Unit+4+Topic+2+Section+C 仁愛版九年級(jí)英語上冊(cè)

Unit4AmazingScience

Topic2SectionC學(xué)習(xí)目標(biāo)預(yù)習(xí)檢測(cè)知識(shí)梳理課堂總結(jié)學(xué)習(xí)導(dǎo)航重點(diǎn)探究當(dāng)堂檢測(cè)新課導(dǎo)入IsMarsagoodplaceforhumanbeingstolive?1.It______3days______theyarrivedhere.A.hasbeen;before

B.was;sinceC.hasbeen;since

D.is;ago2.Hewas______“WuShiliu”,inmemoryofhisgrandfatherwhowas56yearsoldwhenhewasborn.A.namewith

B.namedforC.nameof

D.namedafter3.Ourhallis______theirs,anditwasn’tusedcompletely.A.aslargeas3times

B.as3timesasC.3timesaslargeas

D.as3largetimesasCDC預(yù)習(xí)檢測(cè)4.Thegirlstanding______10centimetersfromtheriverbankisaskingforhelp.A.atdistanceof

B.atadistanceforC.atthedistancefor

D.atadistanceof5.Itwill______them3days______theirdestination.A.spend;reaching

B.spend;onC.take;toreach

D.take;getDC能熟悉并正確運(yùn)用本課時(shí)的重點(diǎn)單詞和短語12能掌握含有分?jǐn)?shù)，百分?jǐn)?shù)等的同級(jí)比較3能了解火星的相關(guān)知識(shí)知識(shí)梳理Keyphrases了解；知道……情況

knowabout以……命名

name…after轉(zhuǎn)動(dòng)，走訪goaround相隔atadistanceof………的表面thesurfaceof被……覆蓋becoveredby/with…在……和……之間between…and…搜索，搜尋searchfor花某人一段時(shí)間做某事Ittakessb.sometimetodosth.landonMars登上火星gowell（進(jìn)展）順利duringthejourney在旅程中what’smore

另外，而且what’sworse

更糟的是limittheuseof

限制……的使用beworth

值得……everysixweeks每六個(gè)星期Keypoints1.Marsisthefourthplanetfromthesuninoursolarsystem

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

name...after以……的名字給……取名benamedafter是被動(dòng)語態(tài)e.g.ThebabywasnamedafterBruceLee.這個(gè)嬰兒的名字是以李小龍的名字取的。2.Itsdiameteris53%aswideasthatoftheearth.它的直徑是地球直徑的53%。

倍數(shù)的表示法：倍數(shù)+as+形容詞或副詞原級(jí)+as

e.g.Thisboxisfivetimesasheavyasthatone.這個(gè)盒子是那個(gè)盒子的四倍重。Myhouseisthreetimesasbigashis.我家是他家的三倍大。3.Marsgoesaroundthesunatadistanceofabout228millionkilometers.火星在距太陽約228000000千米處環(huán)繞著太陽轉(zhuǎn)。

atadistanceof…有……距離

atadistanceof相隔atadistance在遠(yuǎn)處，有相當(dāng)?shù)木嚯xe.g.Themoongoesaroundtheearthatadistanceof380000km.月球在距地球38萬千米的地方繞地球旋轉(zhuǎn)。Thepolicefollowedhimatadistance.警察遠(yuǎn)遠(yuǎn)地跟著他。

inthedistance在遠(yuǎn)處e.g.ThatisLongIslandinthedistanceoverthere.那邊遠(yuǎn)處是長(zhǎng)島。4.YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.你可以分辨出哪顆行星是火星，因?yàn)樗谝箍罩惺敲髁恋募t色。tell在這里為“辨別，區(qū)別，認(rèn)出”，常和can,could,beableto連用。e.g.ItwassodarkthatIcouldn’ttellitwasyou.天太暗了，我沒有認(rèn)出是你。5.ThesurfaceofMarsiscoveredbystrongstorms.火星表面被強(qiáng)烈的風(fēng)暴覆蓋著。

becovered被覆蓋becoveredwith遮蓋，遮蔽e.g.Thegroundiscoveredwithshow.土地被雪覆蓋。6.ScientistsarestillsearchingformoreinformationaboutMars.科學(xué)家們正在對(duì)火星進(jìn)行更多的探索。

searchfor尋找，搜索e.g.Allnighttheysearchedforthelostboy.整個(gè)晚上他們都在搜尋那個(gè)丟失的男孩。search…for…尋找，搜索（強(qiáng)調(diào)有具體的目標(biāo)）

e.g.ShesearchedmanyshopsforJim’sgift.

為了送給Jim禮物，她搜索了很多店。search

在……搜查；搜身。是個(gè)及物動(dòng)詞，后面直接跟

“被搜查的對(duì)象”。

e.g.Mr.Smithsearchedeveryroominthehouse.史密斯先生搜索了房子里的每個(gè)房間。了解火星的相關(guān)信息1.Marslookslikearedball.()2.ThetemperatureonMarsisveryhigh.()3.Marsismuchlargerthantheearth.()4.Marsistoofarawayforustoreach.()TFFFLookatthepicturesandpredictwhichstatementsaretrueaboutMars.Thenreadandcheck.

WhatdoyouknowaboutMars?Whatdoesitlooklike?MarsisthefourthplanetfromthesuninoursolarsystemandisnamedafterMars,theRomangodofwar.Itsdiameteris53%

aswideasthatoftheearth.Marsgoesaroundthesunatadistanceofabout228millionkilometers.YoucantellwhichplanetisMarsbecauseitisbrightredinthenightsky.Itlookslikearedandorangeball.It'sverybeautiful.Butduringspringandsummer,thesurfaceofMarsiscoveredbystrongstorms.1aReadandunderstand.ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.Soapersonwhoweighs90kilosonearthweighsonly36kilosonMars.ThetemperatureonMarsisbetween-138℃and28℃.Theairhasonly0.13%

oxygen.IttakesaspaceshipabouteightmonthstoreachMarsfromtheearthwhenthetwoplanetsareclosesttoeachother.ScientistsarestillsearchingformoreinformationaboutMars.DiameterColorShapeClimateGravityDistancefromthesun53%aswideasthatoftheearth

redandorangeaball

duringspringandsummer:strongstormstemperature:between-138℃and28℃abouttwo-fifthsasstrongasitisonearthabout228millionkilometers1bRead1aagainandwritedowntheinformationaboutMars.GroupWork觀察下列兩個(gè)句子，找出倍數(shù)的表達(dá)方式。Itsdiameteris53%

aswideasthatoftheearth.ThegravityonthesurfaceofMarsisabouttwo-fifthsasstrongasitisonearth.倍數(shù)的表示法：倍數(shù)/分?jǐn)?shù)/百分?jǐn)?shù)+as+形容詞或副詞原級(jí)+as1.DoesMarshaveagoodclimateforplants?2.IsMarsausefulplacetodryfruit?3.IsMarsagoodplaceforhumanbeingstolive?4.IsMarsacomfortableplaceforheavypeople?1cDiscussthecrazyquestionswithyourpartnerandstateyourreasons.PairWorkWhatdoyouknowaboutMars？DoesMarshaveagoodclimateforplants?It'sthe……2Kangkang’sunclesentane-mailtohimfromMars.Choosetherightwordstocompletetheletter.HiKangkang,Ithasbeentwodays_______(since,from)welandedonMars.It______(cost,took)usmorethantwoyearsto______(reach,get)here.Generally,thejourneywentwell,butthelivingconditionswere_____(quiet,quite)badduringthejourney.Wehadtoproducemostofthefoodinthespaceship.sincetookgetquite____________(What’smore,What’sworse),ourwatersupplieswereverylow.Wehadtolimittheuseofwaterduring______(those,these)days.Sowehadashowereverysixweeks.Wewillspendanothersevenhundredandsixty-threedaysonMars.______(How,What)alongtime!Ioftenmissthefamily,buttheexcitementofbeingonMarsisworthit!Wishmeluck!Yours,UncleStephenWhat’sworsethoseWhat3aWritebackane-mailtoUncleStephenforKangkangandaskhimformoreinformationaboutMars.Thelistmayhelpyou.clothing;foodanddrinks;weather;transportation…DearUncle,I'mverygladtoreceiveyoure-mail,andIknowthatthelivingconditionswerequitebadduringyourjourney.IaminterestedintheinformationaboutMars.Canyoutellmemoreaboutit?HowabouttheweatheronMars?Isitverycold?Whatkindoftransportationdoyouusethere?I'mlookingforwardtoyoure-mail!Goodluck!

Yours,