Unit4AmazingScienceTopic2SectionC學習導航重點研討課堂小結當堂檢測學習目標新知學習新知學習重點研討課堂小結當堂檢測學習目標

LanguageGoal能熟悉并正確運用本課時的重點單詞和短語能掌握含有分數，百分數等的同級比較能了解火星的相關知識新知學習重點研討課堂小結當堂檢測學習目標Mars

isnamedafterMars,theRomangodofwar.the

Roman

god

ofwarMarsbenamedafter以……而命名羅馬戰神新知學習重點研討課堂小結當堂檢測學習目標水星（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[`s?ul?`sist?m]WhichoneisMars?新知學習重點研討課堂小結當堂檢測學習目標Marsisthefourthplanetfromthesuninoursolarsystem.Mars新知學習重點研討課堂小結當堂檢測學習目標Itismuchsmallerthantheearth.Itsdiameteris53%oftheearth’s.直徑[da?′?m?t?(r)]新知學習重點研討課堂小結當堂檢測學習目標Thegravityonitssurfaceisabout40%asstrongasitisonearth.Soapersonweighs90kilosonearthweighsonly36kilosonMars.[′gr?v?ti]引力，重力[wei]v.稱重新知學習重點研討課堂小結當堂檢測學習目標1.Marslookslikearedball.()2.ThetemperatureonMarsisveryhigh.()3.Marsismuchlargerthantheearth.()4.Marsistoofarawayforustoreach.()TFFFPredictwhichstatementsaretrueaboutMars.

WhatdoyouknowaboutMars?Whatdoesitlooklike?MarsisthefourthplanetfromthesuninoursolarsystemandisnamedafterMars,theRomangodofwar.Itsdiameteris53%aswideasthatoftheearth.Marsgoesaroundthesunatadistanceofabout228millionkilometers.YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.Itlookslikearedandorangeball.It'sverybeautiful.Butduringspringandsummer,thesurfaceofMarsiscoveredbystrongstorms.新知學習重點研討課堂小結當堂檢測學習目標1aReadandunderstand.ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.Soapersonwhoweighs90kilosonearthweighsonly36kilosonMars.ThetemperatureonMarsisbetween-138℃and28℃.Theairhasonly0.13%

oxygen.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.ScientistsarestillsearchingformoreinformationaboutMars.新知學習重點研討課堂小結當堂檢測學習目標新知學習重點研討課堂小結當堂檢測學習目標DiameterColorShapeClimateGravityDistancefromthesun53%aswideasthatoftheearth

redandorangeaball

duringspringandsummer:strongstormstemperature:between-138℃and28℃abouttwo-fifthsasstrongasitisonearthabout228millionkilometers1bRead1aagainandwritedowntheinformationaboutMars.新知學習重點研討課堂小結當堂檢測學習目標1.DoesMarshaveagoodclimateforplants?2.IsMarsausefulplacetodryfruit?3.IsMarsagoodplaceforhumanbeingstolive?4.IsMarsacomfortableplaceforheavypeople?1cDiscussthecrazyquestionswithyourpartnerandstateyourreasons.新知學習重點研討課堂小結當堂檢測學習目標Mars,fourth,benamedafter,diameter,aswideas,atadistanceof,tell,because,brightred,ball,storms,gravity,temperature,oxygen,eightmonths,closestto,searchingforRetell1aaccordingtothekeywords.新知學習重點研討課堂小結當堂檢測學習目標2Kangkang’sunclesentane-mailtohimfromMars.Choosetherightwordstocompletetheletter.HiKangkang,Ithasbeentwodays_______(since,from)welandedonMars.It______(cost,took)usmorethantwoyearsto______(reach,get)here.Generally,thejourneywentwell,butthelivingconditionswere_____(quiet,quite)badduringthejourney.Wehadtoproducemostofthefoodinthespaceship.sincetookgetquite新知學習重點研討課堂小結當堂檢測學習目標____________(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).新知學習重點研討課堂小結當堂檢測學習目標新知學習重點研討課堂小結當堂檢測學習目標3aWritebackane-mailtoUncleStephenforKangkangandaskhimformoreinformationaboutMars.Thelistmayhelpyou.clothing;foodanddrinks;weather;transportation…新知學習重點研討課堂小結當堂檢測學習目標DearUncle,I'mverygladtoreceiveyoure-mail,andIknowthatthelivingconditionswerequitebadduringyourjourney.IaminterestedintheinformationaboutMars.Canyoutellmemoreaboutit?HowabouttheweatheronMars?Isitverycold?Whatkindoftransportationdoyouusethere?I'mlookingforwardtoyoure-mail!Goodluck!

Yours,KangkangLanguagepoints1.Marsisthefourthplanetfromthesuninoursolarsystem

andisnamedafterMars.火星是太陽系中離太陽第四遠的行星，以火星命名。

name...after以……的名字給……取名benamedafter是被動語態e.g.ThebabywasnamedafterBruceLee.這個嬰兒的名字是以李小龍的名字取的。新知學習重點研討課堂小結當堂檢測學習目標2.Itsdiameteris53%aswideasthatoftheearth.它的直徑是地球直徑的53%。

倍數的表示法：倍數+as+形容詞或副詞原級+as

e.g.Thisboxisfivetimesasheavyasthatone.這個盒子是那個盒子的四倍重。Myhouseisthreetimesasbigashis.我家是他家的三倍大。新知學習重點研討課堂小結當堂檢測學習目標3.Marsgoesaroundthesunatadistanceofabout228millionkilometers.火星在距太陽約228000000千米處環繞著太陽轉。

atadistanceof…有……距離

atadistanceof相隔atadistance在遠處，有相當的距離e.g.Themoongoesaroundtheearthatadistanceof380000km.月球在距地球38萬千米的地方繞地球旋轉。Thepolicefollowedhimatadistance.警察遠遠地跟著他。

inthedistance在遠處e.g.ThatisLongIslandinthedistanceoverthere.那邊遠處是長島。新知學習重點研討課堂小結當堂檢測學習目標4.YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.你可以分辨出哪顆行星是火星，因為它在夜空中是明亮的紅色。tell在這里為“辨別，區別，認出”，常和can,could,beableto連用。e.g.ItwassodarkthatIcouldn’ttellitwasyou.天太暗了，我沒有認出是你。5.ThesurfaceofMarsiscoveredbystrongstorms.火星表面被強烈的風暴覆蓋著。

becovered被覆蓋becoveredwith遮蓋，遮蔽e.g.Thegroundiscoveredwithshow.土地被雪覆蓋。新知學習重點研討課堂小結當堂檢測學習目標6.ScientistsarestillsearchingformoreinformationaboutMars.科學家們正在對火星進行更多的探索。

searchfor尋找，搜索e.g.Allnighttheysearchedforthelostboy.整個晚上他們都在搜尋那個丟失的男孩。search…for…尋找，搜索（強調有具體的