高考英语It的用法
高考英语语法总复习7it的用法课件
A. it
B. her
it作形式宾语
C. that
D. this
★it知识点补充★
it变化成形物代形式 注意区分its和it’s
it→its(它的)
it’s=it is
it和现三单 It sounds good.
it
it变化成反身代词 it→itself(它自己)
it变化成复数形式 it→they(他们 主格) it→them(他们 宾格)
注意: 某些动词(短语)后接从句时要用it作形式宾语，再接从句，构成“动词(短语)+it+that/if/when/...从句”，如： ①I hate/like it when... 我讨厌/喜欢... ②You should see to it that... 你应该确保... ③You can depend on it that... 你可以相信... ④I can’t help it if... 如果...我也没有办法 ⑤I would appreciate it if... 如果...我将感激不尽
★常用it作形式主语的句式★
(5)用于It is/was...that/who... 强调句中 1.It was they that/who cleaned the classroom yesterday.
昨天是他们打扫的教室。
2.They cleaned the classroom yesterday.
were using ___it___ every day.
此处作using的宾语，根 据语境可知，所填词指 代上文的railway，故填
it
(4)作形式主语或形式宾语，代替动名词、不定式或从句
2.I find it difficult to work with him.
高考重点：It的用法以及含有it的句型
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。
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。
I.wa.the.tha.(who.cleane.th.classroo.yesterday.I.wa.i.th.stree.tha..me.he.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.no....unti....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...didn’.realiz.sh.wa..famou.fil.sta.unti.sh.too.of.he.dar.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.I.i.importan..necessary.right.strange.natural....tha....由于主句中的形容词不同, tha.后的从句中要用虚拟语气（shoul..动词原形）, shoul.可以省去。
高考语法it用法详解
一. it作人称代词在特定的环境中，it可指人，如指婴儿、性别不详或身份不明的人。
e.g.1. The baby stopped crying as soon as it saw the woman.（指婴儿）2. —Who is it?—It’s me.（性别不详或身份不明）二. it作形式主语或形式宾语it可以作形式主语或形式宾语而把真正的主语或宾语后置。
1. 用it作形式主语的情况：(1) It＋系动词＋形容词＋that从句It is necessary/important/surprising/strange＋that从句，从句中谓语动词常用“should＋动词原形”形式，且should可省略。
(2) It＋系动词＋名词＋that从句It is a pity/a shame/good news/a fact/an honour/a wonder/no wonder/our duty＋that从句。
e.g. It’s no wonder that you’ve achieved so much success.难怪你取得了如此大的成功。
(3) It＋不及物动词＋that从句It seems/happened/turned out /occurs/appears＋that从句。
e.g. It happened that he was out when I called on him.当我去拜访他的时候，碰巧他出去了。
(4) It＋系动词＋过去分词＋that从句It is said /reported/ announced/ believed/ thought/ well known/ hoped/ pointed out/ found out/ suggested/ ordered/ advised/ requested/ insisted/ required/ demanded＋that从句。
高考英语二轮复习：it的用法课件(共40张PPT)
二、it 作形式主语
⒊ it代替主语从句：这个主语从句可以用连词that引导，也可以用连接 代词或连接副词引导。
①It 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 t真正的主语移到句子 后部去，使句子显得平衡，避免“头重脚轻”。it作形式主语时，可以代 替三种形式：不定式、动名词和主语从句。
二、it 作形式主语
1. it代替不定式短语，常用于下列句型中： It + be +adj + (for/of sb.) to do sth. It + be + n + to do sth. It takes sb. some time to do sth. It’s up to sb. to do sth.
二、it 作形式主语
b) It doesn’t matter（It’s no wonder；It doesn’t make too much difference等）＋连接代词或连接副词引导的从句。 ➢ It doesn’t matter whether we go together or separately. ➢ It is no wonder why he came here too late.
高考英语it用法
高考英语it用法在高考英语中，“it”的用法是一个重要且常考的知识点。
掌握“it”的各种用法，对于提高英语成绩和语言理解能力有着至关重要的作用。
首先，“it”可以用作人称代词，指代前文提到过的事物或情况。
比如：“I bought a book yesterday It is very interesting”在这个句子中，“it”指代的就是前面提到的“book”。
“it”还常被用作非人称代词，表示天气、时间、距离、温度等。
例如，“It's sunny today”（天气）“It's five o'clock”（时间）“It's a long way from here to the station”（距离）“It's very cold”（温度）在强调句中，“it”的作用也十分突出。
强调句的基本结构是：“Itis/was ＋被强调部分＋ that/who ＋句子其他部分”。
通过这种结构，可以强调句子中的主语、宾语、状语等成分。
比如：“It was Tom who broke the window”强调的是主语“Tom”；“It was yesterday that I met him”强调的是时间状语“yesterday”。
“it”作形式主语也是高考中的常见考点。
当句子的主语过长，为了避免头重脚轻，通常会用“it”作形式主语，而把真正的主语后置。
常见的句型有：“It is ＋ adj ＋（for/of sb）to do sth”，例如：“It is important for us to learn English well” 还有“It takes sb some time to do sth”，像“It took me two hours to finish my homework”“it”作形式宾语的情况也不少见。
常见的结构为“find/think/consider/make ＋ it ＋ adj／n ＋to do/doing/that”，例如：“I find it difficult to learn math” 这里“it”代替了后面的“to learn math”，使句子结构更加平衡。
高考英语中的it的用法、常用句型
It pleases me that he should want to talk with me. It so happened that he had just left for Tianjin. ★ “It +动词的被动语态+主语从句”。常用于 本句型的动词主要有accept, admit, allow, announce等。如： It’s accepted that the universe is endless. It is generally admitted that he is a trustworthy person. It was announced that all prisoners would be set free.
2）动词+介词+ it + that从句 能用于此句型的主要有：depend on, answer for, see to。如： You may depend on it that he will turn up in time.
I can’t answer for it that the boy is honest.
★ “It + be +名词+主语从句”中从句谓语常用 “（should +）动词原形”。常用于本句型的主 要有a pity, a shame, no wonder, no accident等。 如：
It is a great pity that he should be so greedy.
It is a shame that he should attempt to injure the
高考英语考点 15 It的用法
考点十五It的用法it作为代词用法非常灵活，可用于代替上文中提到的事物，代替上文中说到的一件事，代替不知情的人（尤其是不知身份、性别和姓名的人）。
也可用于表示时间、天气、距离、计算结果等。
还可用来代替不定式、动名词、从句等，充当形式主语或形式宾语。
一、用于指人以外的一切生物、无生命的东西和事情一般指说话者心目中已经了解或所指的生物、无生命的东西或事情，没有性别的区分；可以是可数名词，也可以是不可数名词，在句子中既可以作主语，也可以作宾语。
1. 指动物和植物。
☞ Look at that bird. It always comes to my window. 看看那只鸟。
它总是飞到我的窗前来。
2. 指代无生命的东西。
☞This is my watch. It’s made in Switzerland. 这是我的手表。
它是瑞士产的。
3. 代替上文提到过的整个事情。
☞Well, you mustn’t play on the road. It’s dangerous! 哦，你不能在马路上玩。
这是危险的！二、用于指代人1. 指代说话者心目中不太清楚的那个人，常在打电话或敲门时用。
☞—Who is knocking at the door? ——谁在敲门？—It’s me. ——是我。
2. 指说话者心目中的那个人。
☞—Look, someone is coming. Who can it be? ——看，有人过来了。
他可能是谁呢？—It may be the headmaster. ——可能是校长。
3. 在回答用指示代词表示人的特殊问句时，常用it指人。
☞—Who’s that? ——那人是谁？—Is it Helen? ——是海伦吗？—Yes, I think you’re right. It’s Helen. ——是的，我想你说对了，是海伦。
三、用于指时间、距离和自然现象等1. 表示时间。
☞—What’s the date? ——今天是几月几日？—It’s the third of March. ——今天是3月3日。
高中英语it的用法课件-(详细有高考题-精品)
动词 +it + that + clause
enjoy, like, / love, dislike, appreciate hate, don't mind, be fond of, feel like, see to / depend on / insist on
例 : I hate it you can dance so well but I can't.
2.非人称代词it
it有时并不指具体的东西，而泛指天气、时间、环境等， 称为非人称的it： ⑴.指天气：
It is a lovely day, isn’t it? It is a bit windy.
⑵.指时间:
It was nearly midnight when she came back.
⑶.指环境:
no good 3. S + V + it +
no use
+ doing sth.
形式宾语归纳
该句型中的it 作形式宾语，记忆方便---“6123结构”。
6 主句中常用的动词： think,believe,make,find,consider,feel； 1 形式宾语it； 2 宾补的两种形式：形容词或名词； 3 真正宾语的三种形式：
an honour
…
… said It is / was p.p. known + that-clause believed
…
1. 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。
高考英语It的用法
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。
高考英语语法之it的用法
2. I hope there are enough glasse for each guest to have ________.(NMET 1995) A.it B.those C.them D.one 解析:答案为D.本题考查替代词it和 one的区别.it用于替代同类的,特定的, 同一的事物;one替代同类的,泛指的 人或物.根据题意"我希望有足够的杯 子使每个客人有一个."可知应用one 泛指enough glasses中的一个.
4)It is no use/ good + doing sth. It is no use trying again = It is of no use to try again. (5)It is + 被强调部分 + that/who + … Was it in the street that you met her? Who was it that called him "comrade"? It was not until yesterday that I met my old friend. It is in a small factory that my brother is going to work.(注意上述各句均为强调句型的"考点") 比较:It is a small factory where my brother is going to work.(定语从句)
(8)作形式宾语. I think it no use arguing with him. I found it very interesting to study English. He made it clear that he was not interested in that subject. (9)用于强调结构. It was Xiaoming whom ( that )I met in the street last night. It was in the street that I met Xiaoming last night. It ws last night that I met Xiaoming in the street.
高考英语中it用法浅析
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。
“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。
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。
高考英语总复习 精典讲座it用法
高考精典讲座——it用法一、用作无人称代词，表示天气、距离、时间等。
(1) 自然现象（天气的冷、暖；气候变化等）It’s cold in Beijing in winter. 北京冬天很冷。
It’s windy today. 今天多云。
--What's the weather like today? 今天天气怎样？--It is fine. 很好。
(2) 季节、时间、星期、节日等。
It is summer now. 现在是夏天。
It is 8 o’clock by my watch. 我的表现在8点。
What day is it today? 今天是星期几（什么节日）？（3）距离、量度、价值等。
It’s twenty minutes’ walk from my home to school.从我家到学校要步行二十分钟。
--Is it far from your home to the station? 从你家到火车站远吗？--No, it’s quite near. 不远，很近。
--What is the cost? 多少钱？--It's three dollars. 三美元。
（4）环境情况等。
It is very noisy here .这里很吵。
It’ll be lovely in the park today.今天公园里一定好玩。
二、用作人称代词，代替前面提到的事。
The snake is not a warm-blooded animal. It’s a cold–blooded one. 蛇不是温血动物，它是冷血动物。
There is a book on the desk. It belongs to Mr. Cheng. 课桌上有一本书。
是程老师的。
--Where is the dictionary? 字典在哪儿？--It is on my desk. 在我的书桌上。
高考英语：it的用法
2）真实主语是主语从句。常见句型如下： a. It + be +名词+主语从句。如：
It is a great pity (that) he can't swim. It was no accident (that) such a book (should) appear in the 18th century. It was a puzzle whether he should get married. It was a mystery how the thieves got in.
from a store kman that Alice bought from a store last week. （强调宾语a walkman）
③It was from a store that Alice bought a Walkman last week. （强调地点状语from a store）
4. 强调句型用于特殊疑问句，被强调的通常 是疑问词。
注意：此强调句型不能强调谓语动词。若需 强调谓语动词，常用“助动词do / does / did + 动词原形”。
四、一些含it的固定句型 As someone puts it, ... 像某人所说的那样，…… Please see to it that ... 请务必…… When it comes to ... 当提到……时 It looks / seems as if ... 看起来好像…… It's time for sth. 该做某事了
高考英语_考点透析：it的用法
考点透析：it的用法一、概述在英语中，it的使用相当广泛，它既可用作代词，如人称代词（personal it）、指示代词（demonstrative it）及非人称代词（impersonal it）, 也可用作引导词（anticipatory it）和强调结构中的强调词（emphatic it）。
Someone is ringing the doorbell. Go and see who it is.有人在按门铃。
去看看是谁。
(人称代词)----What’s this? 这是什么？----It’ s a book. 这是一本书。
（指示代词）What a long way it is from Beijing to London! 从北京到伦敦真远。
（非人称代词）It' s best to plant trees in spring because it's warmer. 春天是植树的最佳时节，因为天气更暖和。
（作引导词）It was I who met him in the park last week. 是我上星期在公园遇到他的。
（强调结构中的强调词）二、it作代词1、用作人称代词（personal it）代替前文提到过的事物，it作真实主语或宾语。
The frog is not a warm-blooded animal. It is a cold-blooded one.青蛙不是温血动物，它是冷血动物。
My pen is missing. I can't find it anywhere. 我的笔丢了，我哪儿也找不到它了。
I won't be back tonight. Please tell my wife about it. 我今晚不回来了，请你向我妻子说一声。
I was disappointed with the film. I had expected it to be much better. 我对这部电影很失望，我曾盼望它更好。
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It的用法（专项总结及训练）一、人称代词1，it的最基本用法是作代词，主要指刚提到的事物，以避免重复:①They watched the train until it disappeared in the distance.2.，也可以指动物或婴儿(未知性别的婴儿或孩子):②Is this your dog？No, it isn’t.③They got a baby and it was a ten-pounder3.，也可指抽象事物或指抽象环境和情景:③I hate it when people talk with a full mouth.．二、.非人称代词1.it有时并不指具体的东西而泛指天气、时间、日期、距离、价值、度量、温度、环境等：⑴.指天气：It is a lovely day, isn’t it?⑵.指时间: It was nearly midnight when she came back.⑶.指日期:It is April First today.⑷.指距离:It is some 3000 kilometers from Beijing to Guangzhou.⑸.指价值:It is three dollars.⑹.指温度:Today it is 30 degrees centigrade.三、其他用法1.在句子的主语不太明确时充当主语，表示谁在做某事：①Who is it there? It's I (me/you/he.....).②I thought it was Mary, but it was not she.③Her face lighted when she saw who it was.2.泛泛的指某件事：(有时泛指一般情况)①It doesn’t matter.②It is a shame, isn’t it?③How is it going?(情况怎样)④It says in the newspaper that......3.指最好的或最渴望得到事物①He thinks he’s it. 他一直以为自己是最佳人选。
②That steak was really it! 那牛排真是不错！③We’ve been looking for a house for months and I think this is it. 我们找房子已经找了好几个月了, 我看这所就是我们要找的。
4.it用在一些词组中，it 没有特别的意思The last train's gone. Come on, we'll foot it.(来，咱们步行吧。
)四、作形式主语，替代主语从句，动词不定式，或动名词短语：1.作形式主语替代主语从句⑴It is clear ( obvious，true，possible，certain....) that 从句常译为＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂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.⑵It is important ( necessary，right，strange，natural...) that 从句常译为┅是重要的(必要的,对的,奇怪的,自然的┅).that 后的从句中要用虚拟语气（should + 动词原形），should 可以省去，建议记住该句型中的形容词。
①It is important that we (should) learn English well.②It is necessary that he (should) remember these words.⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that 从句常译为＂据说（据报道，据悉．．．）＂。
①It is said that he has come to Beijing.②It is reported that another earth satellite has been put into orbit.⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that 从句.that 后的从句要用虚拟语气（should + 动词原形），should 可以省；常译为＂据建议；有命令．．．）①It is suggested that the meeting ( should ) be put off.②It was ordered that we ( should ) arrive there in two hours.⑸It is time ( about time ，high time ) that从句(虚拟语气:动词用过去时did)①It is time that children went to bed.②It is time you bought a new car.③It is (high ) time you made up your mind.⑹It is the first ( second ... ) time that从句(从句用现在完成时have done )It was the first ( second ... ) time that从句(从句用过去完成时had done )常译为＂是第一（二）．．．次．．．＂。
It is the first time I have been here. = This is the first time I have been here⑺It is a pity ( a shame /an honor/a good thing/a fact,/a surprise/... ) that从句.that后的从句一般用虚拟语气（should + 动词原形），should可省去．表示出乎意料，常译为＂竟然＂。
没有这种意义时，则不用虚拟语气。
①It is a pity that such a thing ( should ) happen in your class. 这种事竟然发生在你们班上，真是遗憾！②It is a pity that he is ill. 他生病了，真遗憾！⑻It happens (seems，looks，appears ) that从句.常译为“ 碰巧…,似乎是…,看起来…”①It happened ( so happened ) that he met his teacher in the street. 碰巧．．.②It seems that he will be back in a few days. 看来．．．⑼用于it follows that…句式。
如：He is wrong, but it does not follow that you are right. 他错了，但并不能由此推断你是对的。
She’s not in the office but it doesn’t necessarily follow that she’s ill. 她不在办公室, 并不见得就是病了。
（10）It struck sb that…是英语中一个很有用的句式，其意为“某人突然感到（觉得）……”。
句首的it 可视为形式主语。
如：It struck me that she had come to borrow money. 我忽然想起她是来借钱的。
It struck her that she ought to make a new plan. 她突然想起她应当拟一个新计划。
It struck me that nobody was in favor of the change. 我突然感到没有人赞成这种改变。
有时也和一般现在时。
如：It strikes me Jim is a nice lad. 我觉得吉姆是一个好小伙子。
类似的还有：It occurred to him that…。
如：It suddenly occurred to him that this was an act he could never do. 他突然想到这是他绝不能做的一件事。
注意，有时用于否定句。
如：It never occurred to her to ask anyone. 她从未想到问问他人。
⑾用作动词look, seem, appear, happen, occur, follow等的主语(后接that从句或as if 从句)。
如：It seems that he knows everything. 他好像什么都知道。
It (so) happened that I had no money with me. 碰巧我没带钱。
It appears that we may be mistaken. 看来我们可能弄错了。
但是，英语一般不说it looks that…，可改用it looks as if…。
如：It looks as if we’ll be late. 我们似乎要迟到了。
用于it happens (occurs) that…句式。
如：It happened that I was standing next to him when he collapsed. 他倒下的时候我恰巧站在他旁边。
It didn’t occur to him that she would refuse his invitation. 他没有想到她会拒绝他的邀请。
类似的结构还有：it chanced that…。
如：It chanced that the man was a doctor. 那男人碰巧是位医生。
It chanced that she was in when he called. 他打电话时碰巧她在家。
It happened / chanced that she spoke fluent Swahili. 偏巧她很会说斯瓦希里语。
为加强语气，so 常与happen / chance 连用。
如：It so happened / chanced that I’d met her a few years before. 碰巧我几年前见过她。
2.作形式主语替代不定式.⑴It is kind ( of sb. ) to do sth. 不定式的逻辑主语是由of引起，主句中的形容词必须是能表示逻辑主语特征的褒义或贬义形容词。