Unit4Topic2SectionC课件仁爱英语九年级上册

Unit4AmazingScienceTopic2SectionC

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.Newwordsandexpressionssolarsystem 太阳系Roman adj.古罗马的，古罗马帝国的god n.上帝；神diameter n.直径storm n.风暴，暴（风）雨gravity n.重力；引力weigh v.重，有……重generally adv.一般地，通常journey n.（尤指长途）旅行limit v.限制，限定n.限度；限制excitement n.激动；令人激动的事WhatdoyouknowaboutMars?solarsystem[`səulə`sistəm]太阳系

WhichoneisMars?MercuryVenusEarthMarsJupiterSaturn

UranusNeptuneMarsisthe_____planetfromthesuninoursolarsystem.fourthMarsisisnamedafterMars,theRomangodofwar.the

Roman

god

ofwarbenamedafter以……而命名ThesolarsystemMarsgoesaroundthesun

atadistanceofabout228millionkilometers.↑228,000,000km……相隔……FastReading1.Marslookslikearedball.()2.ThetemperatureonMarsisveryhigh.()3.Marsismuchlargerthantheearth.()4.Marsistoofarawayforustoreach.()TFFF1aLookatthepicturesandpredictwhichstatementsaretrueaboutMars.Thenreadandcheck.

MarsWhat’sthetypeofthepassage?A.Exposition(说明文)B.Narration（记叙文）C.Argumentation（议论文）What’sthetitleofthepassage?

Scanning-Readandmatchthemainideaofeachparagraph.Para.1Para.2Para.3DescribewhatMarslookslikeAskwhatMarslookslikeSearchformoreinformationaboutMarsinthefuture.搜索

WhatdoyouknowaboutMars?Whatdoesitlooklike?MarsisthefourthplanetfromthesuninoursolarsystemandisnamedafterMars,theRomangodofwar.Itsdiameteris53%aswideasthatoftheearth.Marsgoesaroundthesunatadistanceofabout228millionkilometers.YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.Itlookslikearedandorangeball.It'sverybeautiful.Butduringspringandsummer,thesurfaceofMarsiscoveredbystrongstorms.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......”ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.Soapersonwhoweighs90kilosonearthweighsonly36kilosonMars.ThetemperatureonMarsisbetween-138℃and28℃.Theairhasonly0.13%

oxygen.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.ScientistsarestillsearchingformoreinformationaboutMars.DiameterColorShapeClimateGravityDistancefromthesun53%aswideasthatoftheearth

redandorangeaball

duringspringandsummer:strongstormstemperature:between-138℃and28℃abouttwo-fifthsasstrongasitisonearthabout228millionkilometers1bRead1aagainandwritedowntheinformationaboutMars.1.Read1acarefullyandwritedownthekeyphrasesaboutMars.2.WatchashortvideoandgetmoreinformationaboutMars.Languagepoints1.Marsisthefourthplanetfromthesuninoursolarsystem

andisnamedafterMars.火星是太阳系中离太阳第四远的行星，以火星命名。

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以……的名字给……取名benamedafter是被动语态e.g.WenamedChina’sfirstlunarprobeafterChang’e.e.g.ThebabywasnamedafterBruceLee.这个婴儿的名字是以李小龙的名字取的。2.Itsdiameteris53%aswideasthatoftheearth.它的直径是地球直径的53%。

倍数的表示法：

A+be+倍数+as+adj./adv.原级+as+B

A+be+倍数+adj./adv.比较级+than+B

e.g.Thisboxisfivetimesasheavyasthatone.这个盒子是那个盒子的四倍重。Myhouseisthreetimesasbigashis.我家是他家的三倍大。e.g.Itsdiameteris53%aswideasthatoftheearth.=Itsdiameteris53%widerthanthatoftheearth.

3.Marsgoesaroundthesunatadistanceofabout228millionkilometers.火星在距太阳约228000000千米处环绕着太阳转。

goaround转动atadistanceof相隔…distance（可数名词），意为“距离”distant（形容词），意为“遥远的”

atadistanceof意为“相隔”；atadistance意为“在远处”

inthedistance在远处e.g.ThatisLongIslandinthedistanceoverthere.那边远处是长岛。e.g.Themoongoesaroundtheearthatadistanceof380000km.月球在距地球38万千米的地方绕地球旋转。4.YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.你可以分辨出哪颗行星是火星，因为它在夜空中是明亮的红色。tell在这里为“辨别，区别，认出”，常和can,could,beableto连用。e.g.ItwassodarkthatIcouldn’ttellitwasyou.天太暗了，我没有认出是你。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”Butduringspringandsummer,thesurfaceofMarsiscoveredbystrongstorms.火星表面被强烈的风暴覆盖着。LanguagePoints6.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？

Soapersonwhoweighs90kilosonearthweighsonly36kilosonMars.While–reading:SaytheminChinese.4.Ittakesaspaceshipabout8monthstoreachMarsfromtheearth.乘宇宙飞船从地球到火星要花8个月Ittakessb.+时间+todo…花费某人时间做某事6.ScientistsarestillsearchingformoreinformationaboutMars.科学家们正在对火星进行更多的探索。

searchfor寻找，搜索e.g.Allnighttheysearchedforthelostboy.整个晚上他们都在搜寻那个丢失的男孩。search…for…寻找，搜索（强调有具体的目标）

e.g.ShesearchedmanyshopsforJim’sgift.

为了送给Jim礼物，她搜索了很多店。search

在……搜查；搜身。是个及物动词，后面直接跟

“被搜查的对象”。

e.g.Mr.Smithsearchedeveryroominthehouse.史密斯先生搜索了房子里的每个房间。LanguagePoints12.Itis(hasbeen)+一段时间+since。e.g.Itisalongtimesincetheyleft.=Ithasbeenalongtimesincetheyleft.

8.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.2.Kangkang’sunclesentane-mailtohimfromMars.Choosetherightwordstocompletetheletter.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……2.看起来像3.以……命名4.和……一样……5.围绕……转6.相隔……远的地方7.被覆盖……8.做某事花费某人一段时间9.离……近10.寻找11.更糟的是12.值得(做)某事13.自从...有多久1.too...to...2.looklike3.benamedafter4.as+adj./adv.+as...5.go/move/travelaround...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.