高中英语语法权威解析二---“It”用法及其句型和固定搭配讲解(附练习题)

高中英语语法知识之It的用法总结第一篇：高中英语语法知识之It的用法总结高考英语语法知识之It 的用法总结1．It is + 被强调部分 + that...该句型是强调句型。

将被强调的部分放在前面，其它部分置于that之后。

被强调部分可以是主语，宾语，状语。

强调的主语如果是人，that可以由who换用。

如果把这种句型结构划掉后，应该是一个完整无缺的句子。

这也是判断强调句型与其它从句的方法。

It was they that(who)cleaned the classroom yesterday.It was in the street that I met her father.2．It was not until + 被强调部分+ that...该句型也是强调句型。

主要用于强凋时间状语，译成汉语＂直到．．．才．．．＂，可以说是 not...until...的强调形式。

It was not until she took off her dark glasses that I realized she was a famous film star.= Not until she took off her dark glasses did I realize she was a famous film star.= I didn’t realize she was a famous film star until she took off her dark glasses.3．It is clear(obvious, true, possible,certain....)that.....该句型中it 是形式主语，真正的主语是that 引导的主语从句，常译为＂清楚（显然，真的，肯定．．．）＂是主语从句最常见的一种结构。

It is very clear that he’s round and tall like a tree.= That he’s round and tall like a tree is very clear.4.It is important(necessary, right, strange, natural...)that...由于主句中的形容词不同，that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去。

“it” 两项重点用法Mar 4. 2011 这两项重点用法指的是强调句和it做形式成分。

一.强调句:一）陈述句：It + is / was + 被强调部分+ that / who … ( 强调人时可用who )I met Tom in the street yesterday.针对各个划线部分变强调句：1) It was I that met Tom in the street yesterday.2) It was Tom that I met in the street yesterday.3) It was in the street that I met Tom yesterday.4) It was yesterday that I met Tom in the street.二）一般疑问句：1) Was it I that met Tom in the street yesterday?2) Was it Tom that I met in the street yesterday?3) Was it in the street that I met Tom yesterday?4) Was it yesterday that I met Tom in the street?三）特殊疑问句：1) Who was it that met Tom in the street yesterday?2) Who was it that I met in the street yesterday?3) Where was it that I met Tom yesterday?4) When was it that I met Tom in the street?四）特殊疑问句作宾语从句：I forgot…1) I forgot who it was that met Tom in the street yesterday.2) I forgot who it was that I met in the street yesterday.3) I forgot where it was that I met Tom yesterday.4) I forgot when it was that I met Tom in the street.结论：特殊疑问句作宾语从句时，主谓词序正常。

“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。

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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。

高考英语It的用法It是高考英语中一个极其重要的词，其用法多样，在不同的语境中具有不同的意义。

下面我们将从it的用法、句型和固定搭配三个方面进行讲解。

一、it用作实词1、表示时间、天气、距离、温度等自然现象。

例如：It is Monday today.今天是星期一。

It is raining outside.外面正在下雨。

It is 5 kilometers away from here.距离这儿有5公里远。

2、表示观点、看法、态度等主观想法。

例如：I think it is a good idea.我认为这是一个好主意。

We think it is important to learn English well.我们认为学好英语很重要。

二、it用作形式主语当不定式、动名词或从句作主语时，为了保持句子结构平衡，避免头重脚轻，常用it作形式主语，代替不定式、动名词或从句，而把真正的主语放在句尾。

例如：It is important to learn English well.学好英语很重要。

It took me an hour to finish the homework.我花了一个小时完成作业。

三、it用作形式宾语当不定式、动名词或从句作宾语时，为了保持句子结构平衡，避免头重脚轻，常用it作形式宾语，代替不定式、动名词或从句，而把真正的宾语放在句尾。

例如：I think it is important to learn English well.我认为学好英语很重要。

He found it hard to learn English well.他发现学好英语很难。

四、it用于强调句型中强调句型是英语中一个重要的句型，用于突出强调某个成分，特别是主语、宾语和状语等。

在强调句型中，it没有实际意义，只是起到引导作用。

例如：It is I who am the best student in my class.我是班里最好的学生。

It 的用法It 可用作实词（代词）和虚词（助词）。

实词it 指用于人称和前指（指刚提到的人或物），用于无人称时，做主语，表示时间，距离，天气等。

虚词it 可用作形式主语或形式宾语，也用于构成的强调句型。

（一）实词（代词）1. 用作人称代词1）指人。

例如：Who is it? Is it you, Andrew ?Who is making such a noise ? It must be the children.2）用作前指，代替前文提到过的人或事物。

例如：What a beautiful baby ! Is it a boy ?You have saved my life; I shall never forget it.3 ）代替指示代词this, that。

例如：“What's this ?” “It'sa flag.”4 ）代替一个双方既知所指的东西How 'sit going with you ?2. 用作非人称代词常用作没有具体意义的主语，表示气候，天气，温度，时间，地点，距离等。

例如：1）指天气：It 'sdamp and cold. I think it 's going to rain.2）指时间，季节等：“ what time is it ? ” “It is eight o 'clock. ”I hope it is spring all the year round.3）指距离It is five kilometers from the office to my home.4）指环境，条件等It was very quiet and peaceful here,It was becoming increasing dangerous.5）“无人称it ”也用于表达下列2 个结构表达印象和可能性：It seems as if we've known each other for years, （印象）It looks as though I 'm going to fail the test6）“无人称it ”还用于下列的表达中as it is事实上So be it但愿如此，好吧That' s it !对，是这样！make it到达，成功（二）虚词（助词）1. 作形式主语当动词不定式，动名词，或从句做主语时，通常把她们放在谓语后，而用it 做形式主语。

高考英语中it用法浅析“it”用法及其句型和固定搭配是高中英语语法的重点和难点，也是近几年高考的热点。

它的用法极其广泛、灵活，既可以作人称代词，也可以作非人称代词；既可以充当形式主语和形式宾语，也可以用于强调结构中，构成强调句；它还常常用在某些动词或特殊词类之后，构成习惯用语。

下面就其在高中英语中的使用重点及难点通过例句加以总结：1.作人称代词1）指人，主要用来确定未知人的身份，也可以指性别不详的婴儿。

---Who is it? ---It’s me.---谁呀？---是我。

It’s a lovely baby. Is it a boy or a girl?是个可爱的婴儿，男孩还是女孩？2）指除了人以外的一切动物和事物，是第三人称单数（中性）。

It’s a pet dog. 它是只宠物狗。

I love swimming. It keeps me fit.我喜欢游泳，它让我保持健康。

3）表示推断(不管个数有多少)--- Who is making such a noise? --- It must be children.---谁这么吵？---一定是孩子们。

4）代替指示代词和不定代词Nothing is wrong, isn’t it? 没出什么问题，是吗？1.用作非人称代词，表示时间、天气、气候、距离、温度、地点、金钱等，在句中做主语。

It is six miles to the nearest hospital from here. 从这儿到最近的医院有6英里。

3.充当形式主语，本身无意义，只起一种先行引导的作用，后面的真正主语通常是不定式结构、-ing分词结构、或名词性从句。

1）典型句型：It be(is\was\will be )+ n.\adj.\participle + doingsth\ to do sth\that-clauseIt is difficult to translate this article.翻译这篇文章很难。

高中英语语法：“It”用法及其句型和固定搭配高中英语语法：“It”用法及其句型和固定搭配It 常用的固定搭配1. make it(1)在口语当中相当于succeed，表示：成功、做到、说定、赶上、及时到达例It's hard to make it to the top in show business.(2)在口语中相当于fix the date for，表示“约定好时间”例—Shall we meet next week?—OK. We just make it next Saturday.2. as it is(1)相当于in fact，in reality表示“事实上，实际情况是……”例We had planed to finish the task today，but as it is we probably won't finish it until next week.(2)相当于方式状语从句，表示“照原样”例Leave the table as it is.3. as it were相当于as one might say，that is to say，表示“也就是说，可以说，换句话说”例He is，as it were，a modern Sherlock Holmes.4. if it weren't for…/if it hadn't been for…用来引导虚拟语气，相当于without，or but for，表示“如果不是……，要不是……”例If it weren't for T om，I wouldn't be alive today.5. that's it(1)相当于That's all. That's so much. 表示“至此为止，没有别的了”例You can have one more sweet，and that's it.(2)相当于That's right.表示“对啦”例—I guess the key to the problem is thechoice “A”—That's it.6. catch it在口语中，相当于be punished/scolded for doing sth. wrong. 表示“因做错事而挨骂，受责备，受批评，受惩罚”例We'll really catch it form our teacher if we're late for class again.7. have it(1)相当于say，insist表示“说，主张，表明，硬说”例Rumour has it that they are getting divorced.(2)相当于get to know something，表示“了解，知道，获悉”例I had it from John that she was going abroad.8. have what it takes在口语中，相当于be well qualified for，表示“具有成功的条件”例You can take it from me that your daughter has what it takes to be a star.9. so it seems / appears.10. Keep at it!(Don't give up!)相当于go on，表示“继续做，不放弃”例My teacher asked me to keep at it.11. Go it!(Go on!)拼命干，莽撞12. Now you have done it!(You have done sth. wrong.)13. Now you'll catch it!(You'll be punished.)14. As it happened，…在口语中，相当于it's a pity that…，表示“真不凑巧，真遗憾”例As it happened，they were out.15. As it turned out，…在口语中，相当于it was found to be in the end，表示“最后被证明是”例As it turned out，his statement was false.16. Such as it is(they are)在口语中，相当于although it may not be worth much，表示“虽然没有多大价值”例You can borrow my exam notebook，such as it is.17. Take it/things easy.相当于Don't worry or don't hurry. 用来劝告别人，表示“不要慌，别担心，存住气”例Take it easy! He will do it well.18. Take it from me.在口语中，相当于believe me what I say.表示“请相信我的话，我敢担保”例You can take it from me that he will make it this time.19. For what it is worth…在口语中，相当于although I'm not sure it's of value，表示“不管其价值如何”例Here is the article I promise you，for what it's worth.20. Worth it在口语中，相当于useful，表示“有好处，值得做”例Don't hesitate about it! It's worth it.21. Believe it or not.表示“信不信由你”例Believe it or not，Tom is getting married to Mary next Sunday.22. Take it or leave it. v. 要么接受要么放弃例That is my last offer. You can take it or leave it.23. It all depends/that all depends在口语中，相当于it hasn't been decided yet，表示“那得看情况，还没有定下来”例—Are you going to the countryside for holiday?—It/That all depends.24. It's up to sb.在口语中，相当于it's decided by sb. 表示“由……决定，由……负责，取决于……”例—Shall we go out for dinner?—It's up to you.。

高中英语it的用法一、代词itA. heB. thatC. itD. theman3. Tom's mother kept telling him that he should work harder, but didn't work.A. heB. whichC. sheD. it4. —How _____ going?— Everything is OK.A. is itB. are theyC. is thatD. arethese5. — He was nearly drowned once.— When was ______ ?— _______ w as in 1998 when he was in middle school.A. that... ItB. this... ThisC. this... ItD. that...ThisKeys:1-5. D C D A A二、引导词it专项练习1. _______ is a fact that Global Warming has influenced human beings' life.A. ThereB. ThisC. ThatD. It2. It is wrong _______ treat your mother like that.A. that you toB. of you toC. for you toD.because you3. Is _______ n ecessary to complete the task before National Day?A. thisB. thatC. itD. he4. Does _____ matter if he can't finish the job on time?A. thisB. thatC. heD. it5. He hasn't had any food for two days. that he is so hungry.A. There is no pointB. There is no needC. It is no wonderD. It is no way6. ______ h e has been fired because of his absence for a long time with no reason.A. It is said thatB. They all said thatC. That is announced thatD. It was reported7. It is no use _____ books without reading.A. to buyB. in buyingC. of buyingD.buying8. _______ h uman beings can live on the moon in the next twenty years.A. There seems impossibleB. This is impossible forC. It is impossible ofD. It seems impossible that9. _______ i n the school regulation that students should wear school uniforms at school.A. What is requiredB. What requiresC. It is requiredD. It requires10. —How do you know him well?— ______that we live in the same neighbourhood.A. It isB. That isC. It is becauseD. Ithappens11. I don't think possible to complete the task without good preparation.A. thisB. thatC. heD. it12. I hate ______ when people talk with their full mouth.A. itB. thatC. theseD. them13. He _______ to do morning exercise in the park.A. took a ruleB. made a ruleC. made it a ruleD. tookit a rule14. I would appreciate _____ you would turn off the TV set.A. thatB. it ifC. these ifD. itthat15. I think _____ hard for you ______ t he task on your own.A. it is... doB. this... to doC. that is... doingD. it...to do16. Don't ______ for granted that he will keep his promise.A. take thatB. take itC. make thatD. makeit17. He soon ______ w hy he had done it.A. spoke clearlyB. made it clearC. told clearD. saidit clear18. Do you think _____ no use ______ another apology to him?A. it... to makeB. it is... makeC. it... makingD. that...of making19. We should regard _____ as a social duty to help these poor and homeless people.A. ourselvesB. theseC. itD. us20. I found ______to watch the football match on TV.A. it relaxingB. that is relaxingC. it relaxedD. thatis relaxedKeys:1-5 DBCDC 6-10 ADD CD11-15 DACBD 16-20 BBCCA三、it在强调结构中专项练习1.It was who telephoned me yesterday.A．him B．his C．himself D．he2. was a handbag that John gave Mary at Christmas.A．It B．This C．That D．Such3.Was the room the famous writer had ever lived in?A．that, it B．it , that C．it , where D．that, which 4.Why is it everyone thinks he’s a thief?A．because B．as C．when D．that5. is known to us Mary dances best.A．She, ×B．It, that C．It, she D．She, who Keys:1-5 AABDBKeys:1-5 DCDDA练习题：单项选择1. _______ that I was watching TV when he came to see me.A. It happenedB. What happenedC. That happenedD. It was happened2. The chairman thought necessary to invite Professor Smith to speak at the meeting.A. thatB. itC. thisD. him3. The Foreign Minister said, " ____ our hope that the two sides will work towards peace."A. This isB. There isC. That isD. Itis4. ______ is reported in the newspaper that the terrible flood has caused a loss of 10 million yuan.A. ItB. ThisC. ThatD. As5. It's up to you whether we should go to the art exhibition right now.A. decidingB. to decideC. of decidingD.decide6. Was ________ that I saw last night at the corner?A. it youB. not youC. youD. thatyourself7. It is about two months James leaves school. He is going to be a lawyer.A. whenB. beforeC. sinceD. that8. ______ turn is ______ to clean the blackboard?A. Which... itB. Whose... itC. Which... thatD.Whose. .. that9. The seriously injured man has stopped breathing. will be no possibility ofmaking him come to life.A. ItB. ThereC. ThatD. This10. Space exploration has been made with the development of modern science.A. it possibleB. it wasC. that being possibleD.possible11. To improve my spoken English, I make to recite a passage of English every day.A. a ruleB. it a ruleC. a rule thatD. arule it is12. He moved to a new flat because is only five minutes' walk from the new flat to his office.A. itB. thisC. thatD.there13. It was _______ several years I had an opportunity of seeing the bird again.A. for... beforeB. not for... thatC. for... whenD. notfor... then14. It was with the greatest difficulty the boy gathered the strength to rise.A. with whichB. thatC. whichD.what15. It is of great help Radio English on Sunday. It is well received.A. to pick upB. of picking upC. to pickD.picking upKeys: 1-5 ABDAB 6-10 ABDBD 11-15 BABBA基础题：一．单项选择：1. It is high time that our child to do some homework.A. learnedB. learnC. will learnD.would learn2. It is essential that every child the same educational opportunity.A. hasB. could haveC. haveD. had3. It was going to be some time he saw his parents again.A. sinceB. untilC. whenD.before4. _______ the 1500's_______ the first European explored the coast of California.A. It is not until... thenB. It was until... thatC. It's not until... whenD. It was not until... that5. I just wonder ________ that made them so depressed.A. why it didB. what they didC. how it wasD.what it was6. It was eight o'clock I got to the school this morning, made our teacher very angry.A. when... thatB. that... thatC. that... whenD.when... which7. ______ , they all went to the lake to swim.A. It was a hot dayB. Being a hot dayC. It being hotD. For it was a hot day8. I don't mind her criticizing me, but is how she does that I object to.A. itB. thatC. thisD.which9. — ______ seems to be something wrong with the machine.—Yes, _____ got a lot of noise.A. It... it'sB. There... it'sC. It... there'sD.There... there's10. ______ a certain doubt among the workers as to the necessity of the work.A. There areB. There isC. They areD. Itis11. Joan had often heard said that Marley had no money.A. oneB. onceC. itD. her12. When you go outing with your sisters, you must see to that they are safe.A. everythingB. itC. thatD.yourself13. He said, " a long way to school. a long way to go yet before we arrive."A. It is... There isB. There is... It isC. There is... There isD. It is... It is14. —Is it my age the boss minds?—I'm afraid not. He will consider necessary to have an experiencedassistant.A. which... itB. that... itC. which... thatD.that... that15. ______ easy to do the repair. All you need is a hammer and some nails.A. You areB. That isC. There isD. ItisKeys:1-5 ACDDD 6-10 DCABB 11-15 CBABD提升题：一、翻译。

高中英语it 基本用法全归纳及易错点讲与练it 基本用法全归纳it 看似简单，但用法却并不简单。

它不仅可以指人也可以指物，不仅可以指时间和距离也可指自然现象和自然环境，不仅可用作形式主语也可用作形式宾语等。

一、用于指事物二、i t用于指代前面已提到过的事物，这是其基本用法。

如：Water expands when it freezes. 水结冰时体积膨胀。

This is our new car. I bought it yesterday. 这是我们的新车。

我昨天买的。

He didn’t give the money to John, but he gave it to me instead. 他没把钱给约翰, 却给了我。

I like pepper but it doesn’t like me. 我喜欢吃胡椒, 但胡椒不适合我的肠胃。

三、用于上文提到的情况it有时并不指某种具体的事物，而是笼统地指前面提到的情况。

如：If you keep doing that, it will do harm to your health. 你要是继续那样，会对你的身体有害的。

Her mother kept telling her not to go out at night, but it didn’t help. 她母亲老叫她晚上不要出去，但是没用。

四、用于指人it有时可用于指人，但通常只限于对方身份不明确的情况下才用，即it用于指人主要用于引出或确定一个的身份。

比较：Mr Smith is at the door. He wants to see you. 史密斯先生在门口，他想见你。

(句中用代词he是因为上句已明确指明是Mr Smith)Someone is at the door. It must be Mr Smith. 有人在门口，一定是史密斯先生。

(句中用代词it是因为上句并未明确指明是谁，it在此是为了引出Mr Smith)下面一句用it也属同样的道理：I knew it was you, I could recognize your voice a mile off! 我知道是你，好远就能听出你的声音。

高中英语高考总复习---it用法及强调句型知识讲解及巩固练习题（含答案解析）真题再现1.Bach died in1750,but it was not until the early19th century______his musical gift was fully recognized.（2015重庆高考）A.whileB.thoughC.thatD. after2.It was when we were returning home________I realized what a good feeling it was to have helped someone in trouble.（2015湖南高考）A.whichB.thatC.whereD.how3.How would you like______if you were watching your favorite TV program and someone came into the room and just shut it off without asking you?（2015浙江高考）A.themB.oneC.thoseD.it4.If you’re buying today’s paper from the stand,could you get for me?A.oneB.suchC.thisD.that5.Studying Wendy’s menu,I found that many of the items are similar to ____of McDonald’s.A.thoseB.oneC.anyD.all6.No matter where he is,he makes_____a rule to go for a walk before breakfast.A.him B this C.that D.it7.This is not my story,nor______the whole story.My story plays out differently.A.is thereB.there isC.is itD.it is1.C。

高中英语语法权威解析目录:第01章名词性从句第02章“It”用法及其句型和固定搭配讲解第03章高中英语语法中的省略现象第04章主谓一致第05章动词不定式第06章倒装结构第07章定语从句第08章被动语态第09章祈使句第10章感叹句第11章疑问句第12章名词第一章名词性从句在句子中起名词作用的句子叫名词性从句(Noun Clauses）。

名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。

一．主语从句主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。

1. It 作形式主语和it引导强调句的比较It 作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。

而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。

被强调部分指人时也可用who/whom。

例如：a) It is a pity that you didn‟t go to see the film. 你不去看那场电影真可惜。

b) It doesn‟t interest me whether you succeed or not.我对你成功与否不感兴趣。

c) It is in the morning that the murder took place.谋杀案是在早上发生的。

（强调句型）d) It is John that broke the window.是John打碎的窗户。

（强调句型）2. 用it 作形式主语的结构(1) It is ＋名词＋从句It is a fact that … 事实是…It is an honor that …非常荣幸It is common knowledge that …是常识(2) It is ＋形容词＋从句It is natural that… 很自然…It is strange that… 奇怪的是…(3) It is ＋不及物动词＋从句It seems that… 似乎…It happened that… 碰巧…It appears that… 似乎…(4) It ＋过去分词＋从句It is reported that… 据报道…It has been proved that… 已证实…It is said that… 据说…3. 主语从句不可位于句首的五种情况：（1）if 引导的主语从句不可居于复合句句首。

语法辅导：高一英语it相关句型详解知识总结归纳：（一）it用做形式主语或形式宾语：根据句子结构的需要，it用做形式主语或形式宾语，而真正的主语或宾语（to do 短语，doing短语，名词性从句）则放在句尾。

主要句型：It’s +形容词/名词+连词+名词性从句to do sth.doing sth.find / make / think / feel it +形容词/名词+连词+名词性从句to do sth.doing sth.例句：1. It will become more and more important to have a good knowledge of English .2. It’s usual for close friends to have similar ideas and beliefs .3. It’s a pity that I didn’t think of it earlier.4. It’s no use going there so early.5. Out teacher thinks it no good learning without practice.6. Didn’t I make it clear to you that I was not coming ?7. We found it strange that no one would take the money.（二）其他句型1. It takes+时间段+sb.+ to do sth.2. 表示“据说，据报道，/人们认为/相信/建议等It’s said that…….It’s reported that ……It’s believed/thought/suggested that……例句：1. It generally takes time to reach this point—being on the same wavelength .2. It is believed that the two children went off exploring（探险）on their own and get stuck on the cliff .3. It’s suggested that we should have a meeting to discuss the problem .4. It was once predicted（预测）that British and American English would becomeseparate languages finally .（三）it在强调句型中：在英语中，为了突出强调句子的某一个成分（谓语除外），达到强调或使听话人特别注意这一部分的目的。