UnitFourTopicTwoSectionC课件仁爱英语九年级上册

Unit4AmazingScience

Topic2I’mexcitedaboutthethingsthatwillbediscoveredinthefuture.

SectionC

Teachingaims1.Knowledgeaims：Wordsandphrases:Wordsandphrases:storm,weigh,journey,excitement,generally,limit,benamedaftersb.,as…as…,atadistanceof…,Ittakes…todosth.Sentences:Itsdiameteris53%aswideasthatoftheearth.

YoucantellwhichplanetisMarsbecauseitisbright,redinthenightsky.

ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.

IttakesaspaceshipabouteightmonthstoreachMarsfromtheearth

IthasbeentwodayssincewelandedonMars.2.Skillaims:

Letstudentsusethefuture

passivevoiceinlistening,speakingandwriting.3.Keypoints:

Grammar:theFuturePassiveVoice4.Difficultpoints：

Itsdiameteris53%aswideasthatoftheearth.

IthasbeentwodayssincewelandedonMars.1.到火星的太空飞行2.参加，加入3.去太空旅行，遨游太空4.新的事物6.长大7.掌握一些基本的电脑技术8.在舞台上9.比起……更喜欢……10.对……感到激动12........的形状14.知道，了解Revisioninclass1.语法：

被动语态1)一般将来时的被动语态，其结构为：willbe+动词的过去分词.也可以用作“begoingtobe+及物动词的过去分词”，表示“计划、打算、安排的事将被执行”。e.g.Theoperationisgoingtobehadintheafternoon.Hewillbemetatairportbyhisfriend.WillanEnglishcontestbeheldnextSaturdayafternoon?Youwillnotbeallowedtogooutifyoudon’tfinishyourhomework.2)一般现在时态被动语态is/am/are+doneeg.ManyspaceshipsaresentintospacebyChina.3)一般过去时态被动语态was/were+doneeg.SpaceshipVwassentintospacein2003.4).有情态动词的被动语态，结构为“情态动词+be+及物动词的过去分词”。e.g.Treescanbeplantedinspring.Revisioninclass1a.Readandunderstand.

LookatthepicturesandpredictwhichstatementsaretrueaboutMars.Thenreadthepassagequicklyandchecktheanswers._____1.Marslookslikearedball._____2.ThetemperatureonMarsisveryhigh._____3.Marsismuchlargerthantheearth._____4.Marsistoofarawayforustoreach.TFFF1bRead1aagainandwritedowntheinformationaboutMars.DiameterColorShapeClimateGravityDistancefromthesun53%aswideasthatoftheearth

redandorangeaball

duringspringandsummer:strongstormstemperature:between-138℃and28℃abouttwo-fifthsasstrongasitisonearthabout228millionkilometersNo.Becauseduringspringandsummer,thesurfaceofMarsiscoveredbystrongstorms.AndThetemperatureonMarsisbetween-138℃and28℃.Theairhasonly0.13%oxygen.

1c.Discussthecrazyquestionswithyourpartnerandstateyourreasons.

Yes.ThetemperatureonMarsisbetween-138℃and28℃.Theairhasonly0.13%oxygen.

No.Becausetheairhasonly0.13%oxygen.

Yes.BecauseThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.

LanguagePoints1.name（动词），意为“命名，给......取名”，后接双宾语，构成：namesb./sth.+名称。e.g.TheynamedtheirsonBruce.name...after...意为“给......取名”。e.g.WenamedChina’sfirstlunarprobeafterChang’e.benamedafter...

“（被）以......命名”，是被动语态的形式。e.g.China’sfirstlunarprobewasnamedafterChang’e.2.as...as...意为“和......一样”，中间接形容词或副词的原级。否定式为notas...as...，意为“不如......那样......”3.goaround意为“环绕，绕着”4.distance（可数名词），意为“距离”distant（形容词），意为“遥远的”

LanguagePoints

atadistanceof意为“相隔”；atadistance意为“在远处”5.cover...with...意为“把......用......盖住”e.g.Anncoveredherfacewithherhands.becoveredwith=becoveredby“被......覆盖着”e.g.Thegroundiscoveredwith/bythickleaves.②cover（可数名词），“封皮，封面”6.weigh（及物动词），意为“重，有多重”e.g.Thelargestoneweighsover10tons.

weight（不可数名词），意为“重量；分量”e.g.What’syourweight？=Howmuchdoyouweight？7.ttakes+主语+sometimetodosth.做某事花了（主语）多长时间。

LanguagePoints8.worth（形容词），意为“值得，有......价值的”，常用短语有：①beworthdoingsth.意为“值得做某事”e.g.Theplaceisworthvisiting.②beworth+钱意为“值多少钱”e.g.Thepictureisworth30￥.③beworth+名词意为“值得......”e.g.Idon’tthinkit’sworthourwork.9.倍数的表达法A+be+倍数+as+adj./adv.原级+as+BA+be+倍数+adj./adv.比较级+than+Be.g.Itsdiameteris53%aswideasthatoftheearth.=Itsdiameteris53%widerthanthatoftheearth.

LanguagePoints10.worth（形容词），意为“值得，有......价值的”，常用短语有：①beworthdoingsth.意为“值得做某事”e.g.Theplaceisworthvisiting.②beworth+钱意为“值多少钱”e.g.Thepictureisworth30￥.③beworth+名词意为“值得......”e.g.Idon’tthinkit’sworthourwork.11.searchfor:表示没有“被搜索的对象”只有“寻找的目标”。e.g.Allnighttheysearchedforthelostboy.search…for…表示搜查某一对象的目的是要找到什么,强调有具体的目标。e.g.ShesearchedmanyshopsforJim’sgift.

LanguagePointssearch意为“在……搜查”或“搜身”,是个及物动词，后面直接跟“被搜查的对象”。如：Mr.Smithsearchedeveryroominthehouse.12.Itis(hasbeen)+一段时间+since。e.g.Itisalongtimesincetheyleft.=Ithasbeenalongtimesincetheyleft.

HiKangkang,Ithasbeentwodays_________(since,from)welandedonMars.It_________(cost,took)usmorethantwoyearsto_________(reach,get)here.Generally,thejourneywentwell,butthelivingconditionswere_______(quiet,quite)badduringthejourney.Wehadtoproducemostofthefoodinthespaceship.______________(What’smore,What’sworse),ourwatersupplieswereverylow.Wehadtolimittheuseofwaterduring_________(those,these)days.Sowehadashowereverysixweeks.Wewillspendanothersevenhundredandsixty-threedaysonMars.__________(How,What)alongtime!Ioftenmissthefamily,buttheexcitementofbeingonMarsisworthit!Wishmeluck!Yours,UncleStephensincetookgetquiteWhat’sworsethoseWhatRead2andanswerthequestions.(1)Whoisthise-mailfromandto?ItisfromUncleStephentoKangkang.

(2)Howlongdidittakethemtogetthere?Morethantwoyears.(3)Dideverythinggowellduringthejourney?No,itdidn’t.

3a.Writebackane-mailtoUncleStephenforKangkangandaskhimformoreinformationaboutMars.Thelistmayhelpyou.clothing

foodanddrinksweather

transportation…3bWorkinpairs.Checkyourpartner’se-mailanduseyourknowledgeofMarstoanswerthequestionsforUncleStephen.DearUncle,I’mverygladtoreceiveyoure-mail,andIknowthatthelivingconditionswerequitebadduringyourjourney.IaminterestedintheinformationaboutMars.Canyoutellmemoreaboutit?HowabouttheweatheronMars?Isitverycold?Whatkindoftransportationdoyouusethere?Iamlookingforwardtoyoure-mail!Goodluck!

Yours,

KangkangRevisioninclass1.太……以致于不能……3.以……命名4.和……一样……5.围绕……转6.相隔……远的地方7.被覆盖……9.离……近12.值得(做)某事13.自从...有多久1.too...to...2.looklike3.benamedafter4.as+adj./adv.+as...6.atadistanceof...7.becoveredby/with...8.Ittakessb.sometimetodosth.9.becloseto...10.searchfor11.what'sworse=evenworse12.beworth(doing)sth.13.Itis(hasbeen)+一段时间+sinceRevisioninclass1.Themoongoesaroundtheearth______adistanceofabout380,000kilometers.A.is

B.for

C.with

D.at2.It______alongtimesincewereachedBeijing.A.are

B.was

C.hasbeen

D.hadbeen3.—Don’tthrowaboutyournewspaper!—Sorry,I’mbusynow.Theywill_____later. A.collect B.becollect

C.becollected

D.collected4.It______methreehourstofinishthework.A.spends B.takes

C.costs

D.pays5.Manytreesandflowers_____inourschoollastyearandtheymadeourschoolabeautifulgarden.A.haveplanted

B.areplanted

C.wereplanted D.willbeplanted6.----IsMarsbiggerthanearth?----No.It’sabout______theearth.A.asbigas