Unit+4+Topic+2+Section+C 仁爱版九年级英语上册

Unit4AmazingScienceTopic2SectionC学习导航重点研讨课堂小结当堂检测学习目标新知学习新知学习重点研讨课堂小结当堂检测学习目标

LanguageGoal能熟悉并正确运用本课时的重点单词和短语能掌握含有分数，百分数等的同级比较能了解火星的相关知识新知学习重点研讨课堂小结当堂检测学习目标Mars

isnamedafterMars,theRomangodofwar.the

Roman

god

ofwarMarsbenamedafter以……而命名罗马战神新知学习重点研讨课堂小结当堂检测学习目标水星（Mercury）金星（Venus）地球（Earth）火星（Mars）木星（Jupiter）土星（Saturn）天王星（Uranus）海王星（Neptune）solarsystem[`səulə`sistəm]WhichoneisMars?新知学习重点研讨课堂小结当堂检测学习目标Marsisthefourthplanetfromthesuninoursolarsystem.Mars新知学习重点研讨课堂小结当堂检测学习目标Itismuchsmallerthantheearth.Itsdiameteris53%oftheearth’s.直径[daɪ′æmɪtə(r)]新知学习重点研讨课堂小结当堂检测学习目标Thegravityonitssurfaceisabout40%asstrongasitisonearth.Soapersonweighs90kilosonearthweighsonly36kilosonMars.[′grævəti]引力，重力[wei]v.称重新知学习重点研讨课堂小结当堂检测学习目标1.Marslookslikearedball.()2.ThetemperatureonMarsisveryhigh.()3.Marsismuchlargerthantheearth.()4.Marsistoofarawayforustoreach.()TFFFPredictwhichstatementsaretrueaboutMars.

WhatdoyouknowaboutMars?Whatdoesitlooklike?MarsisthefourthplanetfromthesuninoursolarsystemandisnamedafterMars,theRomangodofwar.Itsdiameteris53%aswideasthatoftheearth.Marsgoesaroundthesunatadistanceofabout228millionkilometers.YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.Itlookslikearedandorangeball.It'sverybeautiful.Butduringspringandsummer,thesurfaceofMarsiscoveredbystrongstorms.新知学习重点研讨课堂小结当堂检测学习目标1aReadandunderstand.ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.Soapersonwhoweighs90kilosonearthweighsonly36kilosonMars.ThetemperatureonMarsisbetween-138℃and28℃.Theairhasonly0.13%

oxygen.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.ScientistsarestillsearchingformoreinformationaboutMars.新知学习重点研讨课堂小结当堂检测学习目标新知学习重点研讨课堂小结当堂检测学习目标DiameterColorShapeClimateGravityDistancefromthesun53%aswideasthatoftheearth

redandorangeaball

duringspringandsummer:strongstormstemperature:between-138℃and28℃abouttwo-fifthsasstrongasitisonearthabout228millionkilometers1bRead1aagainandwritedowntheinformationaboutMars.新知学习重点研讨课堂小结当堂检测学习目标1.DoesMarshaveagoodclimateforplants?2.IsMarsausefulplacetodryfruit?3.IsMarsagoodplaceforhumanbeingstolive?4.IsMarsacomfortableplaceforheavypeople?1cDiscussthecrazyquestionswithyourpartnerandstateyourreasons.新知学习重点研讨课堂小结当堂检测学习目标Mars,fourth,benamedafter,diameter,aswideas,atadistanceof,tell,because,brightred,ball,storms,gravity,temperature,oxygen,eightmonths,closestto,searchingforRetell1aaccordingtothekeywords.新知学习重点研讨课堂小结当堂检测学习目标2Kangkang’sunclesentane-mailtohimfromMars.Choosetherightwordstocompletetheletter.HiKangkang,Ithasbeentwodays_______(since,from)welandedonMars.It______(cost,took)usmorethantwoyearsto______(reach,get)here.Generally,thejourneywentwell,butthelivingconditionswere_____(quiet,quite)badduringthejourney.Wehadtoproducemostofthefoodinthespaceship.sincetookgetquite新知学习重点研讨课堂小结当堂检测学习目标____________(What’smore,What’sworse),ourwatersupplieswereverylow.Wehadtolimittheuseofwaterduring______(those,these)days.Sowehadashowereverysixweeks.Wewillspendanothersevenhundredandsixty-threedaysonMars.______(How,What)alongtime!Ioftenmissthefamily,buttheexcitementofbeingonMarsisworthit!Wishmeluck!Yours,UncleStephenWhat’sworsethoseWhat()1.It’sbeenfivedayssincetheylandedonMars.()2.IttookthemthreeyearstogettoMars.()3.Theyhadplentyoffoodandwaterinthespaceship.()4.Theyhavebeenawayfromtheearthfor763days.()5.TheexcitementandrisksonMarsareworthit.FFFTTReadagainandmarkTrue(T)orFalse(F).新知学习重点研讨课堂小结当堂检测学习目标新知学习重点研讨课堂小结当堂检测学习目标3aWritebackane-mailtoUncleStephenforKangkangandaskhimformoreinformationaboutMars.Thelistmayhelpyou.clothing;foodanddrinks;weather;transportation…新知学习重点研讨课堂小结当堂检测学习目标DearUncle,I'mverygladtoreceiveyoure-mail,andIknowthatthelivingconditionswerequitebadduringyourjourney.IaminterestedintheinformationaboutMars.Canyoutellmemoreaboutit?HowabouttheweatheronMars?Isitverycold?Whatkindoftransportationdoyouusethere?I'mlookingforwardtoyoure-mail!Goodluck!

Yours,KangkangLanguagepoints1.Marsisthefourthplanetfromthesuninoursolarsystem

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

name...after以……的名字给……取名benamedafter是被动语态e.g.ThebabywasnamedafterBruceLee.这个婴儿的名字是以李小龙的名字取的。新知学习重点研讨课堂小结当堂检测学习目标2.Itsdiameteris53%aswideasthatoftheearth.它的直径是地球直径的53%。

倍数的表示法：倍数+as+形容词或副词原级+as

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。新知学习重点研讨课堂小结当堂检测学习目标3.Marsgoesaroundthesunatadistanceofabout228millionkilometers.火星在距太阳约228000000千米处环绕着太阳转。

atadistanceof…有……距离

atadistanceof相隔atadistance在远处，有相当的距离e.g.Themoongoesaroundtheearthatadistanceof380000km.月球在距地球38万千米的地方绕地球旋转。Thepolicefollowedhimatadistance.警察远远地跟着他。

inthedistance在远处e.g.ThatisLongIslandinthedistanceoverthere.那边远处是长岛。新知学习重点研讨课堂小结当堂检测学习目标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。5.ThesurfaceofMarsiscoveredbystrongstorms.火星表面被强烈的风暴覆盖着。

becovered被覆盖becoveredwith遮盖，遮蔽e.g.Thegroundiscoveredwithshow.土地被雪覆盖。新知学习重点研讨课堂小结当堂检测学习目标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