走进一位低效教师的课堂,你可能会发现并不是所有的学生都分配了学习任务,总有那么几个学生坐在椅子上无所事事。他们或许在打瞌睡,或许在做些违反课堂纪律的事情。附赠材料：99总之,他们不是老老实实地坐在座位上听讲,而是急不可耐地挨过上课时间，显然,你已经知道,从上课铃到下课铃的整个课堂时段中,只有那些高效教师才能保持课堂不被琐事中断,并且保证学生能够集中注意力。在高效教师的课堂上,没有一分钟被浪费,没有学生无事可做。也正是因为这个原因,高效的教师很少遇到有关课堂纪律的问题。那么,高效教师是如何让整个课堂从头到尾一直保持饱满的状态呢?他们仔细规划课堂上的每一分钟,以保证没有时间被浪费;他们仔细规划讲课过程,力求简明扼要(因为他们知道长时间维持学生的注意力是件很不容易的事。)他们为领先的学生着想,他们也为后进的学生着想。总之,他们不是老老实实地坐在座位上听讲,而是急不可耐地挨过上100是的,教学是一件很费心思的事情,世界上不可能存在一种万能的教学方法,至少我还没听说过那些低效的教师在课堂上往往只是简单地给全体学生布置一项任务(而且很可能没有仔细考虑自己布置的任务是不是学生感兴趣的或是需要的),然后要求学生用二十分钟完成。同样,不用亲历现场你也能猜到,有些学生五分钟就能完成任务,而这段时间里还有些学生甚至都没有开始,总有些学生无法在二十分钟内完成任务因此,这个二十分钟的规定会带来课堂纪律的问题。教师需要不断提醒学生集中注意力,但有的学生会抱怨自己还没听懂,而那些提前完成的学生则会感到无聊,并且着急地等着新任务。是的,教学是一件很费心思的事情,世界上不可能存在一种万能的教101

课程在这里,我想讲几点最关键的策略,以帮助教师在课堂上合理安排学生活动。今天,我们的主题简短、明确并易于实践。目标如下:(1)帮助教师了解当学生没有事情可做时,会出现什么状况;(2)给教师提供几个规划课堂的好方法首先,以这几个问题开始●你是否曾经在给学生布置任务时,要求所有人在同样的时间里完成?你是否曾注意到,布置任务时要求的时间越长,有些学生磨蹭的时间就越长?你是否曾注意到,有些学生能够立刻着手行动,并且完成的速度也很快课程102你是否曾注意到,有些学生再怎样努力,也无法在规定时间内完成任务。你是否曾注意到,学生做练习的时候,往往也是最容易出现课堂纪律问题的时候。比如,有些学生会在完成自己的任务之后,询问接下来要做什么,有些学生没有专心完成课堂任务,而是做些违纪动作,还有些学生不停地抱怨自己不明白要做什么？●你是否曾遇到过这种情形,离下课还有一点时间时,你对学生说:“如果你们保持安静,我就不会再布置更多的任务了。”学生会有哪些反应?你是否曾发现自己预先安排的内容已经讲完了,却还没到下课时间,于是决定给学生布置课堂任务来填补这段空白,此时学生有哪些反应?你是否曾注意到,有些学生再怎样努力,也无法在规定时间内完成任103以上这些问题,我们或多或少都曾经历过。我们也都知道,如果在课堂上学生没有事情可做的话,他们就会自己找事。而且往往学生自己找来的事都不会是什么好事。教师在管理课堂时,遇到的很大一个问题就是时间管理。优秀的课堂管理者会努力避免在课堂上出现令学生感到无所事事的情形。从上课铃到下课铃的整个课堂时间里,他们会保证学生的注意力一直在学习上,从开始上课直到下课离开,都不会有人闲下来。以上这些问题,我们或多或少都曾经历过。我们也都知道,如果在课104管好课堂时间的五点建议1.计划充分。教师要为课堂教学准备出足够的内容(要有意义的,而不是打发时间用的内容),每次上课时准备好的内容都应该比实现计划教授的内容多一些,以保证每堂课的内容都是充分的。2.教师一上课就应该立刻开始教学活动,直到下课学生离开教室才结束。3.事先准备一些简短、有趣的教学任务。如果需要在课堂上布置任务,比如需要耗时三十分钟的短文写作,可以把整体任务分解成几个更小的部分,并且带领学生一步一步完成每个部分。记住,这种简短、有趣的任务要比一次需要耗费很长时间的任务更能吸引学生的注意力。管好课堂时间的五点建议1054.每次在课堂上给学生布置任务时,要事先想好如何应对那些很快就完成任务的学生。同时,要注意提醒那些动作缓慢,迟迟没有动手的学生。5.做好准备。备课时就要准备妤课堂材料。这样,在讲课的时候,才能顺利地从一个主题过渡到下一个主题,不会因冷场而出现空闲时间。4.每次在课堂上给学生布置任务时,要事先想好如何应对那些很快106

人教版

高中教学课件PPT人教版107Astronomy:thescienceofthestarsPeriodoneAstronomy:thesciencePeriod108Warmingup&reading人教版高中英语必修三第四单元课件109WarmingUpWarmingUp110Whatsubjectsdoyoulearnatschool?ChineseEnglishmathematicsphysicshistorygeographyphysicsbiologychemistrybrainstorminggeophysicsbiochemistryWhatsubjectsdoyoulearnat111astronomybiochemistrygeophysicsmedicine__________thescientificstudyoftreatmentofdiseasesandinjures__________thestudyofthechemistryoflivingthings_________thescientificstudyoftheearth’satmosphere,oceansandclimate__________thescientificstudyofobjectsinspace,suchasplanets,stars,cometsand“blackholes”astronomymedicinebiochemistrygeophysicsastronomybiochemistrygeophys112Astronomy

isthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,themoon,andstars),gas,anddustwithinit.

astronomerAstronomyisthescientificst113TheSolarsystem

eightplanetsmanycometsotherobjects

TheSolarsystemeightplanet114地球______木星______火星______水星________海王星_______F.冥王星_______G.土星________H.天王星_______I.金星________EarthJupiterMarsMercuryNeptunePlutoSaturnUranusVenus地球______F.冥王星_______EarthJu115Theearth’satmosphereThe

earth’s

atmospherenitrogenoxygendioxidecarbonsurface

vapourTheearth’satmosphereTheeart116Theearth’satmospherePresentationTheearth’satmospherePresenta117HOWLIFEBEGANONTHEEARTH?

HOWLIFEBEGANONTHEEARTH?

118PanguseparatestheskyfromtheearthPanguseparatestheskyfromt119NuwamakeshumanbeingsNuwamakeshumanbeings120TheBigBang

TheBigBang121Howmanypartscanthetextbedividedinto?Twoparts:Part1(para1)Part2(para2.3.4)Watermadeitpossibleforlifebegintodevelop.Thedevelopmentoflivingthings.Howmanypartscanthetextbe122EnergeticdustAsolidballExplodeatmospherewaterEnergeticdustAsolidballExpl123Watermadeitpossible________________________forlifetobegintodevelop.Watermadeitpossible_______124

21smallplantsinwater3greenplantsonland456forests7892shellfishandallsortsoffish4insects(onland)5amphibians(onlandandinwater)7reptiles(onland)8dinosaurs(onland)9mammals(onland)21smallplantsinwater3g125________madeitpossibleforlifetobegintodevelop.Water________madeitpossibleforl126Later_____________appeared.

landanimalsinsectsamphibiansLater_____________appeared.127Whenplantsgrewintoforests,______appearedforthefirsttime.reptilesWhenplantsgrewintoforests,128Somehugeanimals,called_________,developed.dinosaursSomehugeanimals,called____129Whendinosaursdisappeared,_________becamemoreimportant.mammalsWhendinosaursdisappeared,__130Acloudofdust

→

asolidball

→

presenceofwater

→

onthewater

→

shellfish&otherfish

→

plantsbegintogrowondryland

→

insectsandamphibiansappear→

retilesappear

→

dinosaursappear

→

mammalsappearThedevelopmentoflifesmallplantsgrowonthewaterappearshellfish&otherfishplantsbegintogrowondrylandinsectsandamphibiansappearretilesappeardinosaursappearmammalsappearAcloudofdust→asolidball131Exercises

Exercises

132Readparagraph2to4carefullyandfinishthefollowingform.Howlifebeganontheearth1.smallplantsinwater2.shellfish

andallsortsoffish3.greenplantsonland4.insects(onland)5.

amphibians(onlandandinwater)

6.forests7.reptiles(onland)8.dinosaurs(onland)9.mammals(onland)

10.smallcleveranimalswithhandsandfeet11.

human

Readparagraph2to4carefull133Becausethewaterremindedontheearth.Becauseplantsprovideoxygenforanimalstobreathe.Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.ThenameisPluto.Scientistsnowthinkitistoosmalltobecalledaplanet.Humanbeingscausedglobalwarming.ChecktheanswersonP271073849615212112.3.Becausethewaterremindedon134Groupwork

Whatproblemshavebeencausedbyhumanstotheearth?

Howtoprotecttheearthandmakeitabetterplacetoliveon?GroupworkWhatproblemshave135Asastudent,whatlittlethingscanwedofortheearth?DiscussionAsastudent,whatlittlethin136Whetherlifewillcontinueontheearthdependsonhumanbeings.Onlyifwecarewillwehelp,onlyifwehelpshallallbesaved!Whetherlifewillcontinueon137

Homework听写astronomy-----dioxide2.书上P28第４题1.solid;violent;astro