（完整版）it做形式主语用法大全含练习及答案
it作形式主语和形式宾语练习.docx
浅谈it作形式主语和形式宾语用法一、It用作形式主语当不定式（短语）、动名词（短语）或从句在某个句子中作主语时，为保持句子结构前后平衡，避免头重脚轻，因此常用it作形式主语置于句首，而将真正的主语放在句尾。
此时it只起先行引导作用，本身无词义。
e.g. It is wrong to tell a lie.（说谎是错误的。
）〔It 为to tell a lie 的形式主语）It is no use arguing about it.（争吵是没用的。
）（Il 为arguing about it 的形式主语）It is uncertain who will come.（谁要来还不确定。
）（It 为who will come 的形式主语）It作形式主语的常见句型：①It + be+ 形容词 + to do sth. / doing / that....e.g. It is very important to learn a foreign language・It is useless crying over the spilt milk・（覆水难H攵。
）It was really surprising that she married a man like that.②It + be 4-名词词组+ doing / that....e.g. It is no good telling lies.（撒谎没好处。
）It is a pity that you didn^t go to see the film yesterday・③It + be +过去分词+ that....该句型常见动词冇：say, hope, think, suppose, expect, report, know, believe, decide, etc.e.g. It is said that they have invented a new type of computer.It is believed that China will become one of the strongest countries in the world・It was reported that more than 170 thousand people died in the 2004 tsunami.④It + seems / appears / happens 等不及物动词+ that....e.g・ Il seems that he enjoys pop songs very much・It appears that Tom might change his mind.⑤若句子是疑问形式，就只能用it作形式主语。
(完整版)it做形式主语用法大全含练习及问题详解
It作形式主语常见句型动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：1. It + be + 形容词+主语从句，如：It is uncertain whether he can come to Jenny’s birthday party or not.2. It + be + 名词词组+ 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question 等，如：It’s a pity that you missed the exciting football match.It remains a question whether he will come or not.3. It + be + 过去分词+ 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等，如：It is reported that 16 people were killed in the earthquake.It is not decided who will give the operation to the patient.4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等，如：It seemed that he didn’t tell the truth.It happened that I was out when he called.5. It + be + 形容词+ for sb.）+ 动词不定式这类句型常用形容词easy, difficult, hard, important, possible，wise等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，如：It’s necessary for the young to master two foreign language.It is unwise to give the children whatever they want.这类形容词有：easy, difficult, hard, important, possible，wise6. It + be + 形容词+ of sb. + 动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。
高考英语专题it用法习题及答案
高考英语专题之it的用法1.指代上文提到过的某物。
2.指代this和that。
3.指不知性别的婴儿或身份不明确的人。
4.指时间、距离、天气、气候、温度、日期或价值。
5.it代替不定式、动名词短语或名词性从句做形式主语。
（1）It is+adj.for /of sb. to do sth.（2）It is no wonder that...……不足为奇/并不奇怪（3）It seems/appears that...似乎/看来……（4）It looks/seems as if/as though...看起来/似乎/好像……（5）It happens that...碰巧……（6）It occurs to/comes to/strikes/hits sb. that...某人突然想起……（7）It is said/reported that...据说/据报道……（8）It is certain that...肯定……（9）It is well known/acknowledged that...众所周知……（10）It is no use/no good doing sth.做某事没用/没好处（11）It takes sb. some time to do sth.做某事花某人一些时间（12).It is clear (obvious, true, possible, certain) that….“清楚（显然、真的、肯定）”（13).It is important (necessary, right, strange, natural…) that…（虚拟should+动词原形）（14).It is suggested (ordered…) that…（虚拟should+动词原形）（16）. It doesn’t matter whether………不重要，没关系(17).It is a pity/shame that...真可惜……6.it做形式宾语（1）主语+think/believe/suppose/consider/feel/make/keep...+it+adj./n.+for/of+sb.to do sth./that从句（2）主语+think/believe/suppose/consider/feel/make/keep...+it+unless/no use/no good...doing sth.7.其他与it相关的常用短语和句型(1)I take it that you don't agree with me.我想你不同意我的意见。
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. +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(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.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) 某动作已有多长时间不发生了例It's 10 years that 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。
（完整word版）It用法练习题及答案
（完整word版）It用法练习题及答案It的用法It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。
其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。
一、要点点拔1．代替上文中提到过的人或事物。
指代人时，一般用于小孩或身份不十分明朗的人。
1) －Who is the baby?－It‘s my teacher’s son．2) －Who is that gentleman?－It's my friend Tom．He(不可用It) wants to see you．2．用于表达天气、环境、时间、距离、季节等。
例如：1) It’s half an hour’s walk from here to our school．2) It‘s nice and warm here．3) But it's two o'clock now, and it's time for us to go to school．3．用作形式主语.it 没有具体意义，而只是帮助把真正的主语移至句子后尾，使句子显得平稳一些，能借it 给移至句子后尾的主语有三种：一种由不定式表示，一种由动名词表示，一种由从句表示。
1).It 替代真正的主语——动词不定式短语.It is easier to say than to do .It is a good act to help the others.2).it 替代真正的主语——动名词短语,以动名词短语做主语的句子，主要在以no good, no use, no harm, dangerous, foolish 等词作表语的句中.It’s no harm drinking running water in that area。
It’s foolish talking like that.3).it 替代从句作主语，用从句做主语的带it 的句子很多,常见的有下面几类：①It is a pity (a shame ,a fact ,a wonder ,a good thing,etc. )that…It is a shame that he didn’t pass the exam.②It is strange ( surprising,obvious ,true, good,possible,clear,etc. ) that…。
七年级英语It 作形式主语练习30题含答案解析
七年级英语It 作形式主语练习30题含答案解析1. _______ difficult for me to play the piano well in a short time.A. It isB. This isC. That isD. I'm答案解析：A。
在这个句子中，It作形式主语，真正的主语是后面的“to play the piano well in a short time”，这种结构是“It is + adj. + (for sb.) to do sth.”，表示做某事对某人来说是怎么样的。
选项B“This is”和选项C“That is”没有这种用法，不能作形式主语。
选项D“I'm”表示“我是”，不符合句子结构和语义。
2. _______ a lot of time to go to school on foot every day.A. It takes meB. It spends meC. I takeD. I spend答案解析：A。
这里考查“It takes sb. some time to do sth.”这个句型，It作形式主语，表示花费某人多少时间做某事。
选项B中“spend”的主语应该是人，用法是“sb. spend some time (in) doing sth.”，所以该选项错误。
选项C和D的主语是I，不符合这个句型的结构要求。
3. _______ important to keep our classroom clean.A. ItB. ThatC. ThisD. They答案解析：A。
此句运用的是“It is + adj. + to do sth.”结构，It作形式主语，真正的主语是“to keep our classroom clean”。
选项B“That”、选项C“This”和选项D“They”都不能在这种结构中作形式主语。
4. _______ interesting for my sister to draw pictures.A. It'sB. ItsC. That'sD. She's答案解析：A。
It用法练习题及答案
It的用法It的用法在高考中也是重现率较高的语言点，尤其是it用于强调句。
其考查方式多通过“单项填空”进行，偶尔也出现在“短文改错”和“完形填空”中。
一、要点点拔1．代替上文中提到过的人或事物。
指代人时，一般用于小孩或身份不十分明朗的人。
1) －Who is the baby?－It‘s my teacher’s son．2) －Who is that gentleman?－It's my friend Tom．He(不可用It) wants to see you．2．用于表达天气、环境、时间、距离、季节等。
例如：1) It’s half an hour’s walk from here to our school．2) It‘s nice and warm here．3) But it's two o'clock now, and it's time for us to go to school．3．用作形式主语.it 没有具体意义，而只是帮助把真正的主语移至句子后尾，使句子显得平稳一些，能借it 给移至句子后尾的主语有三种：一种由不定式表示，一种由动名词表示，一种由从句表示。
1).It 替代真正的主语——动词不定式短语.It is easier to say than to do .It is a good act to help the others.2).it 替代真正的主语——动名词短语,以动名词短语做主语的句子，主要在以no good, no use, no harm, dangerous, foolish 等词作表语的句中.It’s no harm drinking running water in that area。
It’s foolish talking like that.3).it 替代从句作主语，用从句做主语的带it 的句子很多,常见的有下面几类：①It is a pity (a shame ,a fact ,a wonder ,a good thing,etc. )that…It is a shame that he didn’t pass the exam.②It is strange ( surprising,obvious ,true, good,possible,clear,etc. ) that…。
it的用法和练习(带答案)
重点代词it的用法和练习(含答案)(1)it用做人称代词的用法it用作代词，意为“它”，既可以指人，也可以指物。
it做人称代词，可以用来代替一个名词、短语、从句或句子，以避免他们在句中的重复。
这是可以指提到过的，也可以指未提到的，在句中做主语、表语和宾语。
1) 指事物，it可以知道除人以外的任何事物或动物。
I dropped my watch and it broke.我把手表掉在地上摔坏了。
2) 指人，it主用用于指性别不明的婴儿或只听其声不见其人的人，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.“Liste n. Some one is cryin g.. ”“Oh, it must be Mary. ”3) 代替某些代词。
代词it可以用于代替指示代词this, that以及复合不定代词something, anything, nothing等，如：“What' s this?”“ It' s a new machine”(2)it用作非人称代词的用法1) it用作非人称代词主要用来指时间、距离、价值、天气、气温及温度等自然现象。
如It' s too late to go there now.现在去那已经太迟了。
It rained all day yesterday昨天下了一整天雨。
2) 用于某些句型。
It' s time for sth.该做某事了。
It' s to do sth.是时候该做某事了。
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，有时候用should+ 动词原形)It' s first(second)time +that--从句。
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（完整版）it做形式主语用法大全含练习及答案It作形式主语常见句型动词不定式，动名词或主语从句作主语时，通常把它们放在谓语动词前，而用it作形式主语，放到句首，常见句型有：1. It + be + 形容词+主语从句，如：It is uncertain whether he can come to Jenny’s birthday party or not.2. It + be + 名词词组+ 主语从句，这类名词有：a fact, a pity, a shame, an honour，a question 等，如：It’s a pity that you missed the exciting football match.It remains a question whether he will come or not.3. It + be + 过去分词+ 主语从句，这类过去分词有：announced, believed, expected, hoped, decided, reported, said, shown等，如：It is reported that 16 people were killed in the earthquake.It is not decided who will give the operation to the patient.4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有：appear, happen, seem等，如：It seemed that h e didn’t tell the truth.It happened that I was out when he called.5. It + be + 形容词+ for sb.）+ 动词不定式这类句型常用形容词easy, difficult, hard, important, possible，wise等作表语，有时候为了强调不定式动作的执行者，常在不定式前加for sb，如：It’s necessary for the young to master two foreign language.It is unwise to give the children whatever they want.这类形容词有：easy, difficult, hard, important, possible，wise6. It + be + 形容词+ of sb. + 动词不定式，这类形容词常是表示心理品质,性格特征的形容词，如：kind, nice stupid, clever, foolish,polite, impolite, silly, selfish, considerate等。
某人和这些形容词可以构成主系表结构。
如：It’s very kind of you to help me with the work.=You are kind to help me.It seemed selfish of him not to share his dictionary with others.=He seemed selfish not to share his dictionary with others.7. It + be +名词词组+ 动词不定式，如：It is not a good habit to stay up too late.8. It + be + 名词或形容词+ 动名词，这类名词和形容词常常是：good, no good, no use, a waste of, useless, senseless等，如：It’s a waste of time talking to her any more.It is no use arguing about the matter with him.9. It + take ( sb. )+ 时间（金钱）+ 动词不定式，如：It took the workers almost three years to finish building the dam.It will take a whole day to get to the top of the mountain on foot.实战演练：1. It is generally considered unwise to give a child he or she wants. (NMET 1997)A. howeverB. whateverC. whicheverD. whenever2. In fact is a hard job for the police to keep order in an important football match. (2001 上海)A. thisB. thatC. there3. is a fact that English is being accepted as an international language. (NMET1995)A. ThereB. ThisC. ThatD. It4. Is necessary to take off our shoes when we enter the lab? (MET88)A. everyoneB. thisC. herD. it5. ________ will take you a lot of time to find him in the crowd.A. ItB. IC. WeD. They6. It is no use his _________ there, the situation is hopeless now.A. to goB. to be goingC. goingD. having gone7. It is never too late to learn, ________?A. is itB. isn’t itC. does itD. doesn’t it8. ___________ is known to all that Shenzhou VI Launched Successfully.B. WhatC. ItD. That9. _______ is reported in the newspaper, the Earthquake in east China's Jiangxi Province killed 13 peopleA. ItB. AsC. ThatD. What10. ___________ certain that his invention will make people’s life convenient.A. That’sB. This isC. It’sD. What’s11. _________ that there is another football match on the air this evening.A. It saysB. It was saidC. It is saidD. What was said12. __________ that their daughter got an opportunity to study abroad.A. It’s a exciting newsB. This is an exciting newsC. This is exiting newsD. It’s exciting news参考答案：1——5 BDDDA 6——10CACAC 11——12CD㈠ it作形式主语：it作形式主语时没有具体的意义，而只是帮助把真正的主语移到句子后部去，使句子显得平稳一些。
it作形式主语时，可以代替三种形式：不定式、动名词和主语从句。
⒈it代替不定式短语常用于下列句型中：It + be +形容词+ (for/of sb.) to do sth.It + be + 名词+ to do sth.It takes sb. some time to do sth. 干…花了某人…时间It’s up to sb. to do sth. 干…是某人的职责或义务①It is everyone’s duty to obey the law.遵守法律是每个人的义务。
（it作形式主语, 代替不定式短语to obey the law）②It is difficult for a foreigner to learn Chinese.对于一个外国人来说，学习汉语是困难的。
（it作形式主语, 代替不定式短语to learn Chinese）③It is not right to use these places as rubbish dumps.把这些地方用来倒垃圾是不对的。
（it作形式主语, 代替不定式短语to use these places as rubbish dumps）④It took them a year to build the bridge.建这座桥花了他们一年的时间。
（it作形式主语, 代替不定式短语to build the bridge）◆It be + 形容词+ for sb. to do sth.与It be + 形容词+of sb. to do sth.：如果句型中的形容词描述的是sb.的品质、品格，在逻辑上可以作sb.的表语，则sb.前应用介词of，否则就用for。
①It’s necessary for us to use a short-wave radio to pick up the programmes.我们用一台短波收音机收听这些节目是必要的。
③It’s kind of you to help me.感谢你对我的帮助。
（= You are kind to help me. ）④It was foolish of him to give up the job.他放弃那工作是愚蠢的。
（= He was foolish to give up the job⒉it代替动名词短语：动名词作主语用后置形式的情况远不及不定式那么普遍，常限于no good, no use, useless, waste等词的后面。
①It is no good/ use having a car if you can’t drive.如果你不会开车，有车也没用。
( it作形式主语,代替动名词短语having a car)②It is a waste of time watching TV.看电视是浪费时间。