仁爱版九年级英语上册课件：Unit-4-Topic-2-Section-C

Unit4AmazingScience

Topic2I’mexcitedaboutthethingsthatwillbediscoveredinthefuture.

SectionC

Doyouwanttobeafilmstar?anastronaut?aboss?

apoliceman?Answermyquestionsloudly!!

anactor?apolicewoman?Lead-in

LearningAims1.KnowmoreaboutMarsandmotivatethestudents’interestinexploringthespace.2.Weshouldlearnkeywordsandsentences:

diameter,storm,benamedaftersb.,goaround,atadistanceof…倍数+as…as…etc3.Improvethestudents’readingskills.Pre-reading1.PredictwhichsentencesaretrueaboutMars____1).Marslookslikearedball.____2).ThetemperatureonMarsisveryhigh.____3).Marsismuchlargerthantheearth.____4).Marsistoofarawayforustoreach.

TFFTpredict2.ListentotheMp3andcheckthem.While-reading

Readthetextandfinishthefollowingtasks.Task1.Skimthetexttograspitsmainidea

Task2.Scanthetextandcompletethemind-mapofthistextordo1b.Task3.Explainsomeimportantlanguagepointsandsentences.1.Canyougivethepassageatitle?3.What’sthemainideaofthispassage?Mars2.What’sthearticletypeofthepassage?Expositorywriting(说明文）IttellsusaboutMars,includingitsname,diameter,distance,shape,climate,gravity,temperatureanddistanceetc.Task1.SkimthetexttograspitsmainideaTask2Scanthetextandcompletethemindmap.namecolorshapediameterclimategravitytemperaturedistance????????air?Fourstudentsagrouptoworkandfindouttheanswersinthetext,writethemdownonthepaper.

WhatcanyoulearnaboutMars?namecolorshapediameterclimategravitytemperaturedistanceMarsRedandorangeballBetweenminus138degreescelsiusand28degreescelsiusair0.13%oxygenstormTwo-fifths53%8monthssolarsystem

太阳系['səʊlə(r)]MarsThefourthplanetfromthesunMarsisthefourthplanetfromthesuninoursolarsystemandisnamedafter

Mars,theRomangodofwar.WhyisitcalledMars?theRomangodofwar被命名罗马战神Itismuchsmallerthantheearth.Itsdiameteris53%aswideasthatoftheearth.[dai'æmitə]Duringspringandsummer,thestrongstorms

cancoverthewholesurfaceofMars.gravityn.引力，重力

Thegravity

onitssurfaceisabout40%asstrongasitisonearth./'grævəti/IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.地球到火星的最近距离约为5500万公里，最远距离则超过4亿公里。55millionkmsScanthetextandfindoutkeywords、phrasesandsentences.(英汉互译)1.benamedafter__________2.atadistanceof_______3.becoveredby__________4.beclosetto_________5.

围着...转_____________6.太阳系___________7.直径_________________8.风暴_____________9.重力、引力___________10搜寻_____________11.

Its

diameter

is

53%

as

wide

as

that

of

the

earth..

12.Mars

goes

around

the

sun

at

a

distance

of

about

228

million

kilometers.

13.YoucantellwhichplanetisMarsbecauseitisbrightredinthenight.14.Soapersonwhoweighs90kilosonearthweighs36kilosonMars.15.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.

被命名为…有…的距离被…覆盖与…最靠近goaroundsolarsystemdiameterstormgravitysearchfor

它的直径是地球直径的53%。

火星在距离太阳2亿2千8百万公里处围绕着太阳转。

你能说出哪个行星是火星是因为它是在夜空中是红亮的。

因此一个在地球上重90公斤的人在火星是重36公斤。当两个行星彼此最近时，从地球上到火星上要花费宇宙飞船大约8个月的时间。Difficultlanguagepoints1.benamedafter/benamedby.

1)becoveredby+（人/组织/机构...）:表动作,由...承担/负担/支付;被...掩护/报道/监视/控制等等,表示抽象的概念,后面接人,机构,或者组织.Allroadshavebeencoveredbythepolice.Task3万达广场以公司“万达”为名。/阿里巴巴是由马云命名的。AlibabaCorporationwasnamedbyMaYun.WandaPlazawasnamedafterWanda.2)becoveredwith+（雪/草地/烟雾...）

:被...覆盖,表状态,表示具体的覆盖.如被雪/草地/布/被子/盖子/罩子等东西盖住.

Theground

iscoveredwithwater.2.becoveredby/with3.倍数的表达法1)Itsdiameteris53%aswideasthatoftheearth.2)ThegravityonthesurfaceofMarsisabout

two-fifthsasstrongasitisonearth.A+be+倍数+as+adj./adv.原级+as+BA+be+倍数+adj./adv.比较级+than+B1）Itsdiameteris53%widerthan

thatoftheearth.2）ThegravityonthesurfaceofMarsisabouttwo-fifthsstrongerthanthatontheearth.拓展改写归纳可以是百分数、分数等Exercise1用适当的词填空。1.Thesurfaceoftheearthiscovered_____(by/with)75%water.2.Theweatherreportsaysthattherewillbeastrongs________thisafternoon.3.It_____(花费）methreehourstofinishthework.4.TheHopePrimaryschoolisnamed____PingAn.5.Itsdiameteris53%______(wide)thanthatoftheearth.withtormtookafterwiderMars,the_______

（第四）planetofthesolarsystem,goesaroundthesunata_________['distəns]ofabout228millionkilometers.Its_______[dai'æmitə(r)]is53%aswideasthatoftheearth.Itlookslikea_____and_______ball.It’sverybeautiful.Butduring______and_______,strong__________(风暴）cancoverthewhole__________ofMars.Thegravityonthesurfaceofitisabout________as________asitisonearth.Theairhasonly_____oxygen.Ittakesaspaceship_________toreachMarswhentheyareclosesttoeachother.fourthdistanceredorangespringsummerstormssurfacetwo-fifthsstrongdiameterIndividualwork.0.13%eightmonthsPost-readingExercise2Workingroupsandtrytoretellthetext.Marsdiametergoaroundshapeclimategravitytemperaturetakeaspaceshipfourth,benamedafter53%aswideasatadistanceof228millionkmsbetweenminus138degreescelsiusand28degreescelsiusair0.13%oxygenballbecoveredbystormstwo-fifthseightmonthsPost-readingExercise