it的详细用法
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。
It 句型归纳：
1． It is ＋adj．(＋for sb．／sth．) ＋ to do sth．
用于此句型的形容词有：easy， hard， difficult，possible， important，impossible， necessary， good， bad， exciting， interesting， surprising 等。如： It is necessary to change your job．
It was very hard for them to walk such a long way in the snow．
2．It is ＋n．(＋for sb．／sth．) ＋ to do sth．
用于此句型的名词有： pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。如：
It is a pity for you to have missed such a wonderful play．
It is bad manners for the young to take up the seats for the old．3．It is ＋adj．＋of sb．＋to do sth．
此句型中的形容词主要描述某人的品德、特征。能用于该句型的形容词有：kind, nice, wise, silly, polite, impolite, friendly, foolish, clever等。如：How silly it was of you to give up such a good chance！
It is friendly of the family to try to make me feel at home in their house．4．It is ＋adj．（＋n．）＋doing sth．
此句型中的形容词和名词常见的有：no／little use, no／much good, useless 等。如：It’s no use crying over spilt milk．
5．It takes sb．＋一段时间＋to do sth．表示“做某事花费某人多长时间”。如：It took us half an hour to ride to the town by the sea．
6．It is ＋及物动词的过去分词＋that从句
此句型中常见的及物动词的过去分词有：said, told, known, reported, recorded, thought, believed, considered等。如：
It is reported that the Russian President will visit China next week．7．It ＋不及物动词＋that从句此句型中不及物动词常见的有：seem， happen，
appear， matter等。如：
It seems that there will be a heavy snow tomorrow．
It happened that I met my good friends in the museum yesterday．8．强调句型：It is＋被强调部分＋that／who从句
在使用强调句型时要注意，指人时可以用who或that，其它情况一律用that。如：It was under the bed that my brother hid the ball this morning． It is Mr Bell who／that often comes and looks after the old man．9．It is／has been＋一段时间＋since从句。如：
It is ／has been three years since we saw each other last．
10．It is (high) time that sb． did sth．
该句型表示“某人现在该做某事了”，从句常用过去时（虚拟语气）说明现在应该做的事情。如：It’s six o’clock．It is high time that we went home now．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、及时到达例 It's hard to make it to the top in show business.
（2）在口语中相当于fix the date for，表示“约定好时间”
例—Shall we meet next week？
—OK. We just make it next Saturday.
2. as it is
（1）相当于in fact，in reality表示“事实上，实际情况是……”
例 We had planed to finish the task today，but as it is we probably won't finish it until next week.
（2）相当于方式状语从句，表示“照原样”例 Leave the table as it is.
3. as it were
相当于as one might say，that is to say，表示“也就是说，可以说，换句话说”例 He is，as it were，a modern Sherlock Holmes.
4. if it weren't for…/if it hadn't been for…
用来引导虚拟语气，相当于without，or but for，表示“如果不是……，要不
是……”例 If it weren't for Tom，I wouldn't be alive today.
5. that's it
（1）相当于That's all. That's so much. 表示“至此为止，没有别的了”
例 You can have one more sweet，and that's it.
（2）相当于 That's right.表示“对啦”
例— I guess the key to the problem is thechoice “A”—That's it.
6. catch it
在口语中，相当于be punished/scolded for doing sth. wrong. 表示“因做错事而挨骂，受责备，受批评，受惩罚”
例 We'll really catch it form our teacher if we're late for class again.
7. have it
（1）相当于say，insist表示“说，主张，表明，硬说”
例 Rumour has it that they are getting divorced.
（2）相当于get to know something，表示“了解，知道，获悉”
例 I had it from John that she was going abroad.
8. have what it takes
在口语中，相当于be well qualified for，表示“具有成功的条件”
例 You can take it from me that your daughter has what it takes to be
a star.
9. so it seems / appears.
10. Keep at it！（Don't give up！）相当于go on，表示“继续做，不放弃”例 My teacher asked me to keep at it.
11. Go it！（Go on！）拼命干，莽撞
12. Now you have done it！（You have done sth. wrong.）
13. Now you'll catch it！（You'll be punished.）
14. As it happened，…在口语中，相当于it's a pity that…，表示“真不凑巧，真遗憾”例 As it happened，they were out.
15. As it turned out，…
在口语中，相当于it was found to be in the end，表示“最后被证明是”
例 As it turned out，his statement was false.
16. Such as it is（they are）
在口语中，相当于although it may not be worth much，表示“虽然没有多大价值”
例 You can borrow my exam notebook，such as it is.
17. Take it/things easy.
相当于Don't worry or don't hurry. 用来劝告别人，表示“不要慌，别担心，存住气”
例 Take it easy！ He will do it well.
18. Take it from me.
在口语中，相当于believe me what I say.表示“请相信我的话，我敢担保”
例 You can take it from me that he will make it this time.
19. For what it is worth…
在口语中，相当于although I'm not sure it's of value，表示“不管其价值如何”例 Here is the article I promise you，for what it's worth.
20. Worth it在口语中，相当于useful，表示“有好处，值得做”
例 Don't hesitate about it！ It's worth it.
21. Believe it or not.表示“信不信由你”
例 Believe it or not，Tom is getting married to Mary next Sunday. 22. Take it or leave it. v. 要么接受要么放弃
例 That is my last offer. You can take it or leave it.
23. It all depends/that all depends在口语中，相当于it hasn't been decided yet，表示“那得看情况，还没有定下来”
例—Are you going to the countryside for holiday？—It/That all depends.
24. It's up to sb.在口语中，相当于it's decided by sb. 表示“由……决定，由……负责，取决于……”
例—Shall we go out for dinner？—It's up to you.
it用法小结：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。
一、it 作人称代词的用法
1. 指事物作为人称代词，it 可以除人以外的一切事物或动物。如：
I dropped my watch and it broke. 我把手表掉在地上摔坏了。
It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。
“Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。
2. 指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如：
Is it a boy or a girl? 是男孩还是女孩?
There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。
【说明】在答语中，常用来指本人，如说 It’s me。
3. 代替某些代词
代词 it 还可用于代替指示代词this, that 以及复合不定代词 something, anything, nothing等。如：
“What’s this?”“It’s a new machine. ”“这是什么?”“是一种新机器”。Nothing is wrong, is it? 没出什么问题，是吗?
二、it 作非人称代词的用法
1. 基本用法
it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如：
It’s too late to go there now. 现在去那儿已经太迟了。
It rained all day yesterday. 昨天下了一天的雨。
It can get very hot here. 这里有时会很热。
2. 用于某些句型
It’s time for sth. 该做某事了。It’s time to do sth. 该做某事的时候了。It’s time for sb to do sth. 某人该干某事了。
It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”)
It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现
在完成时)
It’s + 时间段 + since-从句. 自从……有一段时间了。
It’s + 时间段 + before-从句. 过多长的时间才……
三、it用作形式主语
1. 基本用法
当不定式、动名词、从句等复杂成分用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it。如：
It’s very important to remember this. 记住这一点很重要。
It’s hard work climbing mountains. 爬山是费劲的事。
It’s unknown when he will come. 他什么时候来还不知道。
2. 用作形式主语的的重要句型
(1) It + be + adj. for (of) sb to do sth 某人做某事……
It is hard for him to make up his mind. 他很难下定决心。
It was foolish of her to say such a thing. 她说那样的话，真是太蠢了。【说明】介词 of 与 for 的区别是：
of 用于指某人的性格、属性、特征等，介词for表示对象，意为“对……来说”。
(2) It takes sb + 时间段 + to do sth. 某人做某事花了……时间
It takes years to master a new language. 要花多年的时间才能掌握一门新的语言。
【说明】此句型可以有以下多变种变体：It took me an hour to write the letter. =The letter took me an hour (to write). =I took an hour to write the letter. 我写这封信花了一个小时
(3) It is up to sb to do sth. 该由某人做某事
It’s up to you to to make the choice. 得由你来作选择。
(4) it look (seem, appear, happen, occur) that [as if]…似乎……
It seemed as though he didn’t recognize me. 他似乎没认出我来。
It happened that I was out when he called. 他打电话时我碰巧不在家。(5) If it were not for… / If it hadn’t been for…若不是因为……
If it were not for their help, we couldn’t have got over the difficulties.
要不是他们帮助，这些困难我们不克服不了的。
四、it用作形式宾语
1. 基本用法
当不定式、动名词、从句等复杂成分用作宾语且其后跟有宾语补足语时，通常会在宾语补足语前使用形式宾语，而将真正的宾语移至句末。
其基本结构为“动词+it+宾语补足语+不定式(动名词或从句)”。如：
I find it difficult to do the job well. 我发现做好这件事不容易。
I think it best that you should stay here. 我认为你最好住这儿。
We think it no use complaining. 我们认为抱怨是没有用的。
2. 用作形式宾语的几个特殊结构
(1) 动词+ it + that-从句。如：
I like it that you came. 你来了，我很高兴。
I take it (that) he will come on time. 我认为他会准时来的。
You can put it that it was arranged before. 你可以说这是以前安排的。Rumor has it that the defence minister will soon resign. 据传闻，国防部长不久就要辞职。
【说明】能用于此结构的动词不多，常见的有 have, take, put, like 等。
(2) 动词 + it + when (if)-从句。如：
I dislike it when you whistle. 我不爱听你吹口哨。
We really appreciate it when she offered to help. 她来帮忙了，我们十分感激。
I’d prefer it if I didn’t have to do so much work. 要是我不必做那么多工作，好就太好了。
【说明】能用于此结构的动词不多，常见的有 enjoy, hate, love, like, dislike, appreciate, prefer 等。
(3) 动词 + prep + it + that-从句。如：
See to it that you’re not late again. 注意千万不要再迟到。
Look to it that this doesn’t happen again. 注意不要再发生这种事。
You may rely on it that he’ll come to meet you. 你放心，他会来接你的。
I can’t answer for it that he will come. 我不能保证他会来。
【说明】能用于此结构的动词不多，常见的有see to, look to, insist on, stick to, depend on, answer for 等。
(4) 动词 + it + 介词短语+ that-从句。如：
I owe it to you that I am still alive. 多亏有你我才仍然活着。
I took it for granted that he would help us. 我认为他会帮助我们的。【说明】能用于此结构的动词不多，常见的有take it for granted, bring it to sb’s attention, owe it to sb 等。
it在强调句中的使用 It is＋被强调部分＋that(who)＋其他
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。
5. 不管被强调部分是单数还是复数，其前一律用It is / It was，而不能用They are / There were之类的。
6. 被强调部分是指人时，被强调部分后可用that / who，被强调部分指物时，被强调部分后只能用that。
7. 被强调部分是指时间或地点时，被强调部分后通常用that，一般不用when，where之类的。例：
It is I who am right. 是我对。
It was you that were wrong. 是你错了。
It was in the Japan that he died. 他是死于日本。
It was yesterday that he got married. 他是昨天结婚的。
It was a computer that he bought last week. 他上个星期买的是一台电脑。Where was it that she lived? 她是住在什么地方?
When was it that he left for Japan? 他是什么时候离开去日本的?
Who is it that teaches you English? 是谁教你们英语?
It 的用法总结
It 的用法总结 一. 代词: 1)指代上文 2)指代this/that 3)指代未知性别的婴儿或孩子或身份不明的人 4）指代时间/地点/天气/温度/距离/环境 What does “it” refer to? 1.It gets dark very early in the winter. 2.What will you call it if it’s a boy? 3.I love spring---It’s a wonderful time of the year. 4.It’s less than 100 kilometres from here to Jinan. 5.When the factory closes, it will mean 500 people losing their jobs. 6.What’s this? It’s a cat. 7.It has snowed much this year. 注意：it, one和that, those作替代词的区别 (1)The book in your bag is very interesting. Can I borrow ? (2) The book in your bag is more interesting than ______ on the desk. (3) The weather here is much colder than____ in Nanjing. (4) The books are free. You can take____ free of charge. (5) The books in the bag are better than _____ on the desk. it 表示特指，与前面指代的名词是同一个 one 表示泛指，指代单数可数名词，与指代的名词同类但不同一个 that表示特指，相当于the+名词单数，与指代的名词同类但不同一个those表示特指,相当于the+复数可数名词, 与指代的名词同类但不同一个
2011届高考英语一轮复习讲解：it的用法
2011届高考英语一轮复习讲解：it的用法【知识要点】 It的用法 （一）作人称代词 1、it代替前面（或后面）的单数名词或分句等所表示的事物。 e.g. You cannot eat your cake but have it.（it代替前面的cake） Although we cannot see it, there is air all around us. （it代替后面的air） They say he has left town, but I don’t believe it.（it代替前面They…town分句中的情况） 2、代替有生命但不能或不必分阴阳性的东西（包括婴儿）。 e.g. Yesterday we saw a big tree. It was fully twenty metres high. （it代替前面的tree） The baby cried because it was hungry. （it代替前面的baby） 3、在某些习惯说法中，可以代替人。 e.g. ---- Someone is knocking at the door, Peter. ---- Who is it? ---- It’s me. ---- Who are singing? ---- It is the children. ---- The light is still on in the lab. It must be the third-year students doing the experiment. 4、it与one的区别：这两个词都可以代表前面说过的名词，但it用于同名同物的场合；one则用于同名异物的场合。 e.g. ---- Do you still have the bicycle? ---- No, I have sold it. ---- Is this knife yours? ---- No. It is Xiao Zhang’s. Mine is the one on the desk. 5、it与that的区别：两词都可代替某一特定名词，但that指同一类，并非同一个。 e.g. The climate of South China is mild（温和的）; I like it very much.（it指the climate of South China） The climate of South China is much better than that of Japan.（that指the climate）（二）作无人称代词 it作无人称代词时，除了句中找不到它所代表的词语外，另一个特点是它后面的内容都是表示天气、时间、距离、度量衡及情况等。 It is fine (rainy, windy, etc.). It is noon. It is a half hour’s walk to the f actory. It is eighteen square metres in area. What does it matter? （三）作强调词，构成强调结构
it的用法归纳
?Never be afraid of grammar ?Collect some examples; ?Watch them very carefully; ?Find out something in common; ?Try to use the rules ---- practise. it用法完全归纳 一、it 作人称代词的用法 1.指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?”“It’s in the bedroom. ”“狗在哪?”“在卧室里”。 2.指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。
3.代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?”“It’s a new machine. ”“这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1.基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2.用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。 It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”) It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)
(完整版)it的用法练习题
it的用法练习题（一） 1.It took us over an hour _____________along the street. A. walk B. to walk C. walking D. walked 2.I think it a great honor ________to visit your country. A. to invite B. inviting C. having invited D. to be invited 3.Many people now make_____________ a rule to buy cards for their friends before Christmas. A. themselves B. it C. that D. this 4._____is very clear to everyone that he's round and tall like a tree. A. This B. What C. That D. It 5.In the United States, bus travel doesn't cost much as train travel,_____________? A. don't they B. does it C. do they D. doesn't it 6.Someone is at the door, who is_____________? A. this B. that C .it D. he 7.—It is raining cats and dogs. —_____________ . A. So it is B. So is it C. Neither it is D. Neither is it 8.—My home is in that tall building over there. —_______________? A. Can it see B. Can see it C. Can be seen it D. Can it be seen 9. _____________raining hard for 3 hours without stopping. A. It is B. It was C. It has been D. It had been 10.—Has the boy got his bicycle now? —Yes, the police gave_____________. A. him to him B. it to it C. it to him D. him to it 11.—Boy, —It is, looks like spring is coming soon.
-it的用法及强调句型(精心整理)
it的用法及强调句型 it的用法 一、it作指示代词【完成句子】用one，ones，it，that，those填空 (1) — I can't find my watch. —You haven't found ______？If you want to buy a new ______，I suggest you buy ______ made in China. (2) We've got a big cup and two small ______. (3) The weight of an elephant is much greater than ______ of a tiger. (4) The books on the first shelf are easier than ______ on the second shelf. (5) The boy told his story and ______ of the girl upstairs. 【答案】(1) it; one; one (2) ones(3) that (4) those / the ones (5) that / the one 【结论1】 ①指代上文提过的事物时，it指的是同名同物，相当于the＋名词； ②one指的是同名异物，表示单数可数名词相当于a ＋名词；a / an＋形容词＋one等于a / an＋形容词＋名词；复数形式用ones； ③that后面常有后置定语，有特指意义，代替不可数名词或单数可数名词，相当于the＋ 名词； ④复数名词用those，相当于the ones。 【例句观察】— Someone is knocking at the door. Who is it? — It must be Leo. He said he'd come to see me. 【结论2】it指代人时，常指小孩或身份不明的人。 【例句观察】It's too quiet in the room. Everyone just keeps silent. 【结论2】it可用以指代环境或情况。 (6)— What time is it now? — It's half past seven. (7)— It is spring now and it's warm these days. 【结论3】it可用以指代时间、季节、天气或距离。 【注意】it指代时间时，有如下一些句型： (1) It is time for sth. (for sb.)to do sth. / that－从句(should do / did, 必须用虚拟语气) 例：① It's time for lunch. ② It's time for us to clean the house. ③ It's time that we should clean the house. ＝It's time that we cleaned the house. (2) It is / has been ＋some time ＋since－从句(从句用一般过去时) It is 10 years since I graduated from college. (3) It / This/That is the first / second time that－从句(必须使用现在完成时)这是某人 第……次做了某事。 It / This/That was the first / second time that－从句(必须使用过去完成时) 例：①It is the second time that she has visited the Great Wall. ②This was the first time that I had come late to school. (4) It was ＋时间点＋when －从句 例：It was evening when we got home. ＝It was evening in which we got home. (5) It was / will be ＋some time ＋before －从句 例：①过了5年他们才从北大毕业。 It was five years before they finally graduated from Beijing University. ②不久，我们就要从我们学校毕业了。 It won't be long before we graduate from our school. 二、it作形式主语 1.代替主语从句 ①It is clear ( obvious，true，possible certain....) that ..... “清楚（显然，真的，肯定．．．）” ②. It is important ( necessary，right，strange，natural...) that ... 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。 It is important that we (should) learn English well.
make it全部用法详解
用法一表示事业获得成功 You will make it if you try. 你会成功的，如果你努力的话。 He’s never really made it as an actor. 他当演员从未有所成就 用法二表示某人做成某事 You needn’t worry; he will make it. 你不必担心，他会办成的。 If you want to make it, better get doing. 如果你想把这事干成，就该动手了。 I can’t make it on Friday.It’s very short notice. 星期五我办不好，时间太短了。 Many high-wire walkers died on their last step, thinking they had made it. 许多走绳索者死在最后一步上，这时他们认为已经表演成功了。 I thought he would be too old to get to the top of the mountain, but he made it at last. 我原以为他年纪大爬不到山顶，但最后他还是爬上去了。 用法三表示设法做到某事 I’ve been having violin lessons every two weeks, but I think I’ll make it every week from now on. 我一直是每两个星期上一次小提琴课，但是我想从现在起每个星期都上课。 用法四表示及时赶上火车等
The train leaves in five minutes—we’ll never make it. 火车再有五分钟就开了——我们绝对赶不上了。 The train won’t le ave for another ten minutes, so I think we can make it. 离开车还有10分钟，我想我们能赶得上。 用法五表示及时抵达某地 We are too late; I don’t think we can make it. 我们太迟了，我想我们难以准时赶到了。 He says he’ll come on time, but he’ll never make it. 他说他明天准时来，但他绝对做不到。 I’m really sorry, but I won’t be able to make it on Sunday after all. 真的很抱歉，我星期天根本赶不到。 If you can’t make it Friday, we can invite somebody else. 如果你星期五赶不到，我们可邀请其他人。 用法六表示约定时间 “When shall we meet again?” “Make it any day you like; it’s all the same to me.” “我们什么时候再次碰头?”“随你定在哪天，我无所谓。” Let’s make it at seven o’clock on Tuesday morning at my office. 我们把时间定在星期二早上七点，地点就在我办公室。
It的用法及典型句型归纳. 个人总结
It的用法及典型句型归纳 一、人称代词it的最基本用法是作代词，主要指刚提到的事物，想法，以避免重复;也可以指性别不明或性别被认为是不重要的人或动物；未指明但谈话双方都明白的事情或情况。 ①They watched the train until it disappeared in the distance. ②Is this your dog？No, it isn’t. ③I hate it when people talk with a full mouth.． 二、.非人称代词.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： It is a lovely day, isn’t it? // It was nearly midnight when she came back. It is April First today. // It is some 3000 kilometers from A to B. It is three dollars. // Today it is 30 degrees centigrade. 三、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 ＂┅清楚的（显然的，真的，可能的,肯定的．．．）＂ ⑵It is important ( necessary，right，strange，natural...) that + (should ) do (虚拟语气) ┅是重要的(必要的,对的,奇怪的,自然的┅) ⑶It is said (reported/ learned/believed/thought/known/told/hoped.....) that = sb / sth is said (reported/ believed /thought…) to do( to be doing/ to have done) sth ＂据说（据报道，据悉．．．）＂。 ⑷It is suggested ( advised/ ordered / demanded/ insisted/ commanded... ) that +(should ) do ＂据建议；有命令．． ⑸It is a pity ( a shame /an honour/a good thing/a fact,/a surprise/... ) that 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。 小练一下： It is very clear that he’s round and tall like a tree. = It is important that we (learn) English well. It is necessary that he (remember) these words. It is said that he has come to Beijing. = It is reported that another earth satellite has been put into orbit. = It is suggested that the meeting ( put off). It was ordered that we (arrive) there in two hours. It is a pity that such a thing ( happen) in your class. It is a pity that he (be) ill. 2.作形式主语替代不定式 . ⑴It is kind ( of sb. ) to do sth.= sb be kind to do sth.一般都是表示人的特性的形容词。如： bad /brave /careless/ clever /cruel / foolish / good （好心的）/ honest/ kind / lazy / modest/ naughty/ nice（有教养的）/polite/ rude / silly / stupid / wise ，等。 Eg. It is kind of you to give me a hand. = ⑵It is necessary ( for sb. ) to do sth. .不定式的逻辑主语是由for引起。常见的形容词有： Important/ necessary/ natural/ easy / safe / common / normal / hard / difficult / dangerous/ unusual/ rare / impossible / pleasant Eg. It is important for her to come to the party.
it的用法
一. 基本用法 1. 用作人称代词，代替上文提到过的事物，或事物（同名同物）。The train has arrived. It arrived half an hour ago. I have a car, so you can borrow it. one 指代单数可数名词，同名异物。He has an MP4, but I will buy one tomorrow. that特指单数可数名词或不可数名词。The population of China is larger than that of Japan. The weather of Chongqing is hotter than that of Beijing. 2. 用来代替提示代词this, that。—What’s this?—It’s a knife. —Whose watch is that?—It’s mine. 3. 指代不明性别的人。—Who is knocking at the door? —It’s me. It is a baby. 4. 指环境情况、时间、日期、天气、温度、季节、距离、价格、速度等。It was very noisy at the very moment. —What time is it? —It’s eight o’clock. It often rains in summer here. It is a long way to the school. It is 29 ℃ today. It is five kilometers away. 5. 作形式主语。It is not easy to finish the work in two days. It is no use helping him solve the problem. It is a pity that you didn’t read the book. 6. 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. 7. 用于强调结构。①It is/was + 被强调部分+ that/who + 原句剩余部分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. Was it in the street that you met her? ②特殊疑问词+is/was+it+that+原句剩余部分Who was it that broke the window? What is it that you want me to do? Where was it that he bought the bike?③对until进行强调要把not放在前面。It was not until yesterday that I met my old friend.It was not until he told me that I knew it.④对as,since引导的原因状语从句，要把as,since变成because.It was becaude he got up late that he missed the first bus.⑤判断是否是强调句的方法：It is/was…that/who去掉，看句子是否完整，完整的是强调句。It is there that accidents often happen. It is clear that not all the boys like football. ⑥注意强调句与主语从句、定语从句、状语从句的区别It is a good idea that occurs to me suddenly（强调句）. It is a good idea that we play basketbll after school(主语从句). It is in a small factory that my brother is going to work（强调句）. It is a small factory where my brother is going to work.（定语从句）It wa s five o’clock when the plane landed at the airport(状语从句). It was at five o’clock that the plane landed at the airport（强调句）. 二. 含有it的句型 1.It is time (for sb.) to do sth. It is high/about time that sb. did/should do sth.(虚拟语气) It is time for us to have a rest. It is high time that we took/should take action. It’s about time that we went to the airport. 2. It is + adj. +of / for sb. + to do sth. 形容词为brave, clever, careful, hopeless, kind, good, naughty, nice, silly,stupid,foolish, wise等对人的品质或性格进行评价的词, 一般用 of. It is very kind of you to help me. 3. It is + adj. + 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, 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 no good arguing with your leaders. 5. It is said/reported/announced/ (well) known … that… It is said that he does well in English. 6. It is/was +一段时间+ since … It is three years since I met him in Beijing. It is a long time since I lived in that small mountain village with these farmers.It is five months since I arrived in New York. It is five months since I was in New York. 7.It will be+一段时间+ before …主句的时态可用一般将来时或一般过去时。It will be several years before we meet again. It was not long before they set out for the front. 8. It is /was/will be the first/second/third … time that … It is the first ti me that I have been here. It was the second time that he had seen the film. 9.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. 10. sb. hate/like/dislike/love/enjoy/resent/appreciate/don’t mind/be fond of/feel like/see to等+it+宾语从句。 I hate it that you can swim so well. I enjoy it when you help someone who is in trouble. 11. It takes sb. some time/ some money to do sth. It took him five years to draw a horse well. 12. 主语+vt.+it+n./adj.+to do sth. I think it hard for you to do the task on you own. 13. 主语+vt.+it+n./adj.+宾语从句。I think it important that you should attend the meeting.
it的用法及句型总结
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it 4，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。该事物既可以是可数名词也可以是不可数名词,必须要有后置定语,但不可以有前置修饰语。（特指，指代单数或不可数，指代物，后面有定语） The coffee produced in Brazil is more famous than __________in Mexico. 四：形式主语、宾语、强调句及其他
it用法归纳
it用法完全归纳 一、it 作人称代词的用法 1. 指事物 作为人称代词，it 可以除人以外的一切事物或动物。如： I dropped my watch and it broke. 我把手表掉在地上摔坏了。 It’s hard work, but I enjoy it. 工作很辛苦，可是我乐意干。 “Where is the dog?” “It’s in the bedroom. ” “狗在哪?”“在卧室里”。 2. 指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如： Is it a boy or a girl? 是男孩还是女孩? There is a knock on the door. It must be the postman. 有人在敲门，一定是邮递员。 【说明】在答语中，常用来指本人，如说It’s me。 3. 代替某些代词 代词it 还可用于代替指示代词this, that 以及复合不定代词something, anything, nothing等。如： “What’s this?” “It’s a new machine. ” “这是什么?”“是一种新机器”。 Nothing is wrong, is it? 没出什么问题，是吗? 二、it 作非人称代词的用法 1. 基本用法 it 作非人称代词的用法，主要用于指时间、距离、价值、天气、气候及温度等自然现象。如： It’s too late to go there now. 现在去那儿已经太迟了。 It rained all day yesterday. 昨天下了一天的雨。 It can get very hot here. 这里有时会很热。 2. 用于某些句型 It’s time for sth. 该做某事了。 It’s time to do sth. 该做某事的时候了。 It’s time for sb to do sth. 某人该干某事了。
高中英语语法权威解析二---“It”用法及其句型和固定搭配讲解(附练习题)
第二章“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. 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. +clause It'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 + clause It+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 (verb = appear, seem, come about, emerge, follow, chance, happen, occur, transpire, turn out , work out) 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.