It的特殊用法
It的用法
“It” 的用法1.“it”作代词。
“it”可替代物、动物、抽象事物，还可以代天气、时间、距离、环境、温度等。
也可指代上下文提到的事物或某种情况，以及不明身份、性别的人和小婴儿，也可用于电话用语中替代this或that。
E.g. ① It's fine today.(weather)② It's hot today. (temperature)③ It's four o'clock now. (time)④ It's only 200 metres from my home to our school.(distance)⑤ It's noisy outside.(circumstance)⑥ --Who is knocking at the door?--It must be John.(an unknown person)⑦ --Who is it speaking?--It's Mary.(making a phone call)2.“it”作形式主语。
（1）It be +adj. +(for sb.)+ to do sth.此处的adj.为描述事物的形容词。
如：easy, hard, difficult, necessary, possible, impossible, likely, right, wrong, important, etc.E.g. ① It's easy for us to climb the hill.② It's difficult for me to work out the maths problem.(2) It be +adj.+(of sb.)+to do sth.此处的adj.为描述人的形容词。
如：kind, nice, rude, cruel, careful, careless, silly, foolish, stupid, wise, crazy, etc.E.g. ① It's kind of you to help me with this problem.② It's foolish of you to believe in such a person.③ It's wise of you to choose to study abroad.(3). It be + adj.+ doing sth.It's no good/use doing sth.It's (well) worth doing.E.g. ① It's no good arguing with him.② It's no use crying over spilt milk.③ It's no good drinking too much wine.(4) It be +adj./n. +Clause.It's a pity that…It's a fact that…(It's) no wonder that…It's obvious that…It's certain that…It's strange/important/necessary that…(要用虚拟语气）(用should+动词原形)It worries/surprises sb. that…It seems/appears that…It turned out that…It (suddenly) occurred to sb. that…It strikes/struck sb. that…It's said/reported/believed… that…It doesn't matter whether…It makes no di fference whether…(5)其它句型。
不定代词it的用法
不定代词it的用法一、不定代词it的基本用法在英语中，不定代词it充当性别不明、指代某个特定事物或概念等的角色。
它是一个非常常用且灵活的代词，能够承担多种种类和功能。
在下面的段落中，我将会详细介绍it作为不定代词的几种常见用法。
1. 作为形式主语或形式宾语在很多情况下，人们使用it作为形式主语或形式宾语来引导句子。
这是因为句子的真正主语或宾语可能是一个复杂的短语或从句，而使用it可以把这个复杂结构移到句子后面而不影响主谓结构。
例如：- It is important to have a healthy diet.（拥有健康饮食习惯很重要。
）- I find it difficult to understand this concept.（我发现理解这个概念很困难。
）2. 作为反身代词当需要表示某人自己的行动时，人们通常会使用反身代词来强调动作涉及到了自己。
在没有特指具体人物时，可以使用it作为反身代词。
例如：- I really enjoyed the concert last night. It was a great experience!（我昨晚非常享受这场音乐会。
它是一次很棒的体验！）3. 引导形式主语从句或形式宾语从句在某些情况下，it作为形式主语从句或形式宾语从句的引导词，用来替代真正的主语或宾语，以使整个句子结构清晰明了。
例如：- It is believed that exercise can improve mental health.（人们认为运动可以改善心理健康。
）- I find it hard to believe that she won the lottery.（我发现难以相信她中了彩票。
）二、不定代词it的特殊用法除了上述基本用法外，不定代词it还有一些特殊的使用方式。
在接下来的几个段落中，我将逐一介绍这些特殊用法。
1. 强调句型当想要强调一个特定的信息时，可以使用强调句型来突出该信息，并且通常把被强调的部分放在it后面。
it代词的用法
it代词的用法It可用作代词、引导词和形容词。
it的基本意思是“它”，通常指动物或事物，有时也可用来指代一个群体或一类人。
it作代词的用法(一)it可指未知的人或物。
(二)it可指已提过名字但未说明具体内容的人或事。
(三)it可表示时间，在肯定句中可代替形容词、副词、介词短语等表示时态、时局、季节、天气等概念。
(四)it可代替表示数字的名词，在时间、距离、大小、尺寸、强度等方面的词语，以避免重复。
(五)在句型转换中，有时为了避免用that来联系句子的上下文，而用it。
(六)it可用作先行词，用于强调句型中。
It引导的强调句型结构：It is/was+被强调部分（通常是主语、宾语或状语）+that/who（当强调主语且在句首时）+其余部分。
被强调部分指人时用that，其余情况一律用who。
It作形式主语和形式宾语的用法It可用作形式主语或形式宾语，而将主语或宾语从句放在句子后面。
常用作形式主语的it，在句子中没有具体语义作用，只是为了代替主语或宾语以保持句子结构的完整。
或者是为了句子的语法需要。
它的出现缓解了头重脚轻的问题。
通过举一些例子帮助记忆。
另外通过一个简单题型的练习来巩固记忆。
it作为人称代词的用法It作人称代词时，一般只用作主语，可以替代上文名词短语，相当于one；又可用来对下文不便于说出的某个人或事物进行说明、警告或表示强调等，这种用法多见于文学作品中。
It 可以用作单数或复数，多用其“is/were”的形式，而少用其“there”的形式。
It用作人称代词还有一种比较含蓄的说法：one of them（它们中的一个）。
当人称代词在句中作表语的时候，其单复数形式一般应与后面的名词相一致。
当人称代词在句中作主语时，其单复数形式则取决于句子的含义和上下文的关系。
It的其它用法(一)it还可以用作限定词（表示泛泛或反复提到的“它”），作定语修饰其他名词时必须置于名词之后，只用于单数可数名词前，相当于what或which。
“it”的用法
“it”的用法“it”在英语语法中属人称代词，意思是“它”，用来指人以外的一切生物和事物。
就这么简单吗？不！不仅不简单，而且很复杂。
下面就it的用法作一下梳理：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，在句子中既可作主语，也可以作宾语。
1．指动物和植物例：—Oh, that's Lucy's hat. 噢，那是露茜的帽子。
—It looks like a cat! 它看上去像只猫！Where's tea grown? It's grown in the southeast of China.什么地方种植茶？中国东南部种植茶。
2.指代一些无生命的东西例：Is it your watch? 这是你的手表吗？Look at the rain! It's heavy, isn't it? 看这雨！雨很大，对吗？3.代替上文提到过的整个事情例：Well, you mustn't play on the road. It's dangerous.哦，你不能在公路上玩。
这太危险了！Picking apples was hard work, but they really enjoyed it.摘苹果是艰苦活，可他们都乐意去干（它）。
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例：—Who was it? 是谁（打来的电话）？—Was it Susan? （打电话的）是苏珊吗？—Yes，it was. 是的，我是。
（根据上下句，“it was”也可不译出来。
）再如：—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例：—Is it your sister, Kate? （那旧照片上的 baby）是你姐姐凯特吧？—No! 不是。
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。
（完整版）It的用法总结
（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特殊用法
1. take it 买下2. get it 明白了解3. carry it 获胜4. make it 成功按时到达5. put it 说表达6. manage it 设法成功做……7. mean it 当真并非玩笑8. guess it 猜对了9. keep at it 别松紧、干下去10. As it is , ……照现状，…………11. That’s it（That’s right）. 就是这样（That’s all）完了12.We’ll foot it. 咱们步行吧。
13.You may depend / rely on it that I shall always help you.13. I hate it when people speak with their mouths full.14. We appreciated it if / when he offered to help us.15. I like it in the Autumn when the weather is clear and bright.16 —Do you like it here?—Oh,yes. The air, the weather, the way of life.Everything is so nice.17.When you go outing with your sisters, you must see to itthat they are safe.18. She ____to the headmaster that she has been accepted bythis college.A owes itB gives itC owe itD take19.He disliked it when she behaved badly in front of his mother.20.How comes it that you finished your work so soon?21 —Hurry up! There’s only 20 minutes left for the train.—Take your time. I think we can______.A reachB get itC make itD make for22. After so many years of hard work in the circle of themovies, she finally____A got itB made itC meant itD took it。
代词it 的特殊用法
This is not my book. It is Jim2. 用来代替指示代词this或that。
如：--- What’s this? ---It’s a pencil.3. 指小孩或不明身份的人。
如：The child smiled when it saw its mother.Someone is knocking at the door. Please go and see who it is.4. 表示时间或季节。
如：---What’s the time now? --- It’s ten o’clock.---Why do you like spring best? --- Because it is very warm.5. 表天气。
如：---What’s the weater like today? ---It’s sunny.6. 表距离。
如：How far is it from your school to your home?7. 用于形式主语，常用于下列句型中：(1)It’s + adj. + (for sb.) + to do sth. 如：It is important for us to work hard.It’s + n. + (for sb.) + doing sth. It is no use talking with him again.(2)It’s time to do / for /that …如：It’s time to get up / for lunch / that we go home.(3)It seems that …看起来像…如：It seems that he is quite happy.(4)It’s one’s turn to do sth. 轮到某人做…如：It’s your turn to sing.(5)It’s + adj. + that 从句如：It is necessary that we do some reading every day.8. 作形式宾语。
特殊句式---It用法看过来
It用法看过来it是中性的第三人称单数代词，其主格和宾格形式相同，在句中可充当主语、宾语和表语。
还可做形式主语和宾语，来替代不定式、动词的ing和从句。
★人称代词it的用法：1）.It一般指人以外的一切生物或事物。
有时也指婴儿、小孩或不知性别的人。
-Where is your car?你的车呢？-It’s in the garage.在车库里。
Look! It’s going up that tree.瞧！它正往树上爬呢。
Her baby is due next month. She hopes it will be a boy.她的孩子该下个月出生。
她希望会是个男孩。
Someone is ringing. Who might it be?有人在按门铃，会是谁呢？2).指已知或正在发生的事实或情况。
Y es, I was at home on Sunday. What about it?是的，我星期天就在家，怎么了？Stop it. Y ou are hurting me.住手。
你弄疼我了。
If I can help it, I don’t like working late in to the night. （06 全国卷）如果能行的话，我就不会熬到深夜了。
3). 指上下文内容Professor Lee gave us a lecture yesterday. It was of great interest.Professor Lee gave us a lecture yesterday, which was of great interest.昨天李教授给我们做了一个报告，很有趣。
Y ang Liwei was the first Chinese to be sent up into space. It made the Chinese proud.Y ang Liwei was the first Chinese to be sent up into space, which made the Chinese proud.杨利伟是第一个被送入太空的中国人，这使得中国人非常自豪。
it的特殊用法
it的特殊用法作者：inQ老师来源：本站原创适用年级：初中英语适用单元：全部一般情况下，it表示人以外的动物和东西，是单数名词的代词。
今天我们来说下it的一些特殊用法。
1、代指婴儿或照片、图画上的人物Look at the baby.It is asleep.看那个婴儿。
它在睡觉。
2、it作形式宾语：主语+动词+it+宾补+doing/to do sth在这个句型中，动词通常是consider, make, find, feel, think等。
当宾补是no good, no use ,useless 时，真正宾语须用动名词（也就是doing形式）；其他情况用动词不定式。
如：I think it no use telling him this matter.我认为没有必要告诉他这件事情。
They find it necessary to learn to be polite.他们发现学会讲礼貌很有必要。
3、用于引导强调句型It is/was+强调的部分+that/who/…It was not until she took off her dark glasses that I realized she was a famous film star.她摘下墨镜我才认出她是一个著名的电影明星。
It was on Sunday night that all this happened.所有这一切都是在星期日晚上发生的。
4、表示时间、季节、天气、距离、价格、重量It's six o'clock. 六点钟了。
It's winter now. 现在是冬天了。
It's rainy today.今天下雨了。
How far is it from school to your home? 学校到你家有多远？—How much is it?—多少钱？—It's five yuan.—五元钱。
it的9个常用特殊句型
含it的9个常用特殊句型1. It appears/ happens/ seems/ says that…It seems that he is always correct. 他好像总是对的。
It happened that I had no money with me. 碰巧我当时没有带钱。
2. It is said/ reported/ believed/ understood that…It is said that he has joined the Party. 据说他已经入党了。
3. It doesn’t matter…It doesn’t matter what he says. 他说什么都没关系。
4. (It is) no wonder( that) …It’s no wonder he is not hungry; he has been eating sweets all day. 难怪他不饿，他整天在吃糖果。
5.It is a waste of time /money doing sth.It’s a waste of time your talking to him. 你和他谈是浪费时间。
6. It makes no/mush difference…It’s doesn’t make much difference my being there. 我在不在那儿没有什么影响。
7. it takes sb. some time to do sth.It took me nearly an hour to work out the problem. 花了我差不多一个钟才做出那道题.8. It’s one’s turn to do sth.It’s my turn to clean the classroom. 是轮到我打扫教室的了。
9.If it were not for…If it were not for your help, I would still be homeless. 若不是你帮忙，我现在还是无家可归。
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。
代词it的用法总结
代词it的用法总结it是常见代词之一，它既可以指代时间、地点、天气、距离等，还能作形式主语或形式宾语，同时可以引起强调结构，是历年高考热点之一。
现结合高考试题对其用法作一介绍。
一、用来表示时间、天气、地点、距离、环境、形势等。
例如：It is two miles to the beach. (Oxford) 这里到海滨有两英里。
It was raining in the morning. (Oxford) 今天早晨下着雨。
If it’s convenient I can see you tomorrow. (Oxford) 如果方便，我明天能见你。
it表示时间常用于句型：1、It is/has been+一段时间+since 从句。
意为“自……以来已有多长时间了”或“自不……以来已有多长时间了”。
例如：1)It is/has been many years since I was last in London 自从我上次到伦敦，已经有许多年了。
2)It’s a long time since we met last. 自从我们上次见面以来已经有很长一段时间了。
2、It is/ was/ will be + 一段时间 + before 从句。
表示“在(做某事)前过了多长时间”，或“过了多长时间才……”。
如：But it will be more than 100 years before the country begins once again to look as it did before.但是在100年之后，这个国家才能恢复到以前的样子。
二、用来指代人。
说明某人的身份或者做某事的人;指代婴儿或儿童;在不清楚某人性别时，也可使用 it，尤其在问答的形式中更为常见。
例如：---Look, someone is coming. Who can it be?---It may be the headmaster.---It can’t be him. He has gone to Shanghai.---It must be Mr. Zhang. He looks like the headmaster.三、用来指代前文中的内容，或指代整个主句。
It的用法
It的用法一、指代已提及的事物Eg:--Whose is this dictionary?--It is mine.二、指代天气、时间、距离、地点、自然现象、环境等。
Eg:--What time is it?--It’s seven.三、作形式主语。
代替to do,doing 或主语从句。
（1）It be that+adj+主语从句Eg: It is possible that we all arrive there tomorrow.(2)It be +名词/名词词组+主语从句常用的名词：a fact/a pity/a shame/ no wonder/common sense(常识）Eg: It’s a pity that we lost the game.It is common sense that drinking much water after a meal is harmful to your health.(3)It be +过去分词+主语从句常用的过去分词：said/reported/announced/known(4)It be +adj+to do(5)It be+名词/名词词组+to doEg:It is a good habit to get up early.(6)It takes sb +时间+to do sth(7)It is up to sb to do sth(8)It is +名词/名词词组/形容词+doing sth常用的词：no use/no good/useless/senseless四、it作形式宾语，代替后面作真实宾语的不定式（to do,doing形式或宾语从句）Eg:I think it difficult to learn English well.I think it useless/no use saying too much.I think it necessary that we master some first aid skills.五、用于某些惯用语中Make it(成功，做成）Believe it or not (信不信由你）I got it（我明白了）Keep at it(别松劲）I can not help it(我无能为力）六、强调句（it was/is +被强调的部分+that/who+句子的其他的成分）被强调的部分为：主语，状语（时间状语、地点状语、原因状语、方式状语），宾语。
“It” 重点用法归纳
“It” 重点用法归纳一、it在特定句型中的运用1. It was/will be long(one week/two years ...)+before从句此句型可译为“很久(一周/两年后……)才……”。
如:It was long before he came back.很久以后他才回来。
It will not be long before we meet again. 不久我们就又会见面。
2. It is/has been/was + some time + since从句此句型可译为“自从……以来已经有多长时间了”。
如:It is / has been more than fifty years since the People’s Republic ofChina was founded.中华人民共和国成立已经有五十多年了。
It was three days since he had fallen ill. 他生病已经有三天了。
注意:①如果since从句中的谓语动词为延续性动词时, 应译为“自从不……以来已经有多长时间了”。
如:It is / has been seven years since I taught in this school.我离开这所学校已经有七年了。
②时态的把握:如果主句运用的是一般现在时或现在完成时,那么since引导的从句用一般过去时;如果主句运用的是一般过去时,那么since引导的从句常用过去完成时。
3. It + be + the +序数词+ time + that从句此句型可译为“是某人第几次做某事了”。
如:It is the first time that I’ve spoken in public.这是我第一次公开发言。
注意:如果主句是一般现在时或一般将来时,从句用现在完成时;如果主句是一般过去时,从句用过去完成时。
4. It +be +具体时间+ when ...此句型可译为“当某事发生时,时间是在……”。
it 的特殊用法 高考例句
IT的特殊用法及高考例句IT 作为代词的特殊用法IT 可以代替除人以外的一切生命物体，相当于“它”或“它们”。
例如：—Have you seen IT ? 你看见它了吗？—IT is a beautiful flower. 它是一朵漂亮的花。
高考例句：In my opinion，IT is unnecessary to buy a new car for me.（2010·山东）我寻思，对我来说买一辆新车是没必要的。
注意：当句子中提到了特定的性别时，仍使用相应的代词。
例如：—Who is the girl in red? 穿红衣服的女孩是谁？—She is my sister. 她是我妹妹。
IT 作为副词的特殊用法作为副词，IT 可以表示时间、地点等概念，相当于“以某种方式”或“在某个地方”。
例如：—When will you go to the airport? 你们什么时候去机场？—We will go IT on foot. 我们将步行去。
高考例句：She is used to living in IT ways.（2011·辽宁）她习惯于过这种生活。
IT 作为介词短语的特殊用法IT 作为介词短语可以表示时间、地点等概念，相当于“在……情况下”或“对于……来说”。
例如：—When will you finish your homework? 你什么时候完成你的作业？—In IT half an hour. 在半个小时内。
高考例句：In IT way，I think the blue shirt is more suitable for you.（2011·四川）我认为从某种程度上来说，那件蓝色衬衫更适合你。
8 o'clock. 在这个短语中，IT 指的是时间，相当于“在8点钟”。
例如：In IT early morning. 在凌晨一点多钟。
When we arrive at the airport at eight o'clock，the shops will still be open. 我们八点钟到机场时，商店还开着。
It 的特殊用法
It 的特殊用法1）强调结构It is + 主语（从句）/ 宾语（从句）/ 状语（名词 / 介词短语 / 从句）+ that / who / whom…特别要注意 (特殊) 问句和宾语从句中的强调结构①(Who /What) was it that + 谓语 + 其他？②(Wh-- ) was it that + 主语 + 谓语 + 其他？回答：Yes, it was; No, it was not;（What…is that…也是强调结构）2）形式主语代替1、不定式① It is + 形容词/名词 + （for sb.） to do sth.; （表示做某事怎样用for，形容词有：easy / difficult / right / wrong / important / necessary /essential / a (n) pleasure / pity / honor）②It is + 形容词 + of sb. to do sth （表示主语特征时用 of; 形容词有：赞成good, nice, kind, clever, brave, bold, honest, polite, careful；责备wrong, bad, rude, cruel, careless, naughty, silly, foolish, stupid）③ It takes / costs / requires + n.+（for sb.）to do sth.= It takes sb. + n.+ to do sth.2、动名词It is no use / good doing sth; It is not any use / good doing sth.. It is worthwhile doing sth. It isn't much fun doing sth; It is simply a waste of time doing sth;3、主语从句①It is + 形容词 / 名词 / 现在分词 / 过去分词 + that：likely，clear, possible，obvious，necessary，important，essential，advisable，strange， amazing，a pity，a fact，a wonder， a shame， an honor，no wonder，surprising，announced， believed， considered， expected，estimated，hoped，known，reported，rumored，said，supposed，thought，suggested, advised, demanded, ordered, requested,② It seems /appears / happens /turned out / proved that…;③ It occurs to sb./ It strikes sb. that…3) 形式宾语代替1、不定式 find / think / consider / regard / feel /make… + it + 形容词/名词（做宾补） +（for sb.） to do;2、动名词find/think/consider/feel/make… + it + 形容词/名词+ doing;3、宾语从句 find/think/consider/feel/make… + it + 形容词/名词 + that…4) 表时间1、 It is + 一段时间 + since + ①瞬间动词的过去时：…已经多久了；②延续性动词的过去时：指该状态结束以来已有多久了2、 It was + 时间点 + when + 动词的过去时：已经是…3、 It will be / won’t be + 一段时间 + before + 动词的一般现在时：要过多久…/过了不久It was/wasn’t + 一段时间 + before + 动词的过去时：要过多久…/ 过了没多久1。
It的特殊用法
It的特殊用法一、作形式主语1．（1）It’s + adj.+ to do sth.It’s important to study English well.(2 ) It’s + adj. +that…It’s important/ necessary/ likely/ possible/ certain/…that…It’s likely that he will win the game.It’s certain that he will come this afternoon.2. It’s + v-ed + that…(1) It’s said/ thought/ believed/ supposed/ reported/ proved/ known…that…It’s known that the earth travels round the sun.= As is known to everybody, the earth travels the sun.= What is known to everybody is that the earth travels the sun.(2) It’s suggested/ advised/ proposed/ requested/ required/ insisted/commanded/ demanded/ ordered/…that…It’s suggested that she（should）finish her homework this afternoon.It’s required that I (should) go at once.3. (1) It’s + 名+that…常见的名词有：a pity, a fact, an idea, an honor, no wonder等It’s a pity that he can’t come to the party.It’s a fact that he didn’t pass the exam.It’s a good idea that we’ll go outing.It’s an honor that I was invited to the meeting.(It’s)no wonder (that) he always takes the first place in the exams.(2) It’s + 名+doing常见的名词有：use, goodIt’s no use crying.It’s no good crying over spilt milk.【谚语】牛奶溢了，哭也没用。
It 用法
It 用法1.代替已提到的事物或上文提及的情况。
He bought a new book and lent it to me.2.用来指代天气、距离、时间等。
It is very warm today.It is ten minutes’ walk from our school to the post office.3.强调句型it is/was ……that/ who ……It is the environment that we should pay attention to.It is I who save the drowning girl.4.形式主语和形式宾语It is very important to study hard.I have made it a rule to have a walk after supper every day.5.特殊句型①It takes/ took sb some time to do sthIt takes us two hours to do homework everyday.②It is +形容词for/ of sb to do sth (如果用of, 则常见形容词是带有感情色彩的，如：foolish, kind, nice, rude, stupid等)It is very necessary for us to master a foreign language.It is very kind of you to help me.③It is +形容词+that 从句形容词有important, necessary, impossible, natural 等时，that从句通常用虚拟语气should + 动词原形，should 可以省略。
It is very important that we should keep the balance of nature.④It is time that 从句(从句用虚拟语气)（从句用动词一般过去时或should+ 动词原形,should 不能省略）It is time that you went to bed.= it is time that you should go to bed.= it is time for you to go to bed.⑤It is said/ supposed/ known/ reported that 从句It is said that the novel has been translated into several foreign languages.⑥It is the + 序数词+ time+ that 从句(从句用现在完成时)It is the first time that I have been to Beijing.It was the + 序数词+ time+ that 从句(从句用过去完成时)It was the first time that I had been to Beijing.⑦It is + 时间+ since从句It is ages since I last saw him.It is two years since we entered this school.6. 模糊指代。
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It的特殊用法
一、作形式主语
1．（1）It’s + adj.+ to do sth.
It’s important to study English well.
(2 ) It’s + adj. +that…
It’s important/ necessary/ likely/ possible/ certain/…that…
It’s likely that he will win the game.
It’s certain that he will come this afternoon.
2. It’s + v-ed + that…
(1) It’s said/ thought/ believed/ supposed/ reported/ proved/ known…that…
It’s known that the earth travels round the sun.
= As is known to everybody, the earth travels the sun.
= What is known to everybody is that the earth travels the sun.
(2) It’s suggested/ advised/ proposed/ requested/ required/ insisted/
commanded/ demanded/ ordered/…that…
It’s suggested that she（should）finish her homework this afternoon.
It’s required that I (should) go at once.
3. (1) It’s + 名+that…
常见的名词有：a pity, a fact, an idea, an honor, no wonder等
It’s a pity that he can’t come to the party.
It’s a fact that he didn’t pass the exam.
It’s a good idea that we’ll go outing.
It’s an honor that I was invited to the meeting.
(It’s)no wonder (that) he always takes the first place in the exams.
(2) It’s + 名+doing
常见的名词有：use, good
It’s no use crying.
It’s no good crying over spilt milk.
【谚语】牛奶溢了，哭也没用。
（覆水难收）
4.It + 动+ that…
常见的动词有：happen, seem, matter 等
It happened that I hadn’t money with me.
It seemed that he had known the fact..
Does it matter that he doesn’t come..
二、作形式宾语
1.用于复合结构，可以用一句话“没克服它”来记忆如下六个动词：make,
consider, feel, find, think, take.
He made it clear that he was not interested in English .
He considered it a good idea to go outing with me.
I feel it a great honor to be invited to speak here.
I find it very interesting to study English.
I think it no use arguing with her.
I took it for granted that he would give me some help.
2. 用于表示喜好的动词：like, dislike, hate, appreciate 等。
I hate it when people talk with their mouths full.
I like it in the autumn when the weather is clear.
I’d appreciate it if you would like to teach me how to use the computer.
三、it 的几个特殊结构
1.make it
(1)表示“成功、做到、赶上”
——The train is to leave in five minutes.
——We will never make it.
We can’t make it to the other shore in cold weather.
(2)表示“确定时间”
——When shall we meet?
——Let’s make it next Sunday.
2.as it is
(1)用于句首，表示“事实上”
I thought he would get better, but as it is he is getting worse.
(2) 用于句尾，表示“照原样”
Leave the chair as it is.
3.see (to it) that…注意、留神、负责、保证
See to it that everything is ready.
4.rely on it that…信任、对。
有信心
You may rely on it that she won’t be late.
你可以放心，她不会迟到的。
四、it 的几个特殊句型
1. It is/was + 时间状语+ that…强调句
It was at seven o’clock that I went to work yesterday.
2.(1) It was + 时间点+ when 从句（一般过去时）
(2) It will be + 时间点+ when 从句（一般现在时）
It was 9 o’clock when they arrived at the factory.
【注意】这一句型中的时间只能是表示时间点的名词，前面不能有介词。
It will be July 1 when we meet again.
It is on July 1 that we will meet again.
3.(1) It is/has been + 时间段+since 从句（一般过去时）
It is/has been three years since he joined the army.
(2) It was + 时间段+ since 从句（过去完成时）
It was three days since he had fallen ill.
他生病已经有三天了。
【注意】这一句型since 从句中的谓语动词如果是延续性动词，则翻译成“不做某事多久了”。
It is years since I taught in this school.
我离开这所学校已经几年了。
It is years since I worked in that factory.
我不在那个工厂几年了。
It is years since I lived in this city.
我离开这个城市已经几年了。
It is years since I enjoyed myself so much.
我好几年没玩的这样痛快了。
4.（1）It was + 时间段+before 从句（一般过去时）
It was three days before I knew the result.
(2）It will be + 时间段+ before 从句（一般现在时）
It will be three days before I know the result.
【注意】（1）时态要一致，before 从句只有一般现在时和一般过去时
两种时态。
（2）翻译成“过多久才/就。
”
5. (1) It is the first time + that 从句（现在完成时）
It is the first time that I have spoken in public.
（2）It was the first time + that 从句（过去完成时）
It was the first time that I had spoken in public.
6．It is (high/about ) time + that从句（一般过去时）
It’s time that I went to work.
=It’s time that I should go to work.=It’s time for me to go to work.。