“It”用法及其句型和固定搭配专练

语法：it的用法一.it 作人称代词1.it的最基本用法是作代词，指代前面所提到过的事情、事物、群体、想法，也可以指代未指明但谈话双方都明白的事情或情况。

如：The Parkers bought a new house but it will need a lot of work before they can move in.---I have broken a plate.---It (Breaking the plate) doesn’t matter.2.it也可以指代性别不明或性别被认为不重要的人或动物。

如：---Is it your dog？---No, it isn’t.二.it 作非人称代词1.指时间It is half past two now.2.指距离It is 6 miles to the nearest hospital.3.指温度It is very cold in the room.4.指天气A lovely day, isn’t it?/ It is a bit windy.5.指日期---What’s the date today? --- It’s May 1st, 2014.6.指季节It is winter now.7.指环境It was very quiet in the café.8.指价值---What’s the price of the T-shirt？---It is 150 yuan.三.it作形式主语1.it替代作主语的动词不定式（to do）(1) It be + adj. + (for sb.) to do sth.此处adj.通常为描述事件的形容词：easy, difficult, hard, necessary, possible, right, important, polite, clear, obvious, useful, dangerous, legal, illegal等。

Itis+adj+doingsth与Itis+adj+todosth有什么区别It is+adj+doing sth与It is+adj+to do sth有什么区别It is+adj+to do sth和it+adj+to do sth 的区别：1、 It is important to drink enough water every day.it形式主语，没有意思的。

to drink enough water every day，真正主语。

意思是：每天喝足够的水很重要。

,而谓语is important，使用了形式主语，而把真正主语放在后面，所以句型：It is+adj+to do sth的意思是：做某事怎么样。

2、 Doctors think it is important to drink enough water every day.这时候It is important to drink enough water every day.是宾语从句,作think的宾语.因为think 可以形成think+ 宾语+宾语补足语,所以此句可改成Doctors think it important to drink enough water every day。

也就是少了be动词is，此时，it是形式宾语，important为宾语补足语to drink enough water every day为真正宾语。

拓展资料It is+adj+doing sth1、Germany should understand this because that is precisely what it is doing.德国应理解这点，因为这正是该国正在做的事情。

2、How hard it is doing this.这些事做起来行难。

3、Fortunately, it is doing so.幸运的是，西方正在这么做。

高考重点：It的用法以及含有it的句型英语中it 一词结构看似简单，但其词义广泛，使用范围很广，常令一些初学者感到头痛。

It用法及其句型和固定搭配，是英语语法的重点、难点，又是近几年考试的热点,在高考中也是重现率较高的语言点，其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。

因此在复习中应给予足够的重视。

下面笔者就it的用法简单归纳如下。

一、代替上文中提到过的人或事物。

指代人时，一般用于小孩或身份不十分明朗的人。

1) －Who is the baby? －It‘s my teacher’s son．2) －Who is that gentleman? －It's my friend Tom．He(不可用It) wants to see you．不定代词one 指代前文提到的同类事物之一，而it 特指上文中提到的同一事物。

试对比：This pair of shoes is small. May I have another one？（泛指的另一双）这又鞋子太小了，再拿一双给我看看好吗My pen is missing.Ican’td find it.我的钢笔丢了找不到了(it指my pen)二. it 作为无人称动词的主语，表示天气，时间，距离，环境情况等等。

这时的it 不指某个具体的东西。

没有明确的含义。

译成汉语可不必译出来。

如1).It‘s half an hour’s walk from here to our school．从这儿到我们学校是步行一个小时的路程2) It‘s nice and warm here．这里非常暖和3) But it's two o'clock now, and it's time for us to go to school．两点了该是上学的时间了4) It’s quite close in the room . Let’s open the window for a while。

【英语】初中英语强调句技巧和方法完整版及练习题含解析一、初中英语强调句1．It was back home after the experiment.A. not until midnight did he goB. until midnight that he didn't goC. not until midnight that he wentD. until midnight when he didn't go【答案】C【解析】【分析】句意：直到半夜实验后他才回家。

not until的强调句必须写成it was/is not until +陈述语序。

所以选C。

【点评】考查强调句，本题涉及not until的强调句型。

2．Mike likes playing basketball.A. so does he.B. So he is.C. So she does.D. So he does.【答案】 D【解析】【分析】句意：迈克喜欢打篮球。

他的确如此。

本句是表达“……的确如此”，用半倒装句“so+主语+be/助动词/情态动词”，上句是实义动词，且为一般现在时，主语是he，第三人称单数，因此助动词用does，即So he does，故选D。

【点评】考查副词so位于句首的倒装形式。

注意当主语是人称代词时，要用半倒装形式。

3．It was at 10 p.m. yesterday ________ he came home from work.A. thatB. whenC. whichD. what【答案】 A【解析】【分析】句意：昨天晚上10点他下班回家。

It+be+强调部分+that+句子，故选A。

【点评】考查强调句式，注意平时识记。

4．—Who was calling you on the phone just now?— _______.A. That's himB. It was TomC. This was someoneD. Maybe Jim's【答案】 B【解析】【分析】句意：——刚才谁在电话里叫你？——他是Tom。

“It”用法及其句型和固定搭配讲解“It”用法及其句型和固定搭配,是高中英语语法的重点、难点,又是近几年高考的热点，因此应给予充分的重视,现将it用法归纳如下:一、It用作实词表达以下概念：指代前文提到的事物,前文中的thiｓ，thaｔ;替代前文中的内容；指代一位性别不明的小孩或未知的人;指代未指明但谈话双方都知道的那件事；指代时间、天气、气候、距离等自然现象……二、It用作形式主语替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。

It 作形式主语的常见句型：１. 代作主语的动词不定式,其句型为(１）It bｅadj．(fｏr ｓb.)ｔo dｏｓth．此处adj. 通常为描述事件的形容词：easy，ｄiffｉcult，hard，nｅcessaｒy,ｕnnecｅssa ｒｙ,possible，iｍpossible，liｋely，ｕnliｋｅly,riｇｈｔ，wrong，ｉmportant,uｎｉｍpoｒt ａnt，leｇal,illegal，wｅll-maｎｎerｅd,ill－manｎｅｒｅd,ｐolite,impolite，clｅar,obviｏu ｓ,cｅrｔaｉｎ,ｓuｉｔａble，ｐropeｒ，fiｔ，uｓefuｌ,useｌｅsｓ,ｄanｇeroｕｓ…例Iｔis iｌlegａl(ｆｏrａｔeｅnagｅｒ）to dｒiveａcａr withoｕt a licens ｅ.(2）It be adｊ．oｆsb. toｄo sth.此处aｄj．通常为描述人的形容词:kiｎｄ,uｎkind,ｎice，rｕdｅ，crueｌ，cｏnｓidｅraｔe，thoｕｇhｔｆuｌ，thｏｕgｈｔｌess,carefｕl，ｃareless,silly,foｏlish,ｓｔｕpid,clｅveｒ，ｗise,ｃｒａｚy.例It＇ｓkiｎdｏf yｏｕto help me wiｔｈｔhe proｂlｅm.（3)It替代作主语的动名词的常见句型It'ｓnｏｇｏod／usｅdｏinｇ…Ｉｔ＇ｓ（welｌ）wortｈdoｉng…It＇s（well）worth oｎe＇ｓwhilｅdoing/to do…Iｔ's（weｌl）ｗorth while doiｎg/ to do例Ｉt＇s no usｅcryｉngｏvｅr ｓpilt milk.2. Iｔ替代作主语的从句常见句型（1）It is ＋nouｎ+从句例Iｔis ｎo ｓｅcret thaｔtｈｅpresidentｗants ｔo hａve ａｓecond ｔerm at office．（2）It is adj. +cｌauseＩt'ｓsｕrprisｉnｇtｈat…(ｓhould）………竟然……It＇s a piｔy/ｓhame tｈat…(sｈould）………竟然……例It＇s importaｎt thａｔyｏu ｓｈoｕld apoｌoｇiｚe tｏher foｒyouｒrudeｎess.(=It's ｏf mｕch ｉmｐｏｒtａnｃｅthat yｏｕshｏｕld apｏlogｉze to ｈer for yoｕr rｕdeｎess．)（3）Iｔｖerｂsb. + claｕse= It ｉs v-ｉng + ｃlauｓeIｔ+suｒpｒｉse/ｄeliｇht/inteｒｅst/ｄｉsaｐpoiｎｔ/ｗoｒry/diｓturｂ/ａｎnoy/amaze /ｂother/ｃonｃｅrn/ｆｒｉghten/pｌeａse/anger ｓb. ｔhat…例Iｔwｏrried mｅthaｔshe ｄroｖe ｓｏfast.(＝Iｔｗas wｏrｒｙing that ｓhe dｒovｅso fasｔ.）（4）Iｔverb（ｔo sｂ.)tｈａt…= sb／stｈverb tｏdo（vｅｒｂ＝ａpｐeａr,seeｍ,ｃome about，emerge，ｆｏｌｌｏw,chance,hａppen，oｃｃur,transpire,turn ouｔ,ｗork ouｔ)例Ｉt(so）ｈappeneｄ/chanced thａt tｈey werｅoｕt.(＝Tｈｅｙhapｐened/c ｈanceｄto ｂe ｏut.）（5)It is v-ed that…=sb/ｓtｈｉs to do(verb=say,report，tｈinｋ,belieｖe,hope，exｐｅcｔ,agree，acｃept，deｃidｅ，dｅtｅrmine，intenｄ，ｐｌan,unｄerstａnd,ｋｎow)例It is said that the couple hａvｅgottｅｎｄivorcｅd.(＝Thｅcｏupｌe aｒe said to have goｔten ｄivorced.）（６)Ｉt ｉｓv－eｄthat …（ｓhouｌｄ)…(verｂ＝deｍand，ｒeｑuest,reｑuｉｒe,oｒdｅｒ,sｕｇｇｅsｔ,ａｄvise，rｅｃoｍmｅｎd例It is suggeｓted tｈａt tｈｅy should begｉn with the tｈirdｑuｅｓｔion. “It”用法及其句型和固定搭配讲解2007-0５-０１17:１4：０5.０中国高中生网()三、Ｉt作主语的句型1．It tａkｅs sb.…tｏdo…（=sb ｔａkes…tｏｄo…）某人用多长时间做某事例It took tｈe meｎａweｅk ｔo menｄour roof．（= Tｈe men toｏk a ｗeek t ｏmｅnｄoｕｒroof.）2. It's（ｊuｓt）(uｎ）lｉke sb．to dｏ…（不）像某人做某事的风格例Ｉｔｗas(juｓt)lｉｋe ｈimｔo tｈink of heｌpiｎg ｕs.3. It's(about／hｉgh)time tｈat…shoｕｌd /v-eｄ…是该做某事的时候了例It's（aboｕt/high)tｉmｅthat we shouｌｄtａke ａｃtｉon.４．Iｔ'sｔhe x－th timｅ（ｔhat)…have v－ed…第几次做某事了例Iｔ's the third tiｍe thaｔhe ｈas faｉledｔｈe ｄrｉvｉnｇｔest.5．It is/ｈas ｂｅen…since…cｏｎtinuｏus v-ｅd（延续性动词)某动作已有多长时间不发生了例It＇s 10 yｅars tｈａt he lｉveｄheｒe６.It ｗas(noｔ）…befoｒe…过(不)了多长时间某动作发生了例It was noｔlong beｆore tｈey ａrｒivｅd.四、It 作形式宾语用来替代作宾语的从句、动词不定式、动名词,而把真正作宾语的从句、动词不定式、动名词置于句尾。

高考英语语法大全固定搭配用法总结考试英语语法大全：常规搭配用法总结高考专业术语大全：固定搭配用法总结【重点精华】1.It’sthefirsttimethat.(从句中用现在完成时)Itwasforthefirsttimethat(强调句，对状语forthefirsttime进行强调)It’s(high)timethat..(从句中用过去时或shoulddo)2.It’sthesamewithsb./Soitiswithsb.表示某人也如此(用于前句中每种既有肯定又有否定或两个不同类的谓语动词)3.beabouttodo/bedoingwhen.正要做/正在做就在那时.4.Aistwice/threetimesas+原级+asBA是B的两倍/三倍Aistwice/threetimesthen.ofB.A的是B的两倍/三倍Aistwice/threetimes+比较级+thanBA比B多两倍/三倍5.It’sawasteoftime/m oneydoing/todo做浪费时间/金钱It’snouse/gooddoing做是没有用的It’spossible/probable/(un)likelythat.很可能Itmakesgreat/nosensetodo做某事很有/没意义6.There’snouse/gooddoing.做没有用There’snosense/point(in)doing做没有意义Thereisnoneedforsth./todo.没有过必要做Thereis(no)possibilitythat(同位语从句)很可能/没可能7.The+比较级..,the+比较级越..,越.注意：前半句为从句，用一般现在时代替将来时;8.Itseems/appears(tosb.)thatsb.在某人看来某人=Sb.seems/appearstobe/todo/tobedoing/tohavedone..Itseems/look sasif.好象/似乎..9.It(so)happenedthatsb...某人碰巧..=Sb.happenedtobe/todo/tobedoing/tohavedone..10.Itissaid/thought/believed/hoped/supposed.thatsb=Sb.issaidt obe/todo/tobedoing/tohavedone.(注意：这种句型里如带动词hope 则不能变成简单句，因为无hopesb.todo结构)[要学习网一直在为调动你的学习积极性而努力]12..such.that.如此.以致于(引导结果状语从句).such..as像..的这种(as为关系代词，引导定语从句，在从句里充当主、宾、表)13.DoyoumindifIdosth.?/WouldyoumindifIdidsth.?你介意我做吗?14.Thechanceisthat../(The)Chancesarethat.很可能.15.Check/Makesure/Seetoit/Seethat..(从句中常用一般现在之时)确信/务必..16.dependonitthat..取决于seetoitthat.负责/设法做到.注意：除了except/but/in等介词可以直接接that从句，其它介词后必须用it做形式宾语;17.Itis/was+介词短语/从句/名词/代词等+thatHow/When/Where/Whyis/wasitthat..?注意：此句型为强调句，当被强调的为指出人的词时，还可用who 连接;强调主语时，定冠词从句后的谓语动词应与前面的主语保持一致;注意与定语从句的区别)18.Howisitthat..(这几个句式都表示“怎么会.?”“怎么发生的?”)He+从句?Howdoes/eabout?(Howdiditcomeaboutthat.?)如:Heyouarelateagain?19.Thereseems/appears/happenstobe/mustbe/can’tbe/is(are,was, were)saidtobe/is(are,was,were)thoughttobe.表示“.似乎有/碰巧有/一定有/不可能有/据说有/认为有..”介词(如of)therebeingwant/wish/expecttheretobe要/希望/期待有..adj./adv.enoughfortheretobe.足够.会有.注意：therebeing/theretobe为therebe的非谓语形式;Itissaid/thoughtthatthereis/are=Thereis/was/are/weresaid(t hought)tobe.如：Eg:Ihaveneverdreamoftherebeingsuchagoodchanceforme.Itwon’tbe coldenoughfortheretobeafrosttonight.20.疑问词+插入语+陈述语序?Eg:Whodoyouthinkhe’llhaveattendthemeeting?21.Butfor+n./pron.,sb./sth.would(not)havedone..要不是.,某人早就(表示虚拟语气)=Ifithadnotbeenfor..,./Iftherehadnotbeen..22.Itwon(’t)belongbefore+从句(从句中用一般现如今时)不久/很久就要.Itwas(not)longbefore+从句(从句中用一般过去之时)不久/很久才..23.Thosewho.(从句及主句中会复数谓语动词用复数形式).Anyonewho=Whoever..(从句及主句中谓语介词用单数单数形式)24.主句(一般现在时或最近时)...when从句.(might/shoulddo或might/shouldhavedone)表示”对比”,意思为“本该(可)而却”,主句中为陈述语气,从句里为虚拟语气Eg:Whyareyouherewhenyoushouldbeinschool?你本该上学的怎么在这儿?Hestoppedtryingwhenhemighthavesucceeded.本该已成功了他却停止努力了.25.Thereis./Sb.havenodoubtthat(同位语从句,that不可省略)毫无疑问Thereis/Sb.havesomedoubtwhether..(同位语从句不可用if)不确定是否Sb.doubtif/whether.某人怀疑是否Sb.don’tdoubtthat某人不怀疑26.immediately/directly/instantly/themoment+从句on/upon+n./doingNosoonerhadsb.donethan.(过去时)Hardlyhadsb.donewhen..(过去时)注意：这几个结构都表示“一.就”;27.everytime/eachtime/thelasttime/thefirsttime/nexttime+从句(名词性短语引导一个时间状语句)anywhere/everywhere+从句(相当于wherever引导的地点状语从句)Eg:Youcangoanywhereyoulike.Nexttimeye,pleasebringyoursonalong.28.Ifonly/Iwish+从句(用过去类时态)表示虚拟语气,“要是.就好了”“但愿就好了!”29.Considering+n.或pron.或that从句/Seeingthat.考虑到/鉴于.Given+n./pron作状语,表示“在有的情况下”“如果有”“假定”,有时也表示”考虑到”Eg:Seeing(that)herefusedtohelpus,thereisnoreasonwhyweshouldhe lphiGivengoodhealth,Ihopetofinishtheworkthisyear.Giventheirinexpe rience/thattheyareinexperienced,they’vedoneagoodjob.30.There wasatimewhen.曾经有那么一度.31.otherthan与no,not,none等否定词连用,表示肯定意思,如:Eg:ItwasnoneotherthanMr.Smith.这正是Smith先生.32.Notuntil.did/do/does/willsb.doItwas/isnotuntilthatsb33.It’s(un)likesb.todo/tohavedone做某事很像某人/做某事可不像某人34.ItremainstobeseenWh--words..是否.还有待于看.(不用that,if作连接词)35.Itonlyremainsforsb.todo剩余的只是要某人做某事.Eg:We’vegoteverythingready.Itonlyremainsforyoutocometodinner .36.Onemoment.,andnow刚才一会儿还在做而现在却..37.Notall/both/everyone表示部分否定38.Suchis/are..这(些)就是.(谓语代词单复数由后面名词决定)39.I’drather(not)do/havedone我宁愿..I’drather+从句(从句中用过去时或过去完成时)40.It’simportant/necessary/strange/surprising.+that(用陈述语气或shoulddo)41.Ilike/hate/appreciateitthat/when等从句(it表示后面从句的这种情况)Eg:Iappreciateitifyouwillgivemeahand.42.Bythetime+从句(一般现在时/过去时)，主句(将来完成时/过去完成时)43.,asisoftenthecasewithsb./asisusualwithsb.(as引导非限制性定语从句)44incase/lest/forfearthat.(从句中用陈述言语或shoulddo)45.While置于句首可表示Aslongas或AlthoughEg:Whilethereislifethereishope.[要学习网一直在为调动你的学习积极性而努力]WhileIadmithisgoodpoints,Icanseehisbadones.46.cannot(never)too+adj.(adv.)/adj.(adv.)+enough“越越好”“非常”too+adj.(anxious/eager/willing/ready/glad等)+todo.表示肯定意思Eg:Ican’tthankyouenough.我非常感激你.Hewastoogladtoseehisfather.=Hewasverygladtoseehisfather.47.no t/neve等表示否定的词与比较级连用表示最高级，如：Eg:-----Doyouagreewithhissuggestion?-------Ican’tagreemore.48.Whatif..要是.怎么办?Eg:Whatifhedoesn’tcometomorrow?49.more..than与其.不如..Eg:Heismorenervousthanfrightened.50.Itis/hasbeen+一段时间+since从句(从句中如为延续性动词,则实际透露的意思相反)Eg:Itistwoyearssincehedrank.他不能喝酒已两年了.高考英语语法大全：固定搭配用法阐述(一)1.It’sthefirsttimethat(从句中用现在完成时)Itwasforthefirsttimethat(强调句，对状语forthefirsttime进行强调)It’s(high)timethat(从句中用过去时或shoulddo)2.It’sthesamewithsb/Soitiswithsb表示某人也如此(前句中既有肯定又有否定或两个不同类的谓语动词)3.beabouttodo/bedoingwhen正要做/正在做就在那时4.Aistwice/threetimesas+原级+asBA是B的两倍/三倍Aistwice/threetimesthen.ofB.A的是B的两倍/三倍Aistwice/threetimes+比较级+thanBA比B多两倍/三倍5.It’sawasteoftime/moneydoing/todosth做浪费时间/金钱It’snouse/gooddoing做是没有用的It’spossible/probable/(un)likelythat很可能Itmakesgreat/nosensetodo做某事很有/没意义6.There’snouse/gooddoing做没有用There’snosense/point(in)doing做没有意义Thereisnoneedforsth/todo没有过必要做Thereis(no)possibilitythat(同位语从句)很可能/没可能7.The+比较级,the+比较级越,越注意：前半句为从句，用一般现在时代替从今以后时;8.Itseems/appears(tosb)thatsb在某人看来某人=Sb.seems/appearstobe/todo/tobedoing/tohavedoneItseems/looksa sif好象/似乎9.It(so)happenedthatsb某人碰巧=Sb.happenedtobe/todo/tobedoing/tohavedone10.Itissaid/thought /believed/hoped/supposedthatsb=Sb.issaidtobe/todo/tobedoing/t ohavedone(注意：这种片语里如带动词hope则不能变成简单句，因为无hopesb.todo结构)12.suchthat如此以致于(引导结果状语从句)suchas像的这种(as为关系代词，引导定语从句，在从句里充当主、宾、表)13.DoyoumindifIdosth.?/WouldyoumindifIdidsth.?你介意我做吗?14.Thechanceisthat/(The)Chancesarethat很可能15.Check/Makesure/Seetoit/Seethat(从句中所常用一般现在时)确信/务必16.dependonitthat取决于seetoitthat负责/设法做到注意：除了except/but/in等介词可以直接留that从句，其它介词后必须用it做形式宾语;17.Itis/was+介词短语/从句/名词/代词等+thatHow/When/Where/Whyis/wasitthat?注意：此句型为强调句，当被强调的为表示人的词时，还可用who 连接;强调主语时，上面从句后的谓语动词应与前面的主语保持一致;注意与定语从句的区别)18.Howisitthat(这几个句型都表示“怎么会?”“怎么发生的?”)He+从句?Howdoes/eabout?(Howdiditcomeaboutthat?)如:Heyouarelateagain?19.Thereseems/appears/happenstobe/mustbe/can’tbe/is(are,was, were)saidtobe/is(are,was,were)thoughttobe表示“.似乎有/碰巧有/一定有/不可能有/据说有/认为有”介词(如of)therebeingwant/wish/expecttheretobe要/希望/期待有adj./adv.enoughfortheretobe足够会有注意：therebeing/theretobe为therebe的非谓语形式;Itissaid/thoughtthatthereis/are=Thereis/was/are/weresaid(t hought)tobe如：Eg:They’veneverdreamoftherebeingsuchagoodchanceforme.Itwon’tbecoldenoughfortheretobeafrosttonight.20.疑问词+插入语+陈述语序?Eg:Whodoyouthinkhe’llhaveattendthemeeting?高考英语语法大全：固定搭配用法总结(二)21.Butfor+n/pron,sb./sth.would(not)havedone不是,某人早就(表示虚拟语气)=Ifithadnotbeenfor/Iftherehadnotbeen22.Itwon(’t)belongbefore+从句(从句中用一般现在时)不久/很久就要Itwas(not)longbefore+从句(从句中用一般过去时)不久/很久才23.Thosewho(从句及主句中谓语动词用复数形式).Anyonewho=Whoever(从句谓语及主句中谓语动词用单数方式)24主句(一般现在时或过往时)when从句(might/shoulddo或might/shouldhavedone)表示”对比”,意思为“本该(可)而却”,主句中为陈述语气,从句里为虚拟语气Eg:Whyareyouherewhenyoushouldbeinschool?你峭腹上学的怎么在这儿?Hestoppedtryingwhenhemighthavesucceeded.本该已成功了他却停止努力了.25.Thereis/Sbhavenodoubtthat(同位语从句,that不可省略)毫无疑问Thereis/Sbhavesomedoubtwhether(同位语从句不可用if)不确定是否Sb.doubtif/whether某人怀疑是否Sb.don’tdoubtthat某人不怀疑26.immediately/directly/instantly/themoment+从句on/upon+n./doingNosoonerhadsb.donethan(过去时)Hardlyhadsb.donewhen(过去时)注意：这几个结构都表示“一就”;27.everytime/eachtime/thelasttime/thefirsttime/nexttime+从句(名词性短语引导一个时间棒状语句)anywhere/everywhere+从句(相当于wherever引导的地点状语从句)Eg:Youcangoanywhereyoulike.Nexttimeye,pleasebringyoursonalong.28.Ifonly/Iwish+从句(用过去类时态)表示虚拟语气,“要是就好了”“但愿就好了!”29.considering+n.或pron.或that从句/seeingthat考虑到/鉴于Given+n./pron作状语,表示“在有的情况下”“如果有”“假定”,有时也表示”考虑到”Eg:Seeing(that)herefusedtohelpus,thereisnoreasonwhyweshouldhe lphiGivengoodhealth,Ihopetofinishtheworkthisyear.Giventheirinexperience/thattheyareinexperienced,they’vedonea goodjob.30.Therewasatimewhen曾经有那么一度31.otherthan与no,not,none等否定词连用,表示肯定意思,如:Eg:ItwasnoneotherthanMr.Smith.这正是Smith先生.32.Notuntildid/do/does/willsb.doItwas/isnotuntilthatsb33.It’s(un)likesb.todo/tohavedone做某事很像某人/做某事可不像某人34.ItremainstobeseenWh-words是否还有待于看.(不用that,if作连接词)35.Itonlyremainsforsb.todo剩下的只是要某人做某事.Eg:We’vegoteverythingready.Itonlyremainsforyoutocometodin ner.高考英语语法大全：下挂搭配用法总结(三)36.Onemoment,andnow刚才一会儿还在做而现在却37.Notall/both/everyone表示部分否定38.Suchis/are这(些)就是(谓语动词单复数由词语后面名词决定)39.I’drather(not)do/h avedone我宁愿..I’drather+从句(从句譬如过去定冠词时或过去完成时)40.It’simportant/necessary/strange/surprisingthat(用陈述语气或shoulddo)41.Ilike/hate/appreciateitthat/when等从句(it表示后面从句的这种情况)Eg:Iappreciateitifyouwillgivemeahand.42.bythetime+从句(一般现在时/过去时)，主句(将来完成时/过去完成时)43.asisoftenthecasewithsb./asisusualwithsb.(as引导而非限制性定语从句)44incase/lest/forfearthat(从句中用陈述语气或shoulddo)45.While置于句首可表示Aslongas或AlthoughEg:Whilethereislifethereishope.WhileIadmithisgoodpoints,Icanseehisbadones.46.cannot(never)too+adj(a dv)/adj(adv)+enough“越越好”“非常”too+adj(anxious/eager/willing/ready/glad等)+todo表示肯定意思Eg:Ican’tthankyouenough.我非常感激你.Hewastoogladtoseehisfather.=Hewasverygladtoseehisfather.47.no t/never等表示否定的词与比较级连用表示最高级，如：Eg:--Doyouagreewithhissuggestion?--Ican’tagre emore.48.Whatif要是怎么办?Eg:Whatifhedoesn’tcometomorrow?49.morethan与其不如Eg:Heismorenervousthanfrightened.50.Itis/hasbeen+一段时间+since从句(从句中如为延续性动词,则实际表示的意思相反)Eg:Itistwoyearssincehedrank.他不喝酒已两年了.。

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高中英语It用法及其句型和固定搭配讲解"It" 用法及其句型和固定搭配，是高中英语语法的重点、难点，又是近几年高考的热点，因此应给予充分的重视，现将it用法归纳如下：一、It用作实词表达以下概念:指代前文提到的事物，前文中的this, that;替代前文中的内容;指代一位性别不明的小孩或未知的人;指代未指明但谈话双方都知道的那件事;指代时间、天气、气候、距离等自然现象……二、It用作形式主语替代作主语的从句、动词不定式、动名词，而把真正作主语的从句、动词不定式、动名词置于句尾。

It 作形式主语的常见句型：1. 代作主语的动词不定式，其句型为(1) It be adj. (for sb.) to do sth.此处adj. 通常为描述事件的形容词：easy, difficult, hard,necessary, unnecessary, possible, impossible, likely, unlikely, right, wrong,important, unimportant, legal, illegal, well-mannered, ill-mannered, polite,impolite, clear, obvious, certain, suitable, proper, fit, useful, useless,dangerous…例It is illegal (for a teenager) to drive a car without a license.(2) It be adj. of sb. to do sth.此处adj. 通常为描述人的形容词：kind,unkind,nice,rude,cruel,considerate, thoughtful, thoughtless, careful, careless, silly, foolish,stupid, clever, wise, crazy.例It's kind of you to help me with the problem.(3) It替代作主语的动名词的常见句型It's no good/use doing…It's (well)worth doing…It's (well)worth one's while doing/to do…It's (well)worth while doing/ to do例It's no use crying over spilt milk.2. It替代作主语的从句常见句型(1) It is + noun +从句例It is no secret that the president wants to have a second term atoffice.(2) It is adj. +clauseIt's surprising that…(should)………竟然……It's a pity/shame that…(should)………竟然……例It's important that you should apologize to her for yourrudeness.(=It's of much importance that you should apologize to her for your rudeness.)(3) It verb sb. + clause= It is v-ing + clauseIt+surprise/delight/interest/disappoint/worry/disturb/ann oy/amaze/bother/concern/frighten/please/anger sb. that…例It worried me that she drove so fast.(= It was worrying that shedrove so fast.)(4) It verb (to sb.) that…= sb/sth verb to do(verb = appear, seem, come about, emerge, follow, chance, happen,occur, transpire, turn out , work out)例It (so) happened/chanced that they were out.(=They happened/chanced to be out.)(5) It is v-ed that…=sb/sth is to do(verb=say, report, think, believe, hope, expect, agree, accept,decide, determine, intend, plan, understand, know)例It is said that the couple have gotten divorced.(=The couple are said to have gotten divorced.)三、It作主语的句型1. It takes sb. …to do…(=sb takes…to do…)某人用多长时间做某事例It took the men a week to mend our roof.(= The men took a week tomend our roof.)2.It's (just)(un)like sb. to do…(不)像某人做某事的风格例It was (just) like him to think of helping us.3.It's (about/high) time that…should /v-ed…是该做某事的时候了例It's(about/high) time that we should take action.4.It's the x-th time (that) …have v-ed…第几次做某事了例It's the third time that he has failed the driving test.5.It is/has been…since …continuous v-ed(延续性动词) 某动作已有多长时间不发生了6.It was(not)…before…过(不)了多长时间某动作发生了四、It 作形式宾语用来替代作宾语的从句、动词不定式、动名词，而把真正作宾语的从句、动词不定式、动名词置于句尾。

常用于考时态的十大句型常考固定搭配情态动词的用法1、sb was doing sth when…某人正在干某事这时……I was thinking about my new plan whan a good idea occurred to me. 我正在考虑我的新计划，这时一个好主意浮现出来。

说明：在这个句中，主句的谓语动词通常是延续性动词，从句的失态用一般过去时，when 翻译成“这时”。

2、sb was(just) about to do sth when…,某人正要干某事这时……They were just about to set out when it began to rain.他们正要出发，这时下起雨来了。

说明：在这个句型中，be (just) about to do 可以换成sb was/were on the point of doing sth when…, when翻译成“这时”。

3、sb had just done when…某人刚干完某事这时……I had just lain down when the telephone rang.我刚躺下，这时电话铃响了。

说明：在这个句型中，just用于加强语气，也可以不要，when翻译成“这时”。

4、it is the first/last…time that sb has/have done…某人第几次干某事……It is the second time that we havevisited your firm.我们是第二次参观你们的公司。

说明：在“某人第几次干某事”这个句中，that之后的时态要用现在完成时，如果主句是it was…,从句时态随之换成过去完成时。

例如：It was the third time that we had seen this film star.我们是第三次看见这个电影明星。

5、Hardly had sb done…when sb did…某人刚刚干完某事这时…….Hardly had they arrived at the airport when they received a warm welcome.他们一到机场就受到了热烈欢迎。

V-ing形式的基本用法（1）作主语：Seeing is believing.百闻不如一见。

Talking is easier than doing. –ing作主语时，如果其结构较长，可用it作形式主语，而将作主语的-ing后置。

如：It isn’t much good writing to them again. It’s no use waiting here.（2）作表语：Her job is washing and cooking. My hobby is collecting stamps.（3）作宾语：①作及物动词的宾语。

She likes drawing very much.；②作某些短语动词的宾语。

Mary is thinking of going back to New York.；③do+限定词（my, some, any, the等）+ -ing，表示“做…事”之意，如：We often do our cleaning on Saturday afternoon. Will you do any shopping on Saturday this afternoon? ④作介词的宾语：Her sister is good at learning physics.；⑤作形容词worth, busy等的宾语：This book is well worth reading. –ing 作宾语带有宾语补足语时，要用it作为形式宾语，而将作宾语的-ing后置，如：We found it no good talking like that. Do you think it necessary trying again?（4）作定语：The sleeping child is only five years old. Do you know the man standing at the gate? 注：-ing形式作定语用时，如果-ing只是一个单词，就位于其修饰的名词之前，如果是-ing短语，就位于其修饰的名词之后，-ing作定语时，被-ing所修饰的名词就是该-ing的逻辑主语。