语法基础it的用法
it的用法
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。
高中英语 语法代词 it的用法课件(共32张ppt)
2) It was not until __C__ that ____ to prepare his lessons. A. did his father come in, the boy began B. did his father come in, did the boy begin C. his father came in, did the boy begin D. his father came in, the boy began
3) I hope that it will be fine Weather tomorrow.
4) It’s spring now.
Season
5) It’s quiet here. Circumstance
2. 用作人称代词, 代表前面提到的人 或事。
1) Who’s it? _It_’_s me. 2) Look at the picture. _I_t is a picture
Exercises
1) It was not _C__ she took off her dark
glasses ___ I realized she was a
famous film star.
A. when, that B. until, when
C. until, that
D. when, then
3. I don’t think __D_ possible to master a foreign language without much memo ry work. A. this B. that C. its D. it
4. Was it during the Second World War _A__ he died? A. that B. while C. in which D. then
英语语法：高中英语It的用法
【导语】"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，⽆忧考整理了“it的⽤法”，欢迎阅读参考！更多相关讯息请关注⽆忧考！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 one'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/concern/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.
英语语法详解：代词it的用法总结
英语语法详解：代词it的用法总结it是最常见的代词之一，用法很广泛。
虽然考察it的题型有很多，如阅读理解、完形填空、语法填空、短文改错等，但大多不属于难点。
因此，学习代词it的用法是一件相对轻松的事情。
相信每个人在英语学习初期，会发现在很多不同的语境下都会使用代词it，足以说明其用法的广泛性。
代词it看似简单，但并不代表每个人都能了解它的全部用法，尤其是在高考考点会涉及到的用法。
下面，就简要总结代词it的常见用法。
it的用法一：it用作代词（1）it用作人称代词it用作人称代词，一般指未知或不明身份的人。
例句：Who is it in the room? Open the door!谁在房间里啊？把门打开！（2）it用作指示代词作指示代词时，it的用法相当于this或that。
有时候it并不特指某件具体的事物，而是代表前面提到的、或者即将提到的某件事情。
例1：She said it was a very popular film，but I don't like it.她说那是一部非常流行的电影，但我却不喜欢（它）。
例2：She does not really treat me as a family member，and it has hurts me badly.她并没有把我当家人看待。
这就让我很受伤。
（3）it作非人称代词代词it还可以用来指代时间、距离、价值、天气、温度、环境等无生命的抽象事物，无阴阳之分。
例1：—What time is it by your watch?你的表到几点了？—It is 9:39 9点39。
例2：It is really quiet in the woods.小树林里真安静。
It的用法二：it用作形式主语或形式宾语（1）it作形式主语当句子的主语是动词不定式、动名词或名词性从句时，为了避免头重脚轻的句式结构，我们往往把主语部分放在谓语的后面，而用it作为形式主语放在句子的开头处。
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。
语法专项复习 it的用法
语法专项复习：IT的用法一、人称代词1. it指刚提到的事物本身, 以避免重复:例如: They watched the train until it disappeared in the distance.one用来替代前面出现的单数名词，泛指，相当于a/an+单数名词。
ones用来替代前面出现的复数名词，泛指。
the one 用来替代前面出现的特指的单数名词；the ones 用来替代前面出现的特指的复数名词；that与所指名词为同类，但不是同一个；用来替代前面出现的特指的单数可数名词或特指的不可数名词。
it 表示特指，与所指名词为同一个。
用来替代前面出现的单数名词2. 指动物或婴儿(未知性别的婴儿或孩子);或不重要的人, 常见于敲门或打电话:例如: 1) Is this your dog？No, it isn’t.2) They got a baby and it was a ten-pounder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 A to B.⑸.指价值: It is three dollars.⑹.指温度: Today it is 30 degrees centigrade.2. 作形式主语: 当句子的主语为不定式、动名词(doing)或主语从句时，为保持句子的平衡，常把真正的主语移到句末；用it作形式主语放在句首，it无具体的意义。
“It”作形式主语的句型：1) It is/was +名词( no wonder, an honor, a good thing, a pity, no surprise…)＋主从例句：It is a pity that we can’t go.2) It is/was ＋形容词(obvious, natural, surprising, wonderful, possible, likely, certain…)＋主语从句例句：It is clear that Tom has returned.3) It is/was＋过去分词(said / reported / believed / known / thought / expected / decided / announced / arranged…)＋主语从句例句：It is said that President Jiang will visit our school next week.4) It＋动词(happens /occurs / seems…) ＋主语从句例句：It occurred to him that he failed in the examination.5) It doesn’t matter how/whether…例句：It doesn’t matter whether he is wrong or not.6) It is time ( about time, high time ) + that从句(虚拟语气:动词用过去时did)例句：It is time that children went to bed.7) It is the first ( second ... ) time + that从句(从句用现在完成时have done )It was …(从句用过去完成时had done )例句：It is the first time I have been here. = This is the first time I have been here8) It is difficult/easy… for sb. to do sth.It is typical/nice/kind… of sb. to do sth.例句：It is kind of you to say so. = You are kind to say so.It is important for her to come to the party.9) It is no use/useless/no good/ a waste of time doing sth.例句：It is no good learning English without speaking English.It’s useless trying to argue with Shylock.10) It takes sb. some time/ some money to do sth.: 做．．．要花费某人．．．例句：It took thousands of people many years to build the Great Wall.11) 其它常见句型:1. It is + 时间段+ since sb. did sth.: 自…以来已经有多久了例句：It is six years since you began to learn English.2. It will be + 时间段+ before sb. do sth. 要过…时间，才……3. It was long before sb. did sth.. 过了很久才……4. It wasn’t long before sb. did sth. 没过多久就……5. It will be long before sb. do sth. 要过很久才……6. It won’t be long before sb. do sth. 过不了多久就……7. It is up to you whether to go. 是否去由你决定。
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Talk about the following pictures, using
It is no use/good doing sth 做……没有用/不好 It is fun doing sth 做……很有趣
还想跑？ 甭想！
想追我?
没门！
Proverbs(谚语) with “It”
① It is never too old to learn. 活到老, 学到老。
② It is easier to fall than to rise. 摔倒容易爬起来难。
③ It is no use crying over spilt (溢出的) milk. 覆水难收。
④ It never rains but it pours(泼水). 不鸣则已, 一鸣惊人。
一、 用作人称代词, 代表前面提到的人或事物 1) Who’s it? ___It_’_s___ me. 2) Look at the picture. __I_t __ is a picture of our school.
二、用于代替指示代词this 和that。 ---Is this jacket yours? ---Yes, __i_t___ is.
Read and analyze the sentences.
It is obvious that the water was to blame. It is true that he will treat me for breakfast tomorrow. It is certain that our class will do a good job in the final exam. Is it possible that he will become the chairman of our country? It is amazing that at my age I still look like a student! 分析: it是 __形__式__主__语__, 句子真正的主语是 _t_h_a_t_引__导__的__主__语__从__句__。
四、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 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 It is illegal (for a teenager) to drive a car without a license.
⑤ It is easy to open a shop but hard to keep it always open. 创业容易守业难。
⑥ It takes three generations (代) to make a gentleman. 十年树木, 百年树人。
Read and analyze the sentences.
三、用以表示时间、距离、天气、气候、 季节、环境等
1) It is half past eight now. Time 2) It’s only half an hour’s walk from here
to our school. Distance 3) I hope that it will be fine tomorrow. Weather 4) It has rained much this year. Weather 5) It’s spring now. Season 6) It’s quiet here. Circumstance
It is Friday today. date It was very cold last Monday. weather It is about 8:30 now. time It is about 25km from Longxian to Bazi. distance It lies in the south of Shaoguan city. place It is 40°C ! You got a high fever! temperature Conclusion: it 可以用作非人称代词, 表示_日__期__, _天__气__, __时__间__, _距__离___, _地__点___, _温__度___等。
牢记以下常用于该句型的形容词
It is clear/obvious/true/possible/certain/ amazing/ridiculous等+ that从句.
思考: 为什么要用it做形式主语而把真正 主语放到后面去?
遵循英语语言的尾重原则, 避免句子 头重脚轻。
The use of “it”
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, careful careless, silly, foolish, stupid, clever, wise, crazy. 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 while doing/ to do It’s no use crying over spilt milk.
2. it作形式主语替代主语从句 ①It is adj. + clause 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……)”, 是主语从句最常见的一种结构。 e.g. It is very clear that he’s round and tall like a tree.