共116页1必修3Unit4Astronomy:thescienceofthestars共116页2要点梳理高效梳理·知识备考共116页3●重点单词1.astronomyn.天文学→astronomern.天文学家2.systemn.系统;体系;制度3.theoryn.学说;理论→theoreticaladj.理论上的4.globen.球体;地球仪;地球→globaladj.全球性的;全世界的共116页45.violentadj.猛烈的;激烈的;强暴的→violencen.暴力→violentlyadv.猛烈地6.atmospheren.大气层;气氛7.unlikeprep.不同;不像→dislikevt.不喜欢8.presencen.出席;到场;存在→presentadj.&n.&v.在场的;目前,现在;出席;颁发,授予9.harmfuladj.有害的;伤害的→harmn.危害,害处→harmlessadj.无害的共116页510.existvi.存在,生存→existencen.存在,生存11.puzzlen.谜;难题vt.&vi.(使)迷惑;(使)为难→puzzledadj.迷惑的→puzzlingadj.令人迷惑的12.gravityn.万有引力;重力13.satelliten.卫星;人造卫星14.climaten.气候15.spaceshipn.宇宙飞船16.pulln.&vt.拉(力);拖;牵引力17.floatvi.&vt.(使)浮动;(使)漂浮n.漂浮物18.massn.质量;团;块;大量;(复)群众共116页6●重点短语1.intime及时;终于2.layeggs下蛋3.givebirthto产生;分娩4.inone’sturn轮到某人;接着5.prevent...from阻止;制止6.blockout挡住(光线)7.cheerup感到高兴;感到振奋共116页78.nowthat既然9.breakout突发;爆发10.watchout密切注视;当心;提防11.cooldown冷却12.aswellas也;还有……13.dependon依靠;依赖,取决于14.getcloseto靠近共116页8●重点句型1.Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.这就形成一个连锁反应,使生命发展成为可能。2.ButwhenItriedtostepforward,IfoundIwascarriedtwiceasfarasontheearthandfellover.而当我试着向前迈步时,我发觉我被送出很远,步子的跨度竟是在地球上的两倍,因而我摔倒了。共116页93....walkingdoesneedabitofpracticenowthatgravityhaschanged.……既然重力改变了,行走的确需要一些练习。共116页10●高考范文(2009·陕西卷)假定你是李华。在一个英文网络论坛上,你看到一个名叫Grown-up的中学生发帖(post)寻求帮助,请根据帖子内容、写作要点和要求回贴。共116页11Grown-upPostat18-5-200920:08Hi,everyone,I'm17yearsoldandIamgoingtouniversitythisautumn.Butmymothercontinuestotreatmeasaseven-year-old.WhatshouldIdo?TOPLastTopicNextTopic+REPLY+NEW共116页12写作要点:1.告诉Grown-up要理解母亲;2.给Grown-up提出解决问题的具体建议。要求:1.短文需写在答题卡的指定区域。2.短文词数不少于80(不含已写好的部分)。3.内容充实,结构完整,语意连贯。4.书写须清晰、工整。共116页13Hi,Grown-up,Asastudentofyourage,Iunderstandyoursituation.________________________________________________________________________________________________________共116页14[范文]Hi,Grown-up,Asastudentofyourage,Iunderstandyoursituation.Theproblemyouarefacingiscommonamongourteenagers.However,itshouldbewisenottodoanythingthatmayhurtherfeelings.Hereareafewsuggestions.共116页15First,it'sadvisabletotalkmorewithyourmom.Ilearnttalkshelpyouunderstandeachotherbetter.Theyarealsoopportunitiestoletherknowyourideasofandattitudestowardmanythings.Second,youshouldlearntodoyourownthingswell,provingtoyourmomthatyouarealreadya“grown-up”,It'sevenbetterifyoucouldsharemoreofthehousework,suchascleaning,washingandcooking.共116页16考点探究互动探究·能力备考共116页17Ⅰ.词汇短语过关1.harmfuladj.有害的;伤害的harmn.&vt.损伤;伤害harmlessadj.无害的harmlessnessn.无害共116页18beharmfulto对……有害dosb.harm/doharmtosb.对某人有害domoreharmthangood弊大于利Thereis(no)harmin(sb.‘s)doingsth.(某人)做某事有(无)害处。Itdoes(no)harm(forsb.)todosth.(对于某人来说)做某事有(无)害处。meannoharm没有恶意共116页19[即学即练1](1)Fruitjuicecan______________________children‘steeth.果汁可能损坏儿童的牙齿。(2)Whathedid_________hisreputation.他所做的损害了他的名声。beharmfultoharmed共116页20(3)Hemaylookfierce,buthe_____________________.他可能看上去很凶,但并无恶意。(4)Thecourtcasewill________________________mybusiness.这起诉讼案件将严重损害我的生意。meansnoharmdoseriousharmto共116页212.existvi.存在;生存;维持生活existentadj.存在的,现存的existencen.存在,生存Thereexists/existed....某地有……,存在……existin存在于……之中existon靠……为生existby靠……生存comeintoexistence开始存在;成立bringintoexistence使发生,产生共116页22[即学即练2](1)________always________aforceofattractionbetweentwobodies.两物体间总是存在着吸引力。(2)They____________verylittlefood.他们靠极少的食物来生存。(3)Thatworddoesn‘t______inEnglish.英语中没有这个词。Thereexistsexistonexist共116页23(4)Fishcan't________________________.鱼离开水就不能生存。(5)Whendidtheworld__________________________?世界是什么时候开始产生的?existoutofwatercomeintoexistence共116页243.puzzlevt.使困惑;使糊涂n.难题;谜puzzlingadj.令人困惑的puzzledadj.感到困惑的puzzleabout/oversth.苦苦思索;仔细琢磨puzzlesth.out琢磨出……的答案;开动脑筋beinapuzzleaboutsth.对某事迷惑不解setapuzzleforsb.(=setsb.apuzzle)出个谜语叫某人猜bepuzzledby被……迷惑共116页25[即学即练3](1)It'squite__________________uswhyhedidthat.他为何做那样的事,我们完全搞不懂。(2)Thissentence_________me.这个句子令我困惑。(3)I______________howtosolvetheproblem.我不知道怎样解决这个问题。(4)Thequestionis________tome.这个问题令我困惑。apuzzletopuzzleswaspuzzledpuzzling共116页264.inone’sturn轮到某人;接着inturn依次;轮流;转而;反过来byturns轮流;交替takeone’sturn轮到某人做……了taketurns依次;轮班,轮流ontheturn正在转变,正在变化outofturn不合时宜地,鲁莽地共116页27[即学即练4](1)Thegirlscalledouttheirnames____________.那些女孩儿逐一报出了自己的名字。(2)Wemakeeveryefforttomakemorefilms,and____________thiscreatesfurtherenvironmentalpollution.我们在竭力生产出更多的电影,反过来这又造成了进一步的环境污染。inturninturn共116页28(3)Wekeptwatch____________.=We____________tokeepwatch.我们轮流守望。byturnstookturns共116页295.prevent...from阻止;制止stopsb.(from)doingsth.阻止某人做某事keepsb.fromdoingsth.阻止某人做某事protectsb.from...保护某人不受……侵袭,挡住,防御keepsb.doingsth.让某人一直做某事共116页30[即学即练5](1)Whatcanwedoto___________________thisdisease_________________?我们能做什么来防止这种疾病蔓延呢?(2)Don't______others________forlong.不要让别人等太久。prevent/stop/keepfromspreadingkeepwaiting共116页31提示:(1)在被动句中from均不能省略。如:Wewerestopped/prevented/keptfromgoingoutbytheheavyrain.大雨使我们无法外出。(2)protect...from...中from后接能带来伤害或损害之事物。如:Theyhuddledtogethertoprotectthemselvesfromthewind.他们挤在一起,免受风吹。共116页326.cheerup感到高兴;感到振奋cheersb.up使某人高兴;使某人振奋cheeron为……加油cheersb.为某人喝彩withgoodcheer欣然地Cheers!干杯!祝你健康!(用于祝酒)共116页33[即学即练6](1)____________!Thenewsisn'ttoobad.振作一点吧!也不是什么太坏的消息。(2)Every