A. it在英语中的用法
“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，因此在复习中应给予足够的重视。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.
（2）It be adj. of sb. to do sth.
（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
2. It替代作主语的从句常见句型
（1）It is + noun +从句
（2）.It is adj. +clause
It’s surprising that… (should)………竟然……
It’s a pity/shame that…(should)………竟然…
（3）It verb sb. + clause= It is v-ing + clause
It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze/bother/concern/frighten/please/anger sb. that…
（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)
（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）
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。
It 作形式宾语的常见句型：
1. verb+ it+ adj./noun (for/of) to do/clause (verb=think, believe, suppose, consider, feel, make, keep…)
五、强调句型
It is/was+被强调部分+ that(who)… 强调句型用来强调谓语动词以外的任何句子成分。当被强调部分是人时也可以用who。
在使用强调句型时需注意以下几点：
1. 请注意强调句型的特殊疑问句
2. 在强调原因状语从句时，只能强调由because所引导的从句。
3. 在强调not … until结构时必须把not与until一起放到被强调的位置上。
4. 注意强调句型与定语从句的区别。
六、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 。
更详细的请看：）~~
http://www.kaoshi100.cn/show.asp?id=227&name=%D3%A2%D3%EF%B0%E6
B. it有什么用法
it
it
[It; it]
代名词
1 [第三人称单数中性主格] 它,它
2 [第三人称单数中性受格]
a. [直接受词] 它,它
I saw ~.
我看到它
I gave it him.
我把它给了他
b. [间接受词] 它,它
I gave it food.
我给它食物
c. [介系词受词]
I gave food to it.
我给它食物
3
Go and see who it is.
去看看是谁
It's me. (
口语)是我
It says, "Keep to the left.".
它 [标示] 写着“靠左边走”
It says in the Bible that.
?. 圣经上说…
It says in the papers that.
?. 报纸上说…
4 a.
It is impossible to master English in a month or two.
要在一两个月内精通英文是不可能的
It will be difficult for him to come so early.
要他来得那么早是有困难的
It's kind of you to give me a present.
你真好,送我礼物
It is no use trying.
试也白试
It isn't certain whether we shall succeed.
我们是否会成功还很难说
It is strange that he says so.
他这样说真奇怪
It is said that the universe is infinite.
据说宇宙是无限的
b. [作形式上的受词,以代表后述实际主词的不定词片语、动名词片语、that 子句等]
I make it a point to get up early.
我强调要早起
They considered it impossible for us to attack ring the night.
他们认为我们不可能在夜间攻击
You will find it very nice taking a walk early in the morning.
你会发现在清晨散步很好
I think it necessary that you (should) do it at once.
我认为你必须立刻做那件事
I take it (that) you wish to marry her.
我以为你想和她结婚
c.
It is a nuisance, this delay.
这样拖延真受不了
5 [作非人称动词 (impersonal verb) 的主词]
a. [天气、气候的冷暖]
It is raining.
正在下雨
It is getting hot.
天气渐渐变热
It looks like snow.
好像要下雪的样子
b. [时间、日期]
It will soon be New Year.
快要新年了
It is Friday (today).
今天是星期五
How long does it take from here to the park ?.
从这里到公园要多久?
It takes time to get used to new shoes.
穿惯新鞋需要时间
c. [距离]
It is 2 miles to the station.
到车站 (距离) 有两哩
d. [明暗]
How dark it is !.
好暗啊, [事情、情况] !
How goes it with you today?.
你今天觉得怎样?
Had it not been for you, what would I have done ?.
要不是有你 (的帮助) ,我真不知该怎么办呢 ?
f. 作 seem [appear,happen,etc.] that? 的主词
It seems (that) he has failed.
看来他已经失败了
It happened (that) he was not present.
碰巧他没有出席
6(口语)
a. [作某种动词无意义的形式上受词]
Let's walk it.
我们走路去
Damn it (all)!.
该死!糟了!
You'll catch it from your father.
你会挨你父亲的骂
Give it (to) him!.
教训他一顿!
→ Go it.
b.
If we miss the bus, we'll have to foot it.
如果我们赶不上公共汽车,我们只好走路
cab it (
美)坐计程车去
lord it
→lord v.t.
king it
→ king v.t.
queen it
→queen v.t. 2.
c. [作介系词的无意义、形式上之受词]
I had a good time of it.
我玩得很愉快
Let's make a night of it.
让我们痛饮一晚吧
7 [在 "it is[was]? that [who,whom,which,etc.] "的句型中用以强调句子主词, (动词或介系词的) 受词,副词片语]
It is I that [who] am to blame.
该受责备的是我
It is the price that frightens him.
使他吓一跳的是那价钱
It was Franklin who wrote "God helps them that help themselves.".
写“天助自助者”这句话的人是富兰克林
It was Mary (that) we saw.
我们看到的是玛丽
It was peace that they fought for.
他们作战为的是和平
It was in this year that the war broke out.
战争就是在这一年爆发的
It was beer (that) you drank, not water. = It was beer, not water, (that) you drank.
你喝的是啤酒,不是水
have had it →have v
have what it takes →what pron
If it had not been for →if
If it were not for → if
it
[It; it]
《Italian vermouth 之略》
不可数名词
(英口语)! (甜味的) 义大利的苦艾酒
gin and it
杜松子酒与甜苦艾酒的混合酒
it
[It; it]
《it 的转借》
不可数名词
1 ! (捉迷藏等游戏的) 鬼
2 (口语)
a. 极致,理想 (the ideal)
In that blue dress she was ~.
她穿上那件蓝色衣服美极了
As a Christmas gift, this is really it.
当作耶诞礼物,这是最理想的东西
b. 重要人物,第一号人物,头号人物
Among physicists he is it.
在物理学家中他是佼佼者
3 (俚)性的魅力,性感 (sex appeal)
That's it
(1) (问题) 就在那里
(2)就像那样,那样就可以
That's it for today.
今天到此为止 (就此结束)
(3)那样就结束,那就是全部
This is it
(口语)终于到了时候 [紧要关头] ; 果然不出所料
with it
(1)不落伍的,时髦的,现代化的
(2)领悟力强的; 精明的,机警的; 知内情的
get with it
赶上时代,顺应新潮流; 警觉,留神
C. it在英语语法中有几种用法
一、it强调句型的构成：
It+be+被强调部分+that(强调部分指人做主语时时用who，指人做宾语时用whom)+句子的其他部分。
例如：
Mary
met
an
old
beggar
in
the
street
yesterday.
It
was
Mary
who/that
met
an
old
beggar
in
the
street
yesterday.
(强调主语)
It
was
an
old
beggar
whom/that
Mary
met
in
the
street
yesterday.(强调宾语)
It
was
yesterday
that
Mary
met
an
old
beggar
in
the
street.(强调时间状语)
It
was
in
the
street
that
Mary
met
an
old
beggar
yesterday.(强调地点状语)
注意：it强调句型不能强调句子的谓语。
D. it,的用法
“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，因此在复习中应给予足够的重视。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.
（2）It be adj. of sb. to do sth.
（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
2. It替代作主语的从句常见句型
（1）It is + noun +从句
（2）.It is adj. +clause
It’s surprising that… (should)………竟然……
It’s a pity/shame that…(should)………竟然…
（3）It verb sb. + clause= It is v-ing + clause
It+surprise/delight/interest/disappoint/worry/disturb/annoy/amaze/bother/concern/frighten/please/anger sb. that…
（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)
（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）
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。
It 作形式宾语的常见句型：
1. verb+ it+ adj./noun (for/of) to do/clause (verb=think, believe, suppose, consider, feel, make, keep…)
五、强调句型
It is/was+被强调部分+ that(who)… 强调句型用来强调谓语动词以外的任何句子成分。当被强调部分是人时也可以用who。
在使用强调句型时需注意以下几点：
1. 请注意强调句型的特殊疑问句
2. 在强调原因状语从句时，只能强调由because所引导的从句。
3. 在强调not … until结构时必须把not与until一起放到被强调的位置上。
4. 注意强调句型与定语从句的区别。
六、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 。
更详细的请看：）~~
http://www.kaoshi100.cn/show.asp?id=227&name=%D3%A2%D3%EF%B0%E6
E. it的基本用法
1、it的基本用法
（1）用作人称代词，代替前文提到过的事物。
The train has arrived. It arrived half an hour ago.
（2）用以代替提示代词this, that。
—What’s this? —It’s a knife.
—Whose watch is that? —It’s mine.
（3）起指示代词的作用，指一个人或事物。
—Who is knocking at the door? —It’s me.
（4）指环境情况等。
It was very noisy (quiet) at the very moment.
（5）指时间、季节等。
—What time is it? —It’s eight o’clock.
It often rains in summer here.
（6）指距离。
It is a long way to the school.
（7）作形式主语。
It is not easy to finish the work in two days.
It is no use crying over spilt milk.
It is as pity that you didn’t read the book.
（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.
It was I who met Xiaoming in the street last night.
2、含有“It is …”的句型
（1）It is time (for sb.) to do sth.
It is (high) time that sb. did sth.(虚拟语气)
（2）It is + 形容词（+of / for sb.）+ to do sth.
通常用
of的词有brave、clever、careful、hopeless、kind、good、naughty、nice、silly、stupid、foolish、wise等。
（3）It is + 形容词 + that + sb. + (should) do sth.（虚拟语气）
能用于这个句型的形容词有strange、wonderful、natural、good、proper、right、wrong、well、fortunate、important、necessary、useless、likely、probable、impossible等。有时可省去should而直接用动词原形。如：
It is important that we should pay close attention to grain.
It is natural that he（should）say so.
（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）
（6）It is said/reported/announced/ (well) known … that…
（7）It is/was + 时间 + since … 从……已多久了。
It is three years since I met him in Beijing.
It was a long time since I (had) lived in that small mountain
village with these farmers.（注意两句中的时态）
It is five months since I arrived in New York.我到纽约已经五个月了。
It is five months since I was in New York.我离开纽约已经五个月了。
（注意：终止性动词表示从动作发生时算起；如果是状态动词或持续性动词，则从动作或状态结束时算起。）
（8）It is + 时间 + before …
这个句型和上面句型中时间都是时间段，如long、years、months、weeks、five days、three
hours、twenty minutes等。不过主句的时态多用一般将来时或一般过去时。
It will be several years before we meet again.
我们要过好几年才能再见面。
It was not long before they set out for the front.
不久他们就出发去了前线。
（9）It is /was/will be the first/second/third … time that …
It is the first time that I have been here.
It was the second time that he had seen the film.
（10）It is up to sb. to do sth … 应由某人做某事。
It is up to you to decide whether we start or not.
F. it的用法，语法的语法语法
It 的 用 法 1. 要点提示 it可以用作人称代词，它还可以指时间、天气、距离、上下文等，另外，it还可以作先行词，作形式主语和形式宾语。 2. 用法指南 (1)作为人称代词，it可以用来指东西、动物、婴儿和未确定身份的人。 Where's my book? Have you seen it? 我的书在哪里？你看见了没有？ The dog is in the garden, isn't it?狗在花园里，是吧？ The baby cried because it is hungry.婴儿哭了，因为他/她饿了。 (Someone is ringing.)Who's it? It's me. (有人在按门铃。)谁呀？是我。 (2)it 可以指上下文内容 The Olympic Game will be held in Beijing in 2008. It makes the Chinese proud. 2008年将在北京举行奥运会。这使得中国人非常自豪。 (3)it表示时间、天气、距离等。 What time is it now? It's half past nine.现在几点了？九点半 It is cold.天气冷。 It's about ten kilometers from the park to the museum. 公园到博物馆大约是十公里。 (4)it用作形式主语或形式宾语 It's very important for us to learn English well.(实际主语是to learn English well) 对我们来说，学好英语很重要。 I found it hard to fly a kite. (实际主语是to fly a kite)我发现放风筝很难。 it 代词 pron. 1. (指已提及或心目中的人或事物)这,那,它 This is our new car. I bought it yesterday. 这是我们的新车。我昨天买的。 2. (指无生命物、动植物、性别不详的幼孩等)它 What a beautiful baby -- is it a boy? 多漂亮的孩子啊--它是男孩吗? 3. (作无人称动词的主语,表示时间、气候、距离等) It's about 50 kilometers from here to my ranch. 从这儿到我的牧场约有五十公里。 It's early yet. 还早呢。 It's very hot. 天真热。 4. (置于句首或句中,引导后面的短语或从句) I'd think it well worth while to go. 我觉得很值得一去。 5. (作为形式上的主语或宾语,用于表示强调的句型中) But here it's my word that counts. 但这里是我说的话算数。 6. (用于某些动词、介词后面,词义含糊,构成习惯语) Don't lord it over your friends. 不要对你的朋友摆威风。