It用法归纳学案Word版
Unit One: It 用法归纳学案
一、指代
1.用来指代上文提到的事物。
1）----Pass me your nose. ----- Here it is .
2）Whatever you do and say, ask yourself whether it is welcomed by others.
2. 表示时间，天气，距离，温度等。
1）It was cold yesterday.
2）It may be 25 kms from here to the town.
3）It was very quiet in the café.
3. 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。
1）Where's my left eye? Have you seen it?
2）The cat is in the garden, isn't it?
3）The baby cried because it is hungry.
4）(有人在敲门）Who is it?
4.表示谁在做某事的句子：
1）--- Who is it? ---It’s me.
2）Her face lighted when she saw who it was.
5.用来泛泛的指某件事：
1）It doesn’t matter.
2）It is a shame, isn’t it?
3）So you are going to be married this time？When is it？
★注意：it, one及that 作代词的用法区别
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。
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。
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,要有后置定语,但不可以有前置修饰语。
选择：1.The news that they failed their driving test upset him, ________?
A. did they
B. didn\‘t they
C. did it
D. didn\’t it
2.--Why don\‘t we have a little break?
--Didn\’t we just have________?
A. it
B. that
C. one
D. this
3. Few pleasures can equal to ________ of a cool drink on a hot day.
A. some
B. any
C. that
D. those
二、形式主语
1. It is necessary to be prepared for a job interview. Having the answers ready will be of great help.
2. It is known to everybody that the moon travels round the earth once every month. 句子: 由that 引导的主语从句有时为了使句子结构平衡, 避免“头重脚轻”, 常
用it 作形式主语, 而把从句放在后面。例如:
Ⅰ. That he will refuse this piece of advice is impossible.
__________________________________________________________________
Ⅱ.That they should like each other is natural.
__________________________________________________________________ 常用句型:
1) It is + n. +从句
It is a pity/shame that... 遗憾的是……
It is a surprise that…令人惊奇的是…
It is a fact that……是事实
It is common knowledge that……是常识
*_______________(很遗憾)we lost the match.
*______________(这是事实)he cheated in the exam.
2) It is + adj. +从句
It’s certain that…肯定…
It is possible that... 很可能……
It is unlikely that... 不可能……
It is obvious that…很明显…
It is necessary \important \natural\... that…
*_________________(很可能)she will come back tomorrow.
*_________________(很明显)this measure is effective.
3) It +不及物动词+从句
It happened that... 碰巧……
It occurred to me that…我突然想起…
It seems that…似乎…
It appears that…看来…
*________________(刚好)I came into the office at that time.
*____________________(我突然想起)I forget to send the letter.
4) It + be +过去分词+从句
It is said that... 据说……
It is known to all that... 众所周知……
It is reported that... 据报道……
It is believed that... 据信……;人们相信……
It is suggested that + (should）do... 建议……
It must be admitted that…必须承认……
It cannot be denied that…不可否认……
It must be pointed out that…需指出的是……
*___________________(据报道)20 people were killed in the accident.
*___________________(建议)we should eat more vegetable and do more exercise.
短语
1.It is adj ( for sb. ) to do sth.
important，necessary，natural ，impossible ，unusual ，rare ，easy ，hard ，difficult ，pleasant ， likely, right, wrong, clear, obvious, certain, 等。
2. It is adj ( of sb. ) to do sth.
good （好心的），nice（有教养的），polite，kind ，brave ，careless，honest ，modest ，wise ，clever ，thoughtful, careful, crazy，bad ，lazy ，rude ，cruel ，foolish ，silly ，stupid ，等。
3. It‘s no good/use doing…
It's (well)worth doing…
其他
1. It takes sb. ... to do sth. “做．．．要花费某人．．．”。
It took thousands of people many years to build the Great Wall.
2. It doesn’t matter whether ( if ) ... “不论（是否）．．．没关系．．．。
It doesn’t matter if they are old.
三、形式宾语
1.动词+ it + 形容词/名词+（for sb +）to do
+ that 从句
2.动词+ it + 形容词（important、necessary、natural、essential）+ that从（should）The chairman thought ___ necessary to invite Mr. Obama to visit Peking.
A. that
B. it
C. this
D. him
译：我认为你去参加这会议很重要。
3. 动词（accept, regard, take, see,）+ it+ as+ noun/adj. + 从句
4. 动词 +it + to sb. + that…
owe it to sb. that…把…归功于…
leave it to sb that…把…留给某人去做
take it for granted that 把…想当然
keep it in mind that…把…记在心里
例 1.Don't bother to tidy your room. Just leave it to me to do.
译，他想当然的以为女朋友会再回来。
5. 动词 +it + that
enjoy, like, love, dislike, appreciate，hate, don't mind, feel like,
see to / depend on /insist on
译： I hate it that you can dance so well but I can't.
6. 动词make +it+ a rule +that从句译：他习惯于天亮前起床。
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)
it用法的五类考点
it的五类考点和用法 一、考查 it 用作形式主语的用法 当不定式、动名词、从句等用作主语时，为避免头重脚轻，通常在句首使用形式主语it，而把真正的主语放在句子末尾。如： It’s no good sitting up too late. 熬夜没有好处。 It doesn’t matter what he says. 他说什么没关系。 【特别提醒】注意it用作形式主语的三类特殊句式： 1.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。 2.当系表结构后接有if 或when引出的状语从句时，通常在系表结构前使用形式主语表示说话人对某情况的看法。如： It was a great surprise to me when he did a thing like that. 他这样做使我很吃惊。 It would be a tragedy if anything went wrong. 如果出了什么事就是一个悲剧。 3.用于if it were not for… / if it hadn’t been for…(若不是因为)。如： If it hadn’t been for the freezing wind they could have reached the injured man in time. 要不是有刺骨的寒风，他们就及时赶到伤员身边了。 二、考查 it 用作形式宾语的用法 当不定式、动名词、从句等用作宾语且其后跟有宾语补足语时，就应在宾语补足语前使用形式宾语，而将真正的宾语移至句末： ~ We found it difficult to persuade her. 我们发现很难说服她。 He makes it a rule to get up before dawn. 他习惯于天亮前起床。 I think it very strange that he goes out walking almost every night. 我认为他几乎每晚都出去散步是很奇怪的。 【特别提醒】注意it用作形式宾语的三类特殊句式： 1. 动词+it+if / when从句 当enjoy, like, dislike, love, hate, prefer, appreciate等动词后需要接一个if或when引导的从句时，此时必须要先在动词后接it作形式宾语。如： She won’t like it if you arrive late. 她不喜欢你迟到。 He hates it when people use his bike. 他讨厌别人用他的自行车。 > 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，那就太好了。 I would appreciate it very much if you would help me with it. 如果你能帮助我做这事，我会十分感激。 2. 动词+介词+it+that从句能用于此句型的主要有三个动词，即depend on, answer for, see to。如： You may depend on it that he will turn up in time. 你可以相信他会及时赶到的。 I can’t answer for it that the boy is honest. 我不能保证这个男孩是诚实的。 I’ll see to it that all these letters will be sent to the post before twelve. 我将注意让所有的信件在12点以前送到邮局。 三、考查 it 在强调句中的用法 — 强调句的基本结构是：It+be+被强调部分+that(who)+其他部分。 如： 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。 【特别提醒】对于强调句的复习要特别注意两种情形： 当强调句有插入语或复杂修饰语时： It was lack of money, not of effort, that defeated their plan. 他们的计划受挫，原因是缺少钱而不是没有尽力。 It was more in sorrow than in anger that he criticized his former colleague. 他批评以前的同事，并非出于气愤而是为他惋惜。 2.当强调为特殊疑问句时： ！ Who was it that won the World Cup in 1982 谁赢得了1982年的世界杯 How long ago is it that you last saw her 你上一次看见她是多久以前的事 四、考查 it 与 one 的区别 两者均可代替前面提到的事物，区别是：it指的是与前面已提到的事物为同一物，此时的it等于“the (this, that, my...)+名词”；而one 指的是与前面已提到的事物为同一类物，此时的one 等于“a+名词”。比较 I have a dictionary but I’ve lent it to Mary. 我有一本词典，但把它借给玛丽了。 I haven’t a dictionary; can you lend me one 我没有词典，你能借我一本吗 五、考查 it 在习语中的用法 包括it的习语很多，比如make it就是其中很重要的一例。如： You can make it if you hurry. 如果你赶快还可以及时赶到。 ` You needn’t worry; he will make it. 你不必担心，他会办成的。 含有“It is …”的句型 一、it指代时间时，有如下一些句型： （1）It is time (for sb.) to do sth. It is (high/about) time that sb. should do / did sth.(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.
高中语法it的用法
it的用法 一、考点聚焦 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。[来源:学,科,网Z,X,X,K] —What’s this? —It’s a knife. —Whose watch is t hat? —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 w ith 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 n ight. 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）[来源:学科网ZXXK] 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、probab le、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 + …[来源:学科网ZXXK][来源:Z+xx+https://www.360docs.net/doc/cf13467704.html,] 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用法考点归纳
---------------------------------------------------------------最新资料推荐------------------------------------------------------ it用法考点归纳 it 用法考点归纳一、考点聚焦（一）、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。 Whats this? Its a knife. Whose watch is that? Its mine. 3. 起指示代词的作用，指一个人或事物。 Who is knocking at the door? Its me. 4. 指环境情况等。 It was very noisy (quiet) at the very moment. 5. 指时间、季节、天气、气候等。 What time is it? Its eight oclock. It often rains in summer here. 6. 指距离。 It is a long way to the school. 7. 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如： easy, difficult, hard, necessary, unne-cessary, possible, impossible, likely, unlikely, right, wrong, important, unimport-ant, legal, illegal, well-mannered, ill-mannered, 1 / 12
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
代词it的常考点
代词it的常考点 考点1.it作形式主语或宾语, 代指后面的不定式或动名词或句子 1.【2010全国2】The doctor thought _____ would be good for you to have a holiday. A. this B. that C. one D. it 2.【2007全国II】_____ felt funny watching myself on TV. A. One B. This C. It D. That 3.【2012 陕西】No matter where he is, he makes _____ a rule to go for a walk before breakfast. A. him B this C. that D. it 4.Why don’t you bring _____ to his attention that now students are bearing too heavy learning load? A. it B. this C. that D. what 5.You may depend on _____ that he will turn up in time. A. it B. me C. which D. them 6.Will you see to _____ that the luggage is brought back? A. me B. yourself C. it D. them 7.【2011山东】The two girls are so alike that strangers find ___ difficult to tell one from the other. A. it B. them C. her D. that 8.—I don’t know whether I should go abroad or not, Mum. — I leave _____ to your own judgment whether you should do it. A. that B. it C. this D. what 考点2.用于表达天气、环境、时间、距离、季节等 ①It’s half an hour’s walk from here to our school. (指距离) ②It’s nice and warm here. （指天气、气候） ③But it’s two o’clock now, and it’s time for us to go to school. （指时间） 9.They live on a busy main road. _____ must be very noisy. A. There B. It C. That D. They 考点3.不知性别,是婴儿常用it 10.Mary is expecting another baby and hopes _____ will be a boy. A. he B. that C. it D. there 考点4.it 用以指身份不明的人 it用以指身份不明的人。若指身份明确的人，则不宜用it。试比较： ①Mr. Smith is at the door. He wants to see you. ②Someone is at the door. It must be Mr. Smith.
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.
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。