高一英语Unit4Astronomy:thescienceofthestars人教实验版【本讲教育信息】一.教学内容:Unit4Astronomy:thescienceofthestars词汇:intime,allow,dependon,breakout语法:名词性从句:主语从句,宾语从句,表语从句二.重、难点讲解1.intimeItexplodedloudlywithfireandrock,whichwereintimetoproducethewatervapor,…地球猛烈爆炸起火,并喷涌出岩石,这些最终产生了水蒸气……intime:1)soonerorlater,eventually迟早,最后e.g.I’llseehimintime.总有一天我会遇到他的。You’lllearnhowtodoitintime.你迟早能学会做这件事。2)notlate及时,不迟intime(forsth./todosth.)e.g.Shewillbebackintimetopreparedinner.她来得及回来准备晚饭。Thedoctorcamejustintime.医生及时地赶来了。3)inthecorrecttime合节拍e.g.Theaudienceclappedintimetothemusic.观众和着音乐的节拍拍手。其反义词组为:outoftime不合节拍2.allowItallowedtheearthtodissolveharmfulgases,whichhadbecomepartoftheearth’satmosphere,intotheoceansandseas.它使地球把曾经存在于大气层中的有害气体溶解在海洋里。allow:toletsb.dosomething,orletsomethingbedone,permit允许其句型结构有三种:allowsb.todosth./allowdoingsth./allowsth.e.g.Theydonotallowit.他们不允许做这种事。Theydonotallowsmoking.他们不允许抽烟。Theydonotallowyoutosmoke.他们不允许你抽烟。allowfor:totakeintoconsideration考虑到,估计到e.g.Allowingforthetrainbeinglate,weshouldbebackby10.考虑到火车可能会误点,我们在十点回来。3.dependonWhetherlifewillcontinueontheearthformillionsofyearstocomwilldependonwhetherthisproblemcanbesolved.在未来的数百万年中,生命能否在地球上延续取决于这个问题能否得到解决。1)tovaryaccordingto取决于,依……而定,根据……而定e.g.Whetherthegamewillbeplayeddependsontheweather.比赛是否举行将视天气而定。Oursuccessdependsonwhethereveryoneworkshardornot.我们的成功取决于是否每个人都努力工作。2)totrustaperson/something依靠、信任某人或某物e.g.WearedependingonyoutofinishthejobbyFriday.我们相信你在星期五前能完成这项工作。Idependedonthemap,butitwaswrong.我依靠地图,但地图却错了。3)tobesupportedby靠……过活e.g.Hisfamilydependonhim.他的一家人全靠他养活。Thatalldepends./Italldepends.须视情况而定。e.g.Itdependshowyoutackletheproblem.那要看你如何应付这个问题。Imaygotherebutthatalldepends.我也许去,但要看情况。4.breakoutWewatchedamazedasfirebrokeoutontheoutsideofthespaceshipastheearth’sgravityincreased.我们惊奇地看着,随着地球引力的增加,宇宙飞船的外层燃烧起火。breakout:1)(esp.ofsomethingbad)tobeginsuddenly(尤指坏事)爆发,突然发生e.g.Afirebrokeout.发生火灾。Awarbrokeout.战争爆发了。2)toshoworgivevoiceto,suddenly露出,喊叫e.g.Hisfacebrokeoutinspots.他脸上出现了许多斑点。Shebrokeoutincurses.她大声咒骂起来。3)toescapefrom逃出e.g.tobreakoutofprison越狱逃跑breakinto:1)toenterbyforce闯入e.g.tobreakintoahouse闯入住宅2)tobeginsuddenlye.g.tobreakintoarun突然跑起来breakofftocausetoend,interrupt中断,打断e.g.Thosetwocountrieshavebrokenoffrelations.那两个国家已经断绝了关系。breakdown1)todestroy,reduceorbereducedtopieces毁掉,打破e.g.Theybrokethedoordown.他们把门砸开了。Theoldcarswerebrokendownfortheirmetalandparts.那些旧汽车都被拆了,以便利用其中的金属和零件。2)stopworking出故障,不能运转e.g.Thecarbrokedown.汽车开不动了。3)分解,分类e.g.Chemicalsinthebodybreakourfooddownintousefulsubstances.人体中的化学元素把食物分解成有用的物质。名词性从句(一)概念在复合句中相当于名词的从句叫做名词性从句。通常句子中的主语,宾语都是名词或名词性的词,表语有时可以是名词或名词性的词,因此主语从句,宾语从句和表语从句都是名词性从句。另外,英...