高三复习之it用法归纳
it的用法归纳
it的用法归纳
1. 代词：it可以代替前面出现过的事物、物品、动物等，做主语、
宾语、表语等。
例句：I saw a bird in the tree. It was singing beautifully. （我看见了一只鸟在树上。
它唱得很美。
）。
2. 指示代词：it也可以作为指示代词，用来指代某一事物或物品。
例句：I want this book, not that one. Give me it.（我想要这
本书，不是那本。
给我它。
）。
3. 不定式：it可以作为不定式的形式，表示“它”的含义，一般表
示时间、天气等。
例句：It’s nice to see you again.（很高兴再次见到你。
）。
4. 表示真理或存在：it可以用来表示某件事或事物的存在或真相。
5. 表示强调：it可以作为强调句的主语，强调句子中重要的信息。
例句：It was him who broke the vase, not me.（是他打破了花瓶，不是我。
）。
6. 虚主语：it可以作为虚主语出现在句首，表示无人称、无性别的
动作或状态。
高中英语语法——It的用法
高中英语It的用法一、代词It1.用作人称代词，代替上文出现的同一个事物，既可以指代可数名词，也可以指代不可数名词, 其复数形式是them。
如：---Have you seen my pen? ---Yes, it’s in the desk.★ it可以指人，多指婴儿或指身份不明的人（通常是只闻其声，不见其人时）。
例如: ---Who is knocking at the door? ---It must be Tom.★ it与one和that的区别：one指代单数可数名词，泛指同类事物中的一个；其复数形式是ones，泛指一些。
如：I prefer a flat in east district to one in west district.that用来替代前面提到的特指事物，既可以指代单数可数名词，也可以指代不可数名词。
代替单数可数名词可以用the one替代。
其复数形式是those,指代复数名词，表特指。
如：The weather here is not so good as that there.The days in summer are longer than those in winter.2. it用以代替指示代词this和thatA：Whose umbrella is that?B：It’s Mary’s.3. it用作非人称代词，表示时间、日期、地点、天气、温度、距离、环境等。
It’s a beautiful day.It’s time for the meeting.课堂练习1. Tom's mother kept telling him that he should work harder, but ____didn't help.A. heB. whichC. sheD. it2. We’ve been looking at the houses but haven’t found ____ we like yet.A. oneB. onesC. itD. them3. The Parkers bought a new house but ____ will need a lot of work before they can move in.A. theyB. itC. oneD. which4. I was disappointed with the film. I had expected ________to be much better.A. thatB. thisC. oneD. it5. ---Do you like ___ here?---Oh, yes. The air, the weather, the way of life. Everything is so nice.A. thisB. theseC. thatD. it6. We need a new cupboard for the kitchen. So Peter made ____ from some wood we had.A. itB. oneC. himselfD. another答案：DABDDB二、引导词it1. it用作形式主语It is uncertain whether he can come to Jenny’s birthday party or not.It’s a pity that you missed the exciting football match.It remains a question whether he will come or not.It is reported that 16 people were killed in the earthquake.It happened that I was out when he called.It’s necessary for the young to master two foreign language.It is no use arguing about the matter with him.2. it用作形式宾语动词+形式宾语+宾语补足语+真正的宾语。
高考英语it-的基本用法
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tha）＂ 是主语从句最常见的一种结 构。 It is very clear that he’s round and tall like a tree. = That he’s round and tall like a tree is very clear.
11. It is ... when ...。 该句型中的 when 引导的是一个时间状语从句，主句中的 it 指 时间，表语由具体的时间充当，常译为＂当．．．的时候， 是．．．＂ It was 5 o’clock when he came here. 12. It be ... before ... 该句型主句中的 it 指时间， 主句中的时态常是将来一般时或过 去时两种时态．主句中的表语多是long， not long ， 3 days ， 2 weeks 等表示时间段的词或短语，常译为＂．．．之 后．．．＂。 It was 3 days before he went to Beijing. It will be not long before he finishes his job. 13. It happens (seems， looks， appears ) that... 该句型中it是形式主语，that 引导的是主语从句，主句中的 happen ， seem等词是不及物动词。 It happened ( so happened ) that he met his teacher in the street. 碰巧．．. It seems that he will be back in a few days. 看来．．．
高中英语it的用法的归纳总结
高中英语it的用法的归纳总结以下是关于 it 的用法的一些归纳总结:1. 当 it 作为形式主语时，常用动词不定式或名词形式充当主语，其后面通常会加上 for 或 to 引导的短语。
例如：- It"s important to study hard.(努力学习很重要。
)- It"s a beautiful day.(今天天气很好。
)- It"s difficult to imagine a better place to live.(无法想象一个更适合居住的地方。
)2. 当 it 作为形式宾语时，通常用不定式或名词形式充当宾语，并在其后加上 for 或 to 引导的短语。
例如：- I appreciate your help.(感谢你的帮助。
)- It"s a great opportunity for me to learn new skills.(这是一个我学习新技能的好机会。
)- It"s necessary to clean the room.(打扫房间有必要。
)3. 当 it 作为实义主语时，表示某一具体事物或人物。
例如： - It"s a beautiful day, isn"t it?(今天天气很好，是吗？) - It"s yours, isn"t it?(这是你的吗？)4. 当 it 作为强调句的结构时，通常位于句首，其后是句子的主要成分。
例如：- I don"t know who it was that called me yesterday.(我不知道昨天是谁给我打电话。
)- It was yesterday that I visited my grandmother.(昨天我去看望了我奶奶。
)5. 当 it 作为单数名词时，通常指某一类人或物中的一个。
例如：- It"s a police car.(这是一辆警车。
高考英语考点 15 It的用法
考点十五It的用法it作为代词用法非常灵活，可用于代替上文中提到的事物，代替上文中说到的一件事，代替不知情的人（尤其是不知身份、性别和姓名的人）。
也可用于表示时间、天气、距离、计算结果等。
还可用来代替不定式、动名词、从句等，充当形式主语或形式宾语。
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，在句子中既可以作主语，也可以作宾语。
1. 指动物和植物。
☞ Look at that bird. It always comes to my window. 看看那只鸟。
它总是飞到我的窗前来。
2. 指代无生命的东西。
☞This is my watch. It’s made in Switzerland. 这是我的手表。
它是瑞士产的。
3. 代替上文提到过的整个事情。
☞Well, you mustn’t play on the road. It’s dangerous! 哦，你不能在马路上玩。
这是危险的！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。
☞—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。
☞—Look, someone is coming. Who can it be? ——看，有人过来了。
他可能是谁呢？—It may be the headmaster. ——可能是校长。
3. 在回答用指示代词表示人的特殊问句时，常用it指人。
☞—Who’s that? ——那人是谁？—Is it Helen? ——是海伦吗？—Yes, I think you’re right. It’s Helen. ——是的，我想你说对了，是海伦。
三、用于指时间、距离和自然现象等1. 表示时间。
☞—What’s the date? ——今天是几月几日？—It’s the third of March. ——今天是3月3日。
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。
高三 高中It用法总结归纳
个性化教案学科：高中英语课时计划：2 课时年级：高三课题：高中英语It用法总结归纳学生姓名：教师姓名：陈莉教学目标总结归纳并掌握高中英语It用法教学重点总结归纳并掌握运用高中英语It用法教学难点掌握运用高中英语It用法授课类型归纳总结课教学过程教师活动It用法总结归纳一、人称代词1，it的最基本用法是作代词，主要指刚提到的事物，以避免重复:①They watched the train until it disappeared in the distance.2.，也可以指动物或婴儿(未知性别的婴儿或孩子):②Is this your dog？No, it isn’t.③They got a baby and it was a ten-pounder3.，也可指抽象事物或指抽象环境和情景:③I hate it when people talk with a full mouth.．二、.非人称代词1.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：⑴.指天气：It is a lovely day, isn’t it?⑵.指时间: It was nearly midnight when she came back.⑶.指日期:It is April First today.⑷.指距离:It is some 3000 kilometers from Beijing to Guangzhou.⑸.指价值:It is three dollars.⑹.指温度:Today it is 30 degrees centigrade.三、其他用法1.在句子的主语不太明确时充当主语，表示谁在做某事：①Who is it there? It's I (me/you/he.....).②I thought it was Mary, but it was not she.③Her face lighted when she saw who it was.2.泛泛的指某件事：(有时泛指一般情况)①It doesn’t matter.１②It is a shame, isn’t it?③How is it going?(情况怎样)④It says in the newspaper that......3.it用在一些词组中，it 没有特别的意思The last train's gone. Come on, we'll foot it.(来，咱们步行吧。
高中英语语法知识之It的用法总结
高考英语语法知识之It 的用法总结1．It is + 被强调部分 + that ...该句型是强调句型。
将被强调的部分放在前面，其它部分置于that之后。
被强调部分可以是主语，宾语，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。
It was they that (who) cleaned the classroom yesterday. It was in the street that I met her father.2．It was 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 glasses that I realized she was a famous film star.= Not until she took off her dark glasses did I 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 a tree.= That he’s round and tall like a tree is very clear.4. It is important ( necessary, right, strange, natural...) that ...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。
高中阶段It常用句型解析及运用
高中阶段It常用句型解析及运用一、It作形式主语1.It 代替不定式，常用于以下结构：It+ be+ adj./ n. +( for sb )to do sth;It+ be+ adj. +of sb to do sthIt takes +sb+一段时间+ to do①It is important for us to master a foreign language.对于我们来说，掌握一门外语是十分重要的。
②It is very kind of you to help me with my English.你帮我学英语，真是太好了。
③It will take about two days to drive to Shanghai.开车去上海大约要两天的时间。
2.It代替动名词，常用于以下句型中：It is no use doing sth. 做……没有用。
It is no good doing sth. 做……没好处It is fun doing sth. 做……有趣①It’s no use crying over spilt milk.覆水难收。
②It’s no good eating some fast food.吃快餐是没有好处的。
③It’s great fun jumping into the swimming pool in summer.夏天跳进游泳池里游泳是件有趣的事。
3.It代替that从句，常用于以下句型中：It be +adj./ n. +that从句It be +过去分词+ that 从句It seems / appears / happens / turns out that 从句It ourred to sb+ that从句①I don’t know the restaurant, but it’s said that it’s quite a good one.我不知道这家饭馆，但听说相当不错。
高中英语it用法总结
高中英语it用法总结
it可用作人称代词、指示代词、先行词及引导词等。
可代表前文已提到过的一件事物。
用作指示代词时，常用来指人。
用作虚词时无指代性。
人称代词it，是第三人称单数中性
代表前文已提到过的一件事物。
当说话者不清楚或无必要知道说话对象的性别时，也可用it来表示。
it可用来指代团体。
扩展资料
it用以代替指示代词this, that。
指示代词it，常用以指人。
虚义it无指代性，常用作没有具体意义的主语，出现于表示天气、气候、温度、时间、地点、距离等意义的句子中。
it也常用来表示一般的笼统的情况。
It的用法及句型总结
It的用法及句型总结"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，如前文中的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 on e's while doing/to do…It's (well)worth while doing/ to do例: It's no use crying over spilt milk（覆水难收）.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/conc ern/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) 某动作持续了多长时间例: It's 10 years since 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。
高考英语：it的用法
2）真实主语是主语从句。常见句型如下： a. It + be +名词+主语从句。如：
It is a great pity (that) he can't swim. It was no accident (that) such a book (should) appear in the 18th century. It was a puzzle whether he should get married. It was a mystery how the thieves got in.
from a store kman that Alice bought from a store last week. （强调宾语a walkman）
③It was from a store that Alice bought a Walkman last week. （强调地点状语from a store）
4. 强调句型用于特殊疑问句，被强调的通常 是疑问词。
注意：此强调句型不能强调谓语动词。若需 强调谓语动词，常用“助动词do / does / did + 动词原形”。
四、一些含it的固定句型 As someone puts it, ... 像某人所说的那样，…… Please see to it that ... 请务必…… When it comes to ... 当提到……时 It looks / seems as if ... 看起来好像…… It's time for sth. 该做某事了
it用法总结(高三总复习)
It is two weeks since I saw him
• It’s + 时间段 +It'sstienncyeea.r自s be从for…e I g…rad有uat一ed.段时间了。 • It’s + 时间段It+'s tbeneyfoearres .th过at I多've 长lived的he时re f间or 才… it’s=it was • It‘s + 时间段It w+astthean ty.ea…rs a多go 久whe了n I graduated • It's + 时间段 + when ...是.在某个时刻
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
.
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
高中英语it的用法的归纳总结
高中英语it的用法的归纳总结1. it 作为人称代词在句子中代替一个名词或代词，作为主语、宾语、表语或形式宾语等。
例句：It is raining heavily.The book is interesting. I love it.I find it difficult to understand.2. it 作为代词形式的宾语用在像 think, believe, find, consider, call 等动词后面，作为宾语，这些动词有时常被称为“感觉类动词”。
例句：I find it hard to believe that he would do such a thing.They called it a day and went back home.I consider it a waste of time to keep trying.3. it 作为形式宾语用在像 make, find, see, hear, feel 等动词后面，表示动作的对象。
例句：They made it clear that they would not accept the offer.I find it interesting to learn new things.I saw it with my own eyes.4. it 作为虚拟主语或虚拟宾语用在像 suggest, insist, demand, prefer 等动词后面，表示虚拟语气。
例句：The boss suggested that it would be better to start the project next month.She insisted that it was her right to make the decision.I demand that it be done as soon as possible.5. it 作为强调的主语或宾语用在像 be, have 等动词后面，表示强调。
it用法总结(高三总复习)
利用在线作业平台实现作业 的实时批改和反馈
利用虚拟现实技术进行模拟 考试和实验操作训练
利用信息技术促进学生自主学习的案例
利用在线学习平台如Khn cdemy、Courser等提供丰富的学习资源 让学生自主选择学习内容。
利用智能学习工具如Quizlet、nki等帮助学生进行复习和记忆。
利用社交媒体如Fcebook、Twitter等建立学习小组让学生互相交流 和学习。 利用虚拟现实技术如Google Expeditions、Oculus Rift等让学生 身临其境地体验学习内容。
优势：提高学 习效率节省时
间
局限性：过度 依赖可能导致 学习效果下降
合理利用：结 合传统学习方 法避免过度依
赖
注意事项：选 择合适的IT工 具避免习中的实际案例分 析
利用信息技术提高课堂效率的案例
利用多媒体技术进行教学如PPT、视频等使教学内容更加生动、直观。
利用网络资源进行学习如网络课程、在线题库等方便学生自主学习。
高三总复习中的IT 用法总结
单击此处添加副标题
汇报人：
目录
添加目录项标题 IT用法的常见类型 IT用法的优势和局限性 如何提升高三师生的IT用 法能力
IT用法的概念和重要性
IT用法在高三总复习中的 应用场景
IT用法在高三总复习中的 实际案例分析
01
添加章节标题
02
IT用法的概念和重 要性
什么是IT用法
组织信息技术竞 赛激发学生的学 习兴趣和积极性
提供实践机会让 学生在实际操作 中提高信息技术 能力
加强教师信息技 术培训提高教师 的信息技术教学 水平
加强学校的信息技术设施建设和维护
硬件设施：更新计算机、投影仪等设备确保其性能稳定 软件设施：安装最新版本的操作系统和教学软件提高教学效率 网络环境：优化校园网络提高网络速度和稳定性 培训和指导：定期组织教师进行信息技术培训提高其使用能力 维护和更新：定期对信息技术设施进行维护和更新确保其正常运行
高三英语it的用法
It 用于代替指示代词， It 可以表示“是谁（在某处或做某事）” “Who’s that?” “It’s me.” It’s your mother on the phone. “Why, it’s you!” she cried. It还可以用来泛指某件事。 Isn’t it awful! It doesn’t matter. it 有时并不指具体东西，而指天气、时间、环境、距离 等，称为非人称代词it.It’s raining. It’s Tuesday today. It’s quiet here. It’s two miles to the beach.
形式宾语it:
it 可以代表不定式： eg: She found it difficult to convince him. Eg2: He felt it his duty to take care of them. It 代表that引导的从句： eg: I took it for granted (that) you would be coming. It间或代表连接代（副）词引导的从句： Eg: He hasn’t made it clear when he is coming back. Eg2: They haven’t made it known where the meeting is to take place.
身形，他有着紧缩的酷似豆荚模样的肩膀，肩膀下面是瘦小的酷似谷穗模样的手臂，他破烂的紫宝石色平锅模样的手掌确实相当风流而寒酸，很大的墨
灰色茄子模样的手指好像绝无仅有的正点新奇。他不大的酷似玉葱模样的腿确实相当与众不同稀有，平常的酷似猩猩模样的脚感觉空前有趣却又透着一
丝讲究，他摇晃的酷似海参模样的屁股显得极为秀雅但又有些典雅！腰间一条，瘦小的亮白色弯月模样的腰带认为很是精妙但又带着几分耀眼。这个怪
it用法归纳与总结
it用法归纳与总结
1. IT可以作为名词使用，表示信息技术（Information Technology），也可以指代IT行业或IT部门。
例如：I work
in IT.（我在IT行业工作）
2. IT可以作为代词使用，表示指示事物、情况或观点。
例如：
I don't understand it.（我不明白它）
3. IT可以作为形容词使用，表示指示事物或情况与信息技术
相关。
例如：IT industry（IT行业）
4. IT可以作为副词使用，表示指示方式、情况或程度。
例如：He did it quickly.（他做得很快）
5. IT可以与其他词组合成固定搭配，表示特定意义。
例如：
IT infrastructure（IT基础设施）、IT skills（IT技能）
总结起来，IT通常作为名词使用，表示信息技术，同时也可
根据上下文的不同作为代词、形容词或副词使用。
在IT领域，常用的短语和搭配也有特定的含义。
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高三复习之it用法归纳（一）. it用作代词1. 代替前面提到的事物或事件。
“Where is the dog?”----It’s in the bedroom.I am sending you some advice. It might help you.He was late again. It made the teacher angry.2. 指人。
it指性别不明的婴儿或身份不确定的某人。
如：“Who is that?”----“It is me.”There is a knock on the door.----It must be the postman.3. 代替this, that或某些不定代词something, anything, nothing等。
如：What’s this?----It’s a new machine.Nothing is wrong, is it?4. it 作非人称代词的用法，主要用于指时间、日期、距离、天气、地点及温度等。
如：It is sunny today. It is Friday today.It’s 6 miles to the nearest hospital.It is very warm in the house. （二）. it用作形式主语当不定式、动名词、从句等作句子主语时，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：1. It + be + adj + for (of) sb to do sthof 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”It is hard for him to make up his mind.It is foolish of her to say such a thing.2. It is no good \ no use\ useless\ a waste of time + doing sth 做什么是没有用的\浪费时间In my opinion, it’s no use arguing with him.3. It +be + adj +主语从句…形容词有：obvious\ clear\amazing\ certain\ possible\true等。
形容词是:important\strange\necessary\essential等，主语从句中谓语动词用虚拟语气：(should )+ doIt is obvious that your painting is better than mine.It is necessary that we (should ) drink 500ml water every day.4. It +be + n +主语从句\to do…这是。
名词有：a pity\a shame\ a fact\ an honor\ no wonder\ one’ duty…It is a pity that he failed in the driving test again.5. It is + v-ed+主语从句…据说\报道\认为\建议。
动词过去分词有：said\ reported\ thought\ believed\ known\ announced\expected\acknowledged…注意①：It is suggested\recommended\ordered\commanded\required…that+( should) doIt is strongly recommended that effective measures should be taken to ban smoking.It is widely acknowledged that …. 这是公认的。
②句型的转换：It is said that Bell invented the telephone.Bell is said to have invented the telephone.Linda is said to be interviewing the famous star now.6. It is likely that… = Sb be likely to do\have done\to be doing 。
是可能的。
It is likely that the MH370 plane will be found one day.The MH370 plane is likely to be found one day.7. It struck\hit\occurred to sb that…某人突然想起。
It occurred to me that he had an important conference to attend the next morning8. It looks \seems\appears\ happens + that \ as if+从句… 这看似好像。
It seemed as though he didn’t recognize me.9. It turns out/turned out that…结果是。
证明是。
It turned out that he was right.10. It doesn’t\ didn’t make any difference \ made no difference (to sb) +主语从句…。
对某人来说（没）有影响、意义、作用、区别It makes no difference to me whether you will come or not.11. It doesn’t make sense to sb +主语从句…某人不懂\不明白。
It made no sense to me what you said.（三）. it用作形式宾语当不定式、动名词、从句等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：1.sb think\ believe\find\consider\feel\make…+ it + adj\n + to do \ doing\ that从句During his lecture, the scientist found it easy to explain the theory to the students.He makes it a rule that some gifts are given to his family after business.2.I would appreciate \ enjoy\ love\ like\ dislike \ hate it if you …I would appreciate it if you would like to teach me how to use the computer.I hate it when somebody speaks with mouthful.3. make it clear that…弄清楚4.depend on it that…相信，指望。
5.see to it that…确保，一定注意到6.take it for granted that…认为。
是理所当然的7.owe it to sb that…把。
归功于某人（四）. It 构成的关于时间的特殊句型1. It is the first\second\last… time that sb + have\has done 某人第几次干某事It was the first\second\last… time that sb + had doneIt is the first time that I have seen a 3D film.2. It’s (about / high) time + that sb + should do\ did 某人该做某事了It is high time that we should take \ took some measures to protect our earth.3. It was\ will be + 时间段+ before…过了多久才。
It wasn’t\ won’t\+ 时间段+ before…没过多久就。
It didn’t \ won’t take long before…没过多久就。
注意before 的翻译：It was two years before they met each other again.4. It takes\ took sb + 时间段+ to do sth. 某人做某事花了。
时间。
It takes years to master a new language.5. It is \has been + 时间段+ since+一般过去时自从。
有多长时间了。
It is\ has been two years since he graduated from school.6. It is\ was + 具体时间点+ when…当。
的时候是。
I still remember it was two years ago when I first worked as a volunteer.（五）. 强调句型：It is\was＋被强调部分＋that(who)＋其他该句型应注意以下几点：1. 时态。
强调句型中is\was的时态要和句子的时态保持一致。
2. 强调主语时要注意that后谓语动词单复数一致。
3. 强调not until时that 后不用倒装。
4. 特殊疑问句：Wh- is\was it that +其他?若为名词性从句时要把疑问语序变为陈述语序：wh- it is\was that①练习对此句中除谓语之外各个成分进行强调：Tom found the cat under the desk yesterday.②It is your efforts, not your intelligence, __________________ your success. (determine)决定你成功的是你的努力，而不是你的智力。
③It was not until he reached his office ________________the keys were gone. (find)直到他到办公室，他才发现钥匙不见了。