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句型总结一.it作形式主语的句型。
1.It is important /significant that we (should) do ......Eg: it is important that we should protect the environment and begin with trifles.2.it is necessary /essential for sb. to do sth .Eg: It is necessary for a teacher of infants to be patient.3.It turned out that ... 结果是/原来是... =As it turned out ...Eg: At first sight , I didnot recognize him . It turned that he was one of my former friends .4.It is no/hardly any /not much/small/little wonder that.5.It will /will not be some time before ... 用了/用不了多长时间就...Eg: It will not be long time before you realize what a noble man Mr. zhang is .6.It(so) happened that ...Eg: It (so)happened that he was passing by and jumped into the icy water to save the drowning boy .7.It is strange(surprising ,a pity ) that ...Eg: It is strange that he should have left without notice .8.It is not until ... that ...直到........才...Eg: It was not until the students were getting near_sighted that they began to pay more attention to the care of their eyes.9.It is /was ... that/who ...正是.....做了...Eg: when was it that you got the problem solved?10.when it comes to .... , sb. ...... 当谈起.......,人.......Eg: when it came to the problem, he seemed a bit nerous .二.What引导的名词性从句句型.1.what is extraordinary is that ..... 特别或异常的是..........2.what I want to say is that ....我想说的是3.what impressed/surprised/worried/disappointed me most is that ....4.what makes matters worse is that .....5.That is that........这就是.......三.As引导的状语从句句型.1.As time went on ,I came to realize ........2.As is known to all...3.As far as I am concerned ....就.......而言4.(Just)As the saying goes5.As is often the case ........是常有的事....四.That引导的表语从句句型.1.The reason why ....is that ......2.The problem /question/fact is that ...五.以Sb./sth.为主语的句型.1.sb.be about to do sth.(be doing sth./be going to do sth.)when suddenly.... ..人正要做...事,这时....2.Sb.takes great pleasure in sth./doing sth. ..人乐意做..事3.Sb.does not hesitate to do sth. .. 人毫不迟疑地做..事4.Sb.must attach great importance to sth./doing sth. ..人必须高度重视..事或做...事5.Sth./Sb.plays an important part in sth./doing sth. ..人或事在..方面起着重要作用.6.Sb.should take advantage of ... to do sth. ..人应该利用...做..事.7.I have recently made a survey of /among sb.about sth. 我最近做了关于..人的调查8.I am looking forward to seeing you soon .我期待很快见到你.9.The same is true of /for....情况也符合/适合10.As for ...,it is a different matter .对于...来说,情况就不一样了.11.with the development of ..... 随着....的发展,。
It的用法总结在英语中,it有许多不同的用法,它既可以用作代词(如人称代词、非人称代词)，也可以用作引导词（作形式主语或形式宾语），还可以用来构成强调句型。
.it用作代词(1) 用作人称代词在句子中作主语或宾语；指前面已经提到过的事物、动物或人，且it指特定的事物；如果指前文中提到的事物中的任何一个，用one。
one可以与any, each, every, not等连用，但one不可代替不可数名词。
—where’s your car?—it’s in the garage. 你的汽车在哪儿呢？在车库里。
(指代物品your car)did you hit it? 你打中了吗？ (指代事件)the baby cried when it was hungry.这婴儿饿时就哭。
（指代婴儿，尤指性别不详或无所谓时）—who is that?—it’s me. 是谁？我。
(指一定情景中所确定的人或事物，此时相当于指示代词，代指this和that,有时也指人)—what’s this?—it’s a box. 这是什么？一只箱子。
(2) 作非人称代词表示天气、日期、时间、温度、距离、价值、路程、度量、自然现象与环境等。
也可模糊地指一般情形或上文的部分或整个意思。
译成汉语时，it通常不一定译出来。
it’s a long time since they left. 他们走后很久了。
it’s two miles to the beach.离海滨有两英里远。
that’s just it—i can’t work when you’re making so much noise.原因就在这里——你弄出这么大的声音，我工作不了。
另外，需要注意两点：（1）“it’s time…”后面可以接不定式和介词短语表示“是做……的时候了”。
如：it’s time for supper. it’s time to have supper.(2) “it’s time…”后面还可以接一个从句，但是从句中的谓语动词一定要用过去式即虚拟语气，如：it’s time we had lunch.是我们吃饭的时候了。
It的用法一、Tell the functions for “it" in each sentence:1、—--What's the weather together？—-—It is fine。
2. It is hard to communicate with him。
3。
I find it hard to communicate with him。
4。
It is Li that who cleaned the classroom。
5。
It is a book。
二、It 用法归纳1,指代it（1）.用作人称代词：指代物、整个句子(2）用作非人称代词2，形式it:（1)作形式主语（2)作形式宾语3，强调it4，特殊句型5。
在答语中指代this/that：1）.—-—Whose book is that? ——-It’s mine.三、特别注意：it, one和that作替代词的用法及区别1。
it代替前面提到的同一事物,该事物既可以是可数名词也可以是不可数名词。
(特指，指代单数，指代物,同名同物）Can I borrow your pen?-Sorry，I'm using it。
2。
one代替前面提到的同类事物中的一个。
该事物只能是可数名词，前面可以有冠词，也可以被this、that或形容词修饰,其后也可以有定语. (泛指，指代可数名词，指代人或物,同名异物）I have a bike。
Do you have one?Eg：（1）.I bought a dictionary three years ago and I am still using______ now。
(2) I bought a dictionary three years ago but I am going to buy a new _______soon. （3)。
that代替前面提到的同类事物中特指的一个。
（完整版）It的用法总结It的用法总结在英语中,it有许多不同的用法,它既可以用作代词(如人称代词、非人称代词)，也可以用作引导词（作形式主语或形式宾语），还可以用来构成强调句型。
.it用作代词(1) 用作人称代词在句子中作主语或宾语；指前面已经提到过的事物、动物或人，且it指特定的事物；如果指前文中提到的事物中的任何一个，用one。
one可以与any, each, every, not等连用，但one 不可代替不可数名词。
—where’s your car?—it’s in the garage. 你的汽车在哪儿呢？在车库里。
(指代物品your car)did you hit it? 你打中了吗？ (指代事件)the baby cried when it was hungry.这婴儿饿时就哭。
（指代婴儿，尤指性别不详或无所谓时）—who is that?—it’s me. 是谁？我。
(指一定情景中所确定的人或事物，此时相当于指示代词，代指this和that,有时也指人)—what’s this?—it’s a box. 这是什么？一只箱子。
(2) 作非人称代词表示天气、日期、时间、温度、距离、价值、路程、度量、自然现象与环境等。
也可模糊地指一般情形或上文的部分或整个意思。
译成汉语时，it通常不一定译出来。
it’s a long time since they left. 他们走后很久了。
it’s two miles to the beach.离海滨有两英里远。
that’s just it—i can’t work when you’re making so much noise.原因就在这里——你弄出这么大的声音，我工作不了。
另外，需要注意两点：（1）“it’s time…”后面可以接不定式和介词短语表示“是做……的时候了”。
如：it’s time for supper. it’s time to have supper.(2) “it’s time…”后面还可以接一个从句，但是从句中的谓语动词一定要用过去式即虚拟语气，如：it’s time we had lunch.是我们吃饭的时候了。
it的用法总结it 的考点：1.为避免重复，it可用来代替前面说过的短语或句子。
如：I tried to persuade my father to give up smoking, but found it impossible. (it=to persuade my father to give up smoking)2.It/This/That+be+the first(second, third...) time+that这个句型表示截止到说话时为止的某人的一种经历，关键是注意time前有序数词，主句是一般现在时is时，从句要用现在完成时；如果主句用一般过去时was 时，则从句须相应地用过去完成时。
如：This is the first time(that) these Europeans have visited the Great Wall.It was the fifth time(that) I had paid a friendly visit to America.3.强调句：It's/was+被强调成分+that/who+其他成分原句：I told Jim the news in our office yesterday.【注】强调句与主语从句虽然在形式上很相似，即都含有it is(was)...that。
但，区别在于：强调句去掉itis(was)…that之后，句子结构仍然完整，而主语从句却不能这样。
如：(It is)our hope(that) the two sides will work towards peace.4.it 作形式主语：1）It is/was+adj.+subject-clause可用于此句型的形容词有：clear, certain, funny, good, impossible, likely, natural, obvious, possible, probable, strange, surprising, true, unusual, wonderful 等。
It的用法及句型总结"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，如前文中的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 on e's while doing/to do…It's (well)worth while doing/ to do例: It's no use crying over spilt milk（覆水难收）.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 at office.(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 your rudeness.(=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/annoy/amaze /bother/conc ern/frighten/please/anger sb. that…例: It worried me that she drove so fast.(= It was worrying that she drove so fast.)(4) It verb (to sb.) that…= sb/sth verb to do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.)(6) It is v-ed that … (should)…(verb=demand, request, require, order, suggest, advise, recommend例 It is suggested that they should begin with the third question.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 to mend 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) 某动作持续了多长时间例: It's 10 years since he lived here6. It was(not)… before…过(不)了多长时间某动作发生了例: It was not long 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。
中高考复习专题-it用法总结it常用句型短语1.it作形式主语常用句型。
（1）It is a pity／shame that...真可惜······（2）It is no wonder that...······不足为奇／并不奇怪（3）It seems／appears that...似乎／看来······（4）It looks／seems as if／as though...看起来／似乎／好像······（5）It happens that...碰巧······（6）It occurs to／comes to／strikes／hits sb. that...某人突然想起来······（7）It is said／reported that...据说／据报道··...·（8）It is certain that...肯定······（9）It is well known／acknowledged that...众所周知······（10）It is no use／no good doing sth.做某事没用／没好处（11）It takes sb. some time to do sth.做某事花某人一些时间2.it作形式宾语常用句型。
（1）主语＋think／believe／suppose／consider／feel／make／keep...＋it＋adj.／n.＋for／of＋sb.to do sth.／that从句（2）主语＋think／believe／suppose／consider／feel／make／keep...＋it+useless/no use/no good...doing sth.3．与it相关的其他常用短语和句型。
it的用法总结经典句型一、介绍ITIT即信息技术（Information Technology），是指利用计算机以及与之相关的软硬件设备来存储、传播、处理和应用信息的一门学科。
随着科技的不断发展，IT 已经广泛应用于各行各业，成为现代社会不可或缺的工具。
二、描述IT的重要性1. IT在商业领域的应用- IT提供了高效的数据管理和分析工具，帮助企业更好地理解市场需求，并制定合理的决策；- IT使销售过程更加自动化和数字化，提高了产品销售效率；- IT推动了电子商务的发展，打破了时间和空间限制，为消费者提供了更便利的购物体验。
2. IT在教育领域的应用- IT改变了传统教育模式，通过在线课程和远程教育平台，帮助学生获得全球优秀教育资源；- IT提供了多样化的学习方式，如互动教学、游戏化学习等，激发学生兴趣并提高学习效果；- IT打破了传统教室限制，实现了虚拟教室的概念，使学生可以随时随地进行学习。
3. IT在医疗领域的应用- IT改善了医疗服务流程，如电子病历管理系统、在线预约挂号等，提高了就医体验；- IT将各个医疗机构连接起来，实现了信息互通和数据共享，为诊断和治疗提供了更准确的依据；- IT推动了远程医疗的发展，为遥远地区的患者提供了专业的医疗服务。
三、阐述IT常用句型1. “通过IT技术，我们能够…”- 例句：通过IT技术，我们能够实现全球范围内实时数据传输和分析。
2. “IT技术在…方面发挥着重要作用。
”- 例句：IT技术在金融行业方面发挥着重要作用，在交易处理、风险管理等方面提高了效率和准确性。
3. “借助IT工具，我们可以更好地…”- 例句：借助IT工具，我们可以更好地管理客户关系，并提供个性化的产品推荐和服务。
4. “IT的发展为…提供了机会/挑战。
”- 例句：IT的发展为企业提供了更多营销渠道，但也给竞争对手带来了更大的压力。
5. “随着IT技术的进步，我们可以预见…”- 例句：随着IT技术的进步，我们可以预见人工智能将在各个行业中发挥重要作用。
浅谈It 强调句型的判定及与其它易混句型的比较It引导的强调句型是一个非常重要的句型，在实际应用中我们可以通过该句型对句子的主语（含主语从句），宾语（含宾语从句）和状语（含状语从句）加以强调，从而提高语言的表现力。
It强调句型主要有三种：（1）陈述句：It is/was +被强调部分+that/who/whom+句子其他成分(其他成分用陈述语序）；（2）一般疑问句：Is/Was+it+被强调部分+句子其他成分？（3）特殊疑问句：疑问词+is/was+it+that+句子其他成分？随着学习的深入，学生在经过一定的训练和积累之后，往往会对it强调句型和一些相似句型混为一谈。
本文拟就强调句型的一般判定及与一些相关句型的比较进行较为深入的整理，以期对学生的进一步学习起抛砖引玉的作用。
一It强调句型的一般判定方法如何判定一个句子是否是强调句型非常重要，下文所整理的强调句与易混句型的比较，无一不涉及到强调句型的判定方法。
我们只要掌握了强调句型的判定方法，就可非常容易地辨别强调句型与非强调句型。
判定方法（一）：看It is/was...后的引导词。
一般而言，若It is/was...之后是that/who/whom，则为强调句；若为其他的引导词如when,where,why,which,before,since等，则为非强调句。
请看下列例句：（1）It was in the room that we met for the first time. (2) It is his little son that/who/whom the father worries about most. (3) It was already midnight when I finished my composition. (4) It was the museum which we visited last Sunday. (5) It is the school where I used to work. (5) It is the reason why I wasn't able to come here last night.根据判定方法，（1），（2）为强调句，（3），（4），（5）为非强调句，请留意划线词。
判定方法（二）：看句子中能否去掉It is 和that/who/whom。
若去掉后句意完整无语法错误则为强调句，若句意不完整或很荒谬则为非强调句。
注意：在去掉It is/was和that/who/whom 后,原来is/was 后的成分有时需要调整到句子中的其他位置如谓语动词或句末后再来判断，判断方法同上述。
请看下列例句：（1）It was Wei Fang that/who met me in the park yesterday.我们去掉It was 和that/who 后得到句子：Wei Fang met me in the park yesterday.此句句意完整无语法错误，故原句为强调句。
（2）It is English that Mr Smith speaks every day.我们去掉It is 和that并将English调至speaks后得到句子：Mr Smith speaks English every day.此句是一个典型的主谓宾句型，故原句为强调句。
(3)It is in the reading room that we often have a discussion.去掉It is和that之后，将in the reading room调至句末（也可不调）得到句子：We often have a discussion in the reading room.该句语意完整无成分残缺，故原句为强调句。
(4)It is a pity that we missed the wonderful film.去掉It is和that之后，无论将a pity 放在句首或句末，新句子均不合理。
请看：A pity we missed the wonderful film./We missed the wonderful film a pity.(5)It is necessary that we should spend more time on English.此句是非强调句，分析同例（4）。
判定方法（三）：看It is/was之后部分的词类或是否是从句。
一般而言，若为形容词，则为非强调句，此句子通常为it作形式主语的句型，形容词作表语，that 之后为主语从句；eg. It is important that people should develop a healthy eating habit. 若为名词性的成分（包括名词，名词短语或名词性从句），则为强调句；eg.(1)It is the pen that we lost last week.(2)It was Mr Zhang that/who taught us English last school year.(3)It is what you are doing not where you come from or whether you are rich or poor that matters.(划线处为并列的主语从句）(4)It was what we had been doing these days that we were talking about last night.(划线处为宾语从句）此方法也有例外情况，eg. It is my mother's worry that my sister is often late for school.此句为it作形式主语的句型,我们要注意具体问题具体分析，请参见判定方法（二）例（4）。
(3)若为副词性成分（包括时间副词，地点副词和副词性从句即状语从句）或介词（短语），则为强调句。
eg. (1)It was here that we found the missing necklace（地点.副词）（2)It is now that we must get down to the work.(时间副词）（3）It is not until we have finished three years of study that we will have to leave the school.(时间状语从句）（4）It was because I stayed up too late last night that I was late again this morning.(原因状语从句）(5)Was it in this mountain village that Chairman Mao was born?(介词短语）若为从句则多数为强调句型，这儿所说的从句指名词性从句和各类状语从句，这一点在前面已有描述，这里再看几个强调状语从句和名词性从句的句子。
eg. (1)It is where I used to work that I am taking a photo.(地点状语从句）(2)It was because she was injured in the accident that she didn't come to the party yesterday.（原因状语从句）(3)It was after she got what she had desired long that she realized it wasn't so important.（时间状语从句，got后又有宾语从句）(4)It was so that she could amuse her little brother that Ann did all kinds of funny things that afternoon.（目的状语从句）(5)It is how you do it not what you do that is more important.（主语从句）(6)It is where Tom spent the night last night that I want to know most now.（宾语从句）二强调句型与相关句型的比较纵观强调句型的判定，当被强调部分后引导词是that时最容易和相似句型混淆，故在此我们多着墨于It is/was +被强调部分+句子其他成分与相关句型的比较，比较中有关观点均已在前文中描述，故在此比较时，笔者行文从简，点到则止，相关观点可以参见上文强调句型的三种判定方法的详细描述。
（一）强调句型与定语从句的比较请看下列例句:(1)It was in the park that the couple made a date for the first time.(2)It was the park where the couple made a date for the first time.(3)It was over there /here that Tom was painting.(4)It was the night when the car accident happened.(5)It was in the night that the car accident happened.句（1),(3),(5)是强调句，强调的分别是地点状语in the park,over there/here和时间状语in the night,原句可还原为：(6) The couple made a date for the first time in the park. (7)Tom was painting over there/here. (8)The car accident happened in the night.句(2),(4)分别为含有where和when引导的定语从句的复合句,注意句（2），(4)中park,night前的the不能去掉。
从以上例句可以看出，It is/was +地点状语或时间状语（含状语从句）+that +其它……为强调句；It is/was+the +地点或时间名词后接由where/when/that/which等引导的定语从句。
，全句为复合句。
再如：(9)It is the city that/which/__I will pay a visit to next month.(10)It is the holiday when/during which we often have fun relaxing on the beach.注意：句（9）中引导词是that 时,我们可看成强调句即(11)It is the city that I will pay a visit to next month.(强调介词宾语the city,我们下月要参观的就是这个城市）)(二）强调句型与主语从句，表语从句的比较请看下列例句：（1)It is the Great Wall that they are going to visit.(2)It is Mr Wang that/who has been to USA several times in our office.(3)It is true that they are going to the Great Wall next month.(4)It is my advice that they should be sent to USA to study English.(5)It is why I have come to see you.句(!),(2)为强调句，分别强调句子的宾语和主语，原句可还原为：（6）They are going to visit the Great Wall.(7)Mr Wang has been to USA several times in our office.句(3),(4)为含有主语从句的复合句；句（5）为含有表语从句的复合句，它与强调句型相差甚远，不难辨别。
