Module3Unit2课件八年级英语下册

Module

3JourneytospaceUnit2Wehavenotfoundlifeonanyotherplanetsyet.LearningobjectsTounderstandthepassageaboutspacetravelinvolvingpresentperfecttense.Tolearnsomekeywordsandusefulexpressions.Tolearntousethefollowingpatterns:

Wehavejustreceivedamessage.Wehaven’tfoundlifeonanyotherplanetsyet.Astronautshavealreadybeentothemoon.

Lead

inManycountiresmakeeffortonMarsexploration(探索火星).Theprogramme”TalentShow”ispopulararoundtheworld.QuizWhatdoyouknowaboutMars?2.Marsisavery_______planet.A.hotB.cold1.Marsisthe_______planetfromtheSun.A.fourthB.fifthTheprogramme”TalentShow”ispopulararoundtheworld.QuizWhatdoyouknowaboutMars?4.ThesurfaceofMarsiscoveredwith______.A.snow.B.reddust(红尘)3.Marshastwo__________circlingaroundit.A.moonsB.rings

Lead

inLet’shaveafreetalk.1.HaveChinesebeentothemoon？2.Whowasthefirstastronautbeentothemoon?3.Havepeoplefoundlifeonotherplanets?4.Howlargeistheuniverse?5.Havetherebeenvisitorstotheearthformotherplatets?

Lead

inReadashortpassageaboutMarsexplorationandgettoknowhumanmakegreateffortinitfromthepasttimetonow.Readandfinishthetasks.12345FastreadingMatchtheheadingswitheachparagraph.Para.1____Para.2&3____Para.4____Para.5____A.Thescientists’progress(进程)B.Thescientists’questionsC.ThesolarsystemandtheuniverseD.ThelifeonearthandotherplanetsTip1:Payattentiontothekeywordsandthefirstsentence.ABCDCarefulreadingReadpara1andanswerthequestions1)Howlonghastherebeenlifeontheearth?2)Havescientistsdiscoveredlifeonotherplanets?Forhundredsofmillionsofyears.No,theyhaven’t.A.百万年B.千万年C.亿万年Tip2:Payattentiontothekeywordsandthelogicalwords(逻辑词).Putthewordsandexpressionsinorder.排序

(small→large)galaxyplanetsolarsystemstaruniverseCarefulreadingReadpara2&3universegalaxy→galaxiessolarsystemstarplanet(1)Howmanyplanetsgoaroundthesun?(2)Whatdoes“them”referto?(3)Whatdoes“that”referto?CarefulreadingReadpara21+7Tip3:注意代词them，that均指前文出现过的事物，且位置较近。Whatenvironmentdoeslifeontheearthneed?Lifeneedsair,water,sunshineandsoon.CarefulreadingReadpara3Thedistancethatthelightwalksinoneyear.Theyarefaraway.HowfarLightyear：Thestarslooksmall.Theirlighthastotravelformanyyearstoreachus.Canyoudrawapicturetoshowtherelationshipintheuniverse?你可以试着画出宇宙里的关系图吗？

theuniversetheGalaxy银河系thesolarsystem太阳系Howlargeistheuniverse?ThinkIsitpossibleforustoexplore(探索)thewholeuniverse?IMPOSSIBLE?I’mpossible，CarefulreadingReadpara4Scientistshavesentspaceships______Marsthemoonoutsidethesolarsystem??Weshouldbeproudofthem,especiallytheastronauts.Howgreatthescientistsare!CarefulreadingReadpara5UnderlinethequestionsScientistshavealwaysaskedthefollowingquestions.?Q1:Arewealone?Q2:Istherelifeoutthereinspace?Q3:Havetherebeenvisitorstotheearthfromotherplanets?Q4:Whyhasnoonecommunicatedwithus?Q5:...No,wedonotknowtheanswers...yet.Scientistsdon’tloseheartkeeptryingandworkhardDowehaveanswersforthesequestions?123451.Anyoneoutthere?2.Lifeontheearth3.Thesunandotherstars4.ThestarsatnightChooseatitle(标题).Anyoneoutthere?PostreadingTip4:Payattentiontothebeginningandtheending.注意首尾段para.1para.2Wherecanyoureadthispassage?A.NewspaperB.SciencemagazineC.StorybookWhichoneisabetterending,why?A.Wedonotknowtheanswer.B.Wedonotknowtheanswer…yet.

Post-readingTopic：_______________Para1.Wehavenotfoundlifeonanyother____________yet.Para2.The____________andtheGalaxy.Para3.Therearemanyother_________intheuniverse.Para4.Scientistshaveevensent_______totraveloutsidethesolarsystem.Para5.Scientists’__________________.总分总Anyoneoutthere?lifeMilkyWayplanetsspaceshipsquestions

Post-readingCompletethepassagewiththecorrectformofthewordsinthebox.communicateenvironmentnonesolarsystemuniverse

Istherelifeonotherplanets?Therearesevenotherplanetsinour(1)____________,but(2)______ofthemhasa(n)(3)____________likethatoftheearth.Spaceshipsfromtheearthhavedonesurveysoftheotherplanets,buttheyhavenotfoundanylifethere.Whyhasnoonefromotherplanetstriedto(4)_____________withus?Itistruethatscientistshavenotdiscoveredlifeonotherplanetsinthe(5)_________yet,butsomescientistsbelievethattheywillfinditsomeday.solarsystemnoneenvironmentcommunicateuniverseModule3JourneytospaceUnit2Wehavenotfoundlifeonanyotherplanetsyet?

Scientiststhinkthattherehasbeenlifeontheearthforhundredsofmillionsofyears.However,wehavenotfoundlifeonanyotherplanetsyet.

Theearthisaplanetanditgoesaroundthesun.Sevenotherplanetsalsogoaroundthesun.Noneofthemhasanenvironmentlikethatoftheearth,soscientistsdonotthinktheywillfindlifeonthem.Thesunanditsplanetsarecalledthesolarsystem,andoursolarsystemisasmallpartofamuchlargergroupofstarsandplanets,calledtheGalaxyortheMilkyWay.TherearebillionsofstarsintheGalaxy,andoursunisonlyoneofthem.ontheearth=onearth“在地球上；在世界上”

“围绕着...转”

Scientistshavealsodiscoveredmanyothergalaxiesintheuniverse.Theyareveryfarawayandtheirlighthastotravelformanyyearstoreachus.Sohowlargeistheuniverse?Itisimpossibletoimagine.ScientistshavesentspaceshipstotheplanetMarstotakephotos.Theyhaveevensentspaceshipstotraveloutsidethesolarsystem.However,nospaceshiphastravelledfarenoughtoreachotherstarsinourGalaxy.Scientistshavealwaysaskedthequestions:withsomanystarsintheuniverse,arewealone,oristherelifeoutthereinspace?Havetherebeenvisitorstotheearthfromotherplanets?Whyhasnoonecommunicatedwithus?Wedonoknowtheanswers...yet.communicatewithsb.“与某人交流”

1.Scientiststhinkthattherehasbeenlifeontheearthfor

hundredsofmillionsof

years.

科学家们认为地球上存在生命已有数亿年了。【例句】①________________anyrainforaweek.

已经一周没有下雨了。

②_______________greatchangesinthiscity.

这个城市已经有了很大的变化。

Therehasn’tbeenTherehavebeen【要点1】therehasbeen_____________“已经有...”(是therebe句型的现在完成时结构,用have还是has,要由其后的主语的单复数决定。）

2.Scientiststhinkthattherehasbeenlifeontheearthfor

hundredsofmillionsof

years.

科学家们认为地球上存在生命已有数亿年了。【要点2】hundredsofmillionsof_____________“数以亿计的”【拓展】常见的表达概数的短语：

hundredsof“数百,成百上千”

thousandsof“数千,成千上万”

millionsof“数百万”

billionsof“数十亿”注意:当hundred,thousand,million,billion前面有具体

数字修饰时,这些词后不加-s,也不与of连用,可

以被several,afew,many等修饰。

【例句】

①

China

isabigcountrywith

ofhistory.

中国是一个有数千年历史的大国。

②

Thereareabout

studentsintheplayground.

操场上大约有两千名学生。

③

Shehasreadmany

books.

她已经读了数百本书。thousands

of

years

twothousand

hundresof数量表达法构成例子模糊数量hundred/thousand/million等词的复数形式+ofhundredsof数百……，thousandsof数千……，millionsof数百万……，billionsof数十亿……具体数量不定冠词或数词+hundred/thousand/million等词的单数形式several/afewhundred几百，fivehundred五百，threethousand三千，ninemillion九百万(

)①Thereare

peopleinthezooonChildren’sDay.

A.twohundredsof

B.hundredsof

C.hundredof②这个大厅足够大，能容纳四千人。Thehallisbigenoughtohold

people.

fourthousand

B3.

Noneofthemhasanenvironmentlikethatoftheearth...

这些行星没有一颗有像地球那样的环境。&6&

【辨析】

none与noonenonenoone“没有一人,没有一个,一点儿也没有”“没有人”指人或物只能指人=nobody其后可以+of其后不+ofnoneof+不可数名词+谓语动词用单数;noneof+可数名词复数+谓语动词用单数/复数作主语时,谓语动词用单数常用于回答howmany/much引导的问句常用于回答who引导的问句Eg:①_________________seenthefilm.

我们中没有一个人看过这部电影。②Noone________aboutit.没有人了解此事。

③—_______helpedyoufinishthereport?

—谁帮你完成的这个报告？—__________.Ifinisheditbymyself.

—没有人,我自己完成的。Noneofushasknows

Who

Noone

Nonenone与no

onenonenoone“没有一人；没有一个；一点儿也没有”，可指代人也可指代物。“没有人”，只能用来指代人，与nobody同义。1.noneof后面接可数名词复数，作主语时，谓语动词用单、复数形式均可。2.noneof后面接不可数名词，作主语时，谓语动词要用单数形式。3.强调数量，可用来回答howmany/howmuch的提问。1.不能与of连用，作主语时，谓语动词要用单数形式。2.不强调数量，可用来回答who的提问。选词填空。(1)—Howmuchmoneydidyougiveher？—

(None/Noone).

(2)—Whoisintheroom？—

(None/Noone).

(3)—Howmanycakesarethereinthefridge？—

(None/Noone).

(4)

(None/Noone)writestomeoftenbutyou.

Noone

None

Noone

None

(5)Noneofus

(is/are)interestedinthestory.

(6)Noneofthemoney

(is/are)mine.

(

)(7)Wecouldn’tbuyanythingthatdaybecause

oftheshopswereopen.

A.noone

B.nothing

C.noneCis

is/are

4.However,nospaceshiphastraveledfarenoughtoreachotherstarsinourGalaxy.然而,还没有任何航天器飞行得足够远以到达我们的银河系中的其他恒星。【要点】enough

(副词)________“足够地”

(形容词)_________“足够的”(修饰名词,置于其前)(修饰形容词或副词,置于其后)Eg:①Thereare

inthefactory.

在这家工厂有足够的工人。②Hewalks

.他走得够快。③Heis

thebigbox.

他足够强壮能够搬动这个大盒子。enoughworkersfastenoughstrongenoughtocarryTip:

enough+time/money=time/money+enough【拓展】形容词/副词+enough+todosth."足够...可以做..."(1)他跑得足够快，可以赶上那辆校车。Heran

theschoolbus.

(

)(2)She’snotstrongenough

upthemountain.

A.toclimb

B.climbing

C.climb(

)(3)—MayIbeallowedtochooseasummercourse？—It’suptoyou.Youare

tomakeyourowndecision.

A.tooold

B.enoughold

C.oldenoughCAfastenoughtocatch

学以致用一、根据首字母或汉语提示填写单词。1.Plantingmoretreeswillmakethe

(环境)cleaner

andbetter.2.Theroomissoda