It 做形式主语

I t做形式主语句型整理大全-CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIANIt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。

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（important, impolite.necessary. easy, difficult.....）+ 动词不定式(to do sth..........)It is impolite to keep others waiting.It is important to arrive on time.2. It + be + 形容词(important, impolite.necessary. easy, difficult....).+主语从句，如：It is important that you must arrive on time..2. In fact is a hard job for the police to keep order in an important football match. (2001 上海)A. thisB. thatC. thereD. it3. 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. They8. ___________ is known to all that Shenzhou VI LaunchedSuccessfully.A. AsB. 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。

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。

1.It is/was +被强调部分+ that /who ...该句型是强调句型。

被强调部分可以是主语，宾语，表语或状语。

强调的主语如果是人， that 可以由who 换用。

如果把这种句型结构划掉后，应该是一个完整无缺的句子。

这也是判断强调句型与其它从句的方法。

2. It is not until +被强调部分+ that ...该句型也是强调句型。

主要用于强凋时间状语，译成汉语“直到??才??”，可以说是 not ...until ... 的强调形式。

It was not until she took off her dark glassesthat I realized she was a famous film star.= Not until she took off her dark glasses didI realize she was a famous film star.= I didn't realize she was a famous film star until she took off her dark glasses.3. It is clear /obvious/true/possible/certain ? that?该句型中 it 是形式主语，真正的主语是 that 引导的主语从句，常译为“清楚（显然，真的，肯定??）”是主语从句最常见的一种结构。

It is very clear that he's round and tall like atree.= That he's round and tall like a tree is very clear.4.It is important/necessary/ right/strange/natural... that ...+(should) do该句型和上一个同属一个句型。

由于主句中的形容词不同，that 后的从句中要用虚拟语气（ should+ 动词原形）， should 可以省去。

中考英语it作形式主语
在中考英语中，it作为形式主语的情况非常常见。

形式主语指代的是一个动词不定式、一个从句或一个名词性从句，而它本身并不是句子的主语，只是用作语法结构上的替代品。

以下是一些常见的
it作为形式主语的例子：
1. It is important to study hard if you want to succeed in life. （如果你想在生活中获得成功，努力学习很重要。

）
2. It seems that the weather is getting colder these days. （这些天天气似乎越来越冷了。

）
3. It is believed that regular exercise can improve your health. （人们相信定期运动可以改善你的健康。

）
4. It was a great pleasure to meet you yesterday. （昨天见到你非常愉快。

）
在以上例句中，it作为形式主语并不是句子的核心，但它的存在使句子更加完整、结构更加清晰。

因此，在中考英语中，掌握it 作为形式主语的用法对于理解和运用英语语法是非常重要的。

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I t做形式主语句型大全 GE GROUP system office room 【GEIHUA16H-GEIHUA GEIHUA8Q8-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。

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 + 名词+从句It is no secret that the president wants to have a second term at office.It's a pity/shame that…（should）………竟然……（2）It is 形容词+clause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。

1.It is/was +被强调部分+ that/who ... 该句型是强调句型。

被强调部分可以是主语，宾语，表语或状语。

强调的主语如果是人，that可以由who换用。

如果把这种句型结构划掉后，应该是一个完整无缺的句子。

这也是判断强调句型与其它从句的方法。

2. It is not until +被强调部分+ that ...该句型也是强调句型。

主要用于强凋时间状语，译成汉语“直到……才……”，可以说是not ...until ...的强调形式。

It was not until she took off her dark glassesthat I realized she was a famous film star.= Not until she took off her dark glasses did Irealize she was a famous film star.=I didn“t realize she was a famous film staruntil she took off her dark glasses.3.It is clear /obvious/true/possible/certain…that …该句型中it是形式主语，真正的主语是that引导的主语从句，常译为“清晰（显然，真的，肯定……）”是主语从句最多见的一种结构。

It is very clear that he“s round and tall like atree.=That he“s round and tall like a tree is veryclear.4.It is important /necessary/right/strange/natural... that ...+(should) do该句型和上一个同属一个句型。

由于主句中的形容词例外，that后的从句中要用虚拟语气（should+动词原形），should可以省去。

it做形式主语形式主语指的是在动名词或者名词性从句做主语时，为了避免主语太长而导致整个句子头重脚轻的情况而用在句首的it，真正的主语（即动名词或名词性从句）则放至句末。

这样就能够保证整个句子形式上的美感。

动名词做主语时it做形式主语动名词to do和doing做主语时it做形式主语主要有以下几种常见句式：(1) it + be + noun + (for sb) to do sth能够满足这个句式的常见名词有：idea, pity, pleasure等。

例句1：It's a hard work for the traffic police to direct traffic in such a hot weather.在如此炎热的天气指挥交通对于交警来说十分艰难。

例句2：It's a good idea to go for an outing in Spring.在春天出去郊游是个好主意。

例句3：It's a pity to miss the biggest automobile exhibition.错过那次最大的车展真遗憾。

(2) it + be + adj + (for sb) to do sth能够满足这个句式的常见形容词有：easy, hard, difficult, necessary, important, possible 等。

例句1：It's necessary to be punctual. 守时很有必要。

例句2：It's difficult for a little kid to totally understand your words.让一个小孩完全理解你的话很难。

例句3：It's common for leaves to fall from the tree in autumn.秋天树叶飘落是普遍现象。

(3) it + be + no good/use/sence.... + doing sth例句1：It's no use complaining about your terrible surroundings.抱怨你周边的恶劣环境是没有用的。

it作主语的用法IT作主语的用法在英语中，IT是一个非常常见的代词，它通常用来指代事物或概念。

在句子中，IT可以被用作主语，从而起到引导整个句子的作用。

本文将详细介绍IT作主语的用法。

一、基本用法1. IT + BE动词最基本的IT作主语的用法是与BE动词连用。

这种结构通常表示某种状态或情况。

例如：It is raining outside.（外面正在下雨。

）It was nice to meet you.（很高兴见到你。

）It will be a busy day tomorrow.（明天会很忙碌。

）2. IT + 动词不定式当IT作为形式主语时，后面跟着一个动词不定式，通常表示期望、计划或建议等。

例如：It is important to study hard.（努力学习很重要。

）It is necessary to finish the project on time.（按时完成项目是必要的。

）It is better to ask for help when you need it.（需要帮助时最好寻求帮助。

）3. IT + 名词/形容词/副词从句当IT作为形式主语时，后面跟着一个名词、形容词或副词从句，通常表示某种情况或状态。

例如：It is a fact that smoking is harmful to health.（吸烟对健康有害是事实。

）It is clear that he doesn't want to talk about it.（显然他不想讨论这个问题。

）It is likely that she will come to the party tonight.（她很可能会来参加今晚的聚会。

）二、进阶用法1. IT + 句子IT作为主语时，后面可以跟一个完整的句子。

这种结构通常表示一种情况或状态。

例如：It seems that he is not interested in the job.（看起来他对这份工作不感兴趣。