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2022高三年级英语语法知识点|【篇一】高三年级英语语法知识点
1.定义用作主语的从句叫做主语从句
2.构成关联词+简单句
3.引导主语从句的关联词有三类1从属连词thato如That theywere intruth sisterswas clearfrom thefacial resemblancebetween them.很明显,她们确是亲姐妹,她们的脸型很相似2从属连词whether如Whether he11e hereisn tclear.他是否会来这里还不清楚3连接代词who,whom,whose,what,which,whoever,whatever,whichever连接副词where,when,how,whyo如What shedid is not yetknown.她干了什么尚不清楚How thishappened isnot clearto anyone.这事怎样发生的,谁也不清楚Whoever esis wele.不论谁来都欢迎Wherever youare ismy home-----my onlyhome.你所在的任何地方就是我的家一一我的家解释
1.主语从句能用it作形式上的主语常以it作形式主语的句型有A.It+be+形容词obvious,true,natural,surprising,good,wonderful,funny,possible,likely,certain,probable,etc.+that从句如:It iscertain thatshe willdo wellin herexam.毫无疑问她考试成绩会很好It isprobable thathe toldher everything,很可能他把一切都告诉她了B.It+be+名词词组no wonder,an honour,a goodthing,a pity,no surprise,etc.+that从句如It sa pitythat wecan tgo.很遗憾我们不能去It sno surprisethat ourteam shouldhave wonthe game.我们没赢这场比赛真意外C.It+be+过去分词said,reported,thought,expected,decided,announced,arranged,etc.+that从句如It issaid thatMr.Green hasarrived inBeijing.据说格林先生已经到了北京It isreported thatChina hassent anothermanmade earthsatellite intoorbit.据报道中国又成功地发射了一颗人造地球卫星D.It+seem,happen等不及物动词及短语+that从句如It seemsthat Aliceisnoting to the partyat all.Alice似乎不来参加晚会It happenedthat Iwas outthat day.碰巧我那天外出了E.It+doesn,t mattermakes no difference,etc.+连接代词或连接副词引起的主语从句如It doesnt matterwhether shewill eor not.她是否来这无关紧要It makesnodifferencewhere weshall havethe meeting.我们在哪里开会毫无区别F.当that引导的主语从句出现在疑问句中时,要以it作形式主语,而把主语从句后置如Is ittrue that the scientistwill giveus alecture nextweek下周那位科学家将给我们作报告是真的吗?Does itmatter muchthat theywill note tomorrow他们明天不来很要紧吗?G.当主语从句出现在感叹句中时,要以it作形式主语,而把主语从句后置如How strangeit isthatthechildren areso quiet!孩子们这么安静真奇怪!
2.注意连接代词whoever,whatever,whichever等引导主语从句的含义Whoever eswill bewele.whoever=the personwho来的人将受到欢迎Whatever hedid wasright.whatever=the thingthat他所做的事情是正确的Whichever ofyou esin willreceive aprize.whichever=anyone ofyou who你们当中不论哪个进来将会得到奖|【篇二】高三年级英语语法知识点under age未成年,未达到规定年龄He wasrejected bythe armybecause he was underage.他因尚未成年而被拒绝参军You shouldnt sellcigarettes toteenagers whoare underage.你不应该把香烟卖给没未成年的青少年under arrest被捕You are under arrestin thename ofthe law.你被依法逮捕了He wassoon put[placed]under arrest.他不久就被逮捕了under attack遭受攻击The panyhas eunder fierceattack forits decisionto closethe factory.因为决定要关闭工厂,公司受到猛烈攻击under consideration在考虑中;在研究中The questionis nowunder consideration.这个问题正在考虑工The planis underconsideration bythe Ministryof Education.教育部正在研究这个方案under construction在建造中The newrailway is under construction.新铁路正在修建当中The bridgeisunderconstruction.这座桥正在建造中There aretwo newhotels nearhere underconstruction.附近正在兴建两家新的旅馆under control在控制中They soongot thefire undercontrol.他们很快把火势控制住It tookthe teachermonths tobring hisclass undercontrol,这个老师花了几个月的时间才管住了他的班级under copyright享有版权The poemis still under copyright,so youhave topay toquote it.该诗仍然享有版权,因此你必须支付引用费under cover在隐蔽处;秘密地;在信封或邮包中Plans forthe attackwere madeunder cover.进攻计划是秘密制定的The checkcame undercover inyesterday smail.支票是装在信封里和昨天的信一道寄来的under discussion在讨论中;在审议中That hasno relationtothematter underdiscussion.那与正在讨论的事无关That sanother topicthat willeunderdiscussion.那是另一个要讨论的问题under examination在检查中;在审查中The prisonerwas still under examination.囚犯仍受审The proposalsare stillunder examination.提案仍在审查中under fire在炮火中;被攻击中We wereunder firefrom allsides.我们遭到了来自面八方的射击The headmasterwas underfire fornot sendingthe boyshome whostole thecar.校长由于没有开除那几个偷汽车的学生,受到责难under guarantee在保修期内It sstillunder guarantee,so themanufacturer willrepair it.保证书还有效,所以厂家会给修理的The caris stillunderguarantee,so youshould beable toget itrepaired freeof charge.汽车还在保修期内,所以你应该可以免费修理under oath在法庭上宣过誓要说实话The judgereminded thewitness thathewasstillunderoath.那法官提醒证人他已宣誓不作伪证under obligation有义务;一定要The onewho didthe damagein underobligation topay forit.造成损失的人有义务赔偿【注】在现代英语中通常用under an[no]obligation的形式You reunder noobligation topay forgoods whichyou didnot order.没有订购的货物就无须付款She sunder anobligation tohim becausehe lenther money.因为他把钱错给她了,所以她有偿还他的义务。