unit4 Astronomylanguage points 1

.,Unit4Astronomy:thescienceofthestars,.,LanguagePoints,1.system:n.系统,体系,制度,体制a.politicalsystem政治体制putersystem电脑系统,.,2theory:n.学说，理论.intheory理论上inpractice实际上Yourplanisgoodintheory,butitdoesntworkinpractice.,.,3.violent:a.暴力的,激烈的violence:n.a.violentpainb.aviolentyoungman.c.familyviolence家庭暴力,.,4.intime:及时=notlate“迟早;最后”Eg.Dontworry.Everythingwillgetbetterintime.别着急,我肯定事情最终会好转的。,.,intime及时；总有一天；终于innotime立刻，马上ontime按时atonetime曾经，一度atatime一次，同时attimes有时atnotime决不，在任何时候都不,.,5.atmospheren.大气层;气氛a.指“大气层”时,常用theatmosphere;b.指“气氛”时,常使用单数形式。Eheatmosphere在大气层里afriendlyatmosphere.友好的氛围。,.,6.unlikea.prep.不同；不像b.Adj.(作表语）不相似，不同的,Unlikeherbrother,SuShiisveryopitimistic.Theyaretwins,buttheyareunlikeincharacter.,拓展:unlikelyadj不可能Itisunlikelythatshefailedtheexam.,.,易错点拨unlike/dislike/alike/likely(1)unlikeprep.不同；不像(2)dislikevt.不喜欢(3)alikeadj.相似的，同样的(4)likelyadj.很可能发生的，有希望的（unlikelyadj.不可能）,.,应用用unlike,dislike,alike,likely的适当形式填空：(1)Thetwinslookverymuch_.(2)_hisbrother,he_playingfootball.(3)Weallthinkheis_towin.,alike/unlike,Unlike,dislikes,likely,.,Harmfulbeharmfulto对有害dosb.harm=doharmtosb.对某人有害domoreharmthangood弊大于利Thereisnoharmindoingsth.做某事无害处。,.,8Chainagoldchain金链子achainof一系列，一连串chainstore,.,9.a.multiply乘AmultipliedbyBisFourmultipliedbysevenistwenty-eight.7乘4等于28b.multiplyv.增加Wemustmultiplyoureffortstodosth我们必须加倍努力做,.,Thenaughtyboy_tomethatthehen（母鸡）that_therejustnowhad_twoeggsthedaybefore.A.laid;laid;laidB.laid;lay;lainC.lied;laid;lainD.lied;lay;laid,10.bylayingeggs.lay-laid-laid-laying放,把放在；产卵eg:Helaidhisbooksonthedesk.,D,注意:lie(lied;lied;lying)说谎lie(lay;lain;lying)躺；位于,.,11existvi.存在；生存；维持生活n.existencen.存在，生存,Thereexists/existed.某地有existon靠为生comeintoexistence开始存在；成立,.,12inonesturn轮到某人；接着inturn依次；轮流；转而；反过来byturns轮流；交替takeonesturn轮到某人做了taketurns依次；轮班，轮流,.,即学即练(1)Thegirlscalledouttheirnames_.那些女孩儿逐一报出了自己的名字。,in,turn,(2)Wekeptwatch_.We_tokeepwatch.我们轮流守望。,by,turns,took,turns,.,preventsb.(from)doingsth.,stopsb.(from)doingsth.,keepsb.fromdoingsth.,13.prevent.from使.不做某事,阻止.做某事,.,(1)Whatcanwedoto_thisdisease_？我们能做什么来防止这种疾病蔓延呢？(2)Dont_others_forlong.不要让别人等太久。,prevent/stop/keep,from,spreading,keep,waiting,.,Noonecanpreventtheplans_out.A.tobecarriedB.fromcarryingC.nottocarryD.frombeingcarried,.,14.cheerup感到高兴；感到振奋sthcheersb.up使某人高兴；使某人振奋cheeronsth为加油Cheers!干杯！祝你健康！(用于祝酒),.,1)_！Thenewsisnttoobad.振作一点吧！也不是什么太坏的消息。(2)EverytimeanEnglishrunnerwonarace,thecrowd_.每次英国选手赢得赛跑冠军，观众就欢呼。(3)Thecrowd_theirfavouritehorse_.观众都替他们看好的马加油。,Cheer,up,cheered,cheered,on,.,15,watchout(for)lookout(for)密切注意；留神watchover照看；看守Watchoutforcarswhenyoucrosstheroad.WouldyoumindwatchovermybagwhenIgototherestroom?,.,.单词拼写1Hewasinterestedina_andalwaysstayedupatnighttowatchthestars.2Notlongagoav_earthquakeoccurredoffthecoastofIndonesia.3Computerhackershavebrokendownsecuritys_，raisingquestionsaboutthesafetyofinformation.4Toomuchsugarcanbeh_tochildrensteeth.,astronomy,violent,systems,harmful,.,5Thethreestarhoteloffersafriendlya_andpersonalservice.6Chinahassentupanother_(人造卫星)intospace.7Thereisalotofrubbish_(漂浮)onthesurfaceoftheriver.8_(理论)isbasedonpractice.9The_(气候)isdifferentfromplacetoplace.10.6_(乘)by5is30.,atmosphere,satellite,floating,Theory,climate,multiplied,.,PutthefollowingsentencesintoChinese:Whatitwastobecomewasamysteryuntilthedustbegantoslowlycombineintoaballmovingaroundthesun.随后它会变成什么曾经是一个谜，直到最后这团尘埃开始慢慢地合成一个环绕太阳运转的球状物。,.,2.Theproblemwasthattheearthbecameviolentbecauseitwasnotclearwhetherthesolidshapewastolastornot.问题是地球（开始）变得激烈动荡，不知道这个固体形状是否会继续存在下去。,.,3.Itallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearthsatmosphere,intotheoceansandseas.它使得地球得以把曾经存在于大气层中的有害气体，溶解在海洋里。,.,4.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.在未来的千百万年中，生命能否在地球上延