[精选]it做形式主语的19个句型--资料
it做形式主语时的用法
it做形式主语时的用法It作为形式主语时，常常用于代替后面真实主语的从句、动名词或不定式，以避免句子结构显得过于复杂或者不平衡。
以下是It 作为形式主语的几种常见用法：1、It + be + 形容词 + that从句：这种句型中的形容词通常是表示性格、品质的形容词，如nice、kind、stupid等。
例如：It is kind of you to help me. 你真好，帮了我。
2、It + be + 名词 + that从句：这种句型中的名词通常是表示时间、距离、度量衡等概念的名词。
例如：It is five years since we last met. 我们上次见面已经五年了。
3、It + be + 介词短语/副词 + that从句：这种句型中的介词短语或副词通常用来描述地点、方式等。
例如：It is in this room that we had the party. 我们就是在这个房间里开派对的。
4、It + be + 动词的过去分词 + that从句：这种句型中的动词过去分词通常是表示完成的动词，如known、heard、seen等。
例如：It is said that he has gone abroad. 据说他已经出国了。
5、It + be + 不定式短语/动名词 + that从句：这种句型中的不定式短语或动名词通常用来描述将来的动作或一般性的情况。
例如：It is to study hard that he will succeed. 他只有努力学习才会成功。
需要注意的是，在It作为形式主语的句子中，真正的主语通常是一个从句或非谓语动词短语，这些从句或短语被放在句子的后面，以保持句子的平衡和流畅。
it用法大全形式宾语形式主语
2.非人称代词it
it有时并不指详细旳东西，而泛指天气、时间、环境等， 称为非人称旳it： 2.1.指天气： It is a lovely day, isn’t it? It is a bit windy.
2.2.指时间: It was nearly midnight when she came back.
用It作形式主语旳句型： (1) It is adj.＋ to do sth. It is difficult to translate this article.翻译这篇文章 极难。
(2) It is adj. ＋ for/of sb.＋ to do sth. It is important for us to learn English.学习英语对我 们很主要。
㈠ 1.it作人称代词
1.1.it旳最基本使用方法是作人称代词，主要指刚 提到 旳事物，以防止反复:
Ningbo is a beautiful city, isn’t it?
1.2.也能够指动物或婴儿(未知性别旳婴儿或孩子): Is this your dog？No, it isn’t.
1.3.也可指抽象事物: It was a great surprise to me when he did a thing like that．
2）.It is +v-ed +that 从句 ① It is said (reported， learned....) that ...
据说（据报道，据悉．．．）“。 It is said that he has come to Beijing.
= He is said to have come to Beijing.
②不论被强调部分是哪种状语，只能用 that连接，不得使用where、when等连词.
It作形式主语和形式宾语的用法
It作形式主语和形式宾语的用法It作形式主语和形式宾语的用法一、it作形式主语1.不定式作真正主语常用句式归纳：It is no use/good/need/help doing…做……没用处/没好处/没必要/没帮助； It is great fun doing做……非常有趣；It is a waste of time/money doing 做……简直是浪费时间/金钱的2.that从句作真正主语常用句式归纳：1）it+be+过去分词+that…It is argued that…大家争论……；It is assumed that…假定……；It is believed that…大家相信……；It is agreed that…大家同意……；It is hoped that…大家希望……；It is (well) known that…家喻户晓……；It is reported that…据报道……；It is recommended that…据推荐……；It is rumored that…谣传……；It is said that…据说……；It is suggested that…有人建议……；It is supposed that…大家推测……；It is thought that…大家认为……；It is taken for granted that………被视为当然It must be remembered that…务必记住……；It has been decided that…大家决定……。
2)it+be+形容词+that…It is clear/obvious that……很明显；It is important that…重要的是……；It is surprising that…令人惊讶的是…；It is necessary that……有必要；It is strange that………很奇怪；It is likely/possible that……很可能。
“it”作为形式主语的十大考点
“it”作为形式主语的十大考点1、It’s +形容词/名词+（for sb. / sth）+to do sth可以用于这类句型的形容词和名词以及例句如下：点击添加图片描述（最多60个字）2、It’s +形容词+of sb. +to do sth这个句型是同学们最容易丢分的，大家需要知道在这个句型中，形容词是描述人的品德、特征。
同学们看一下能用于这个句型的形容词和例句：点击添加图片描述（最多60个字）3、It’s +形容词/名词+doing sth在这个句型中，常见的形容词和名词有：no /little use, no /much good, useless等。
例如：It is no use crying over spilt milk.It is no good talking about other’s faults.4、It’s +形容词+that…能用于这个句型的形容词有：possible, important, impossible, necessary, strange, natural, surprising, obvious, true, likely, unusual等。
除了true, likely,obvious这三个词外，其他的词后面that从句一般要用虚拟语气，（should+动词原形）should可以省略。
大家看下面例句：点击添加图片描述（最多60个字）5、It’s +名词+that…在这个句型中，常用的名词有：fact, honor, belief, good thing / news, （no）wonder, no doubt, pity, shame等。
如例句1。
需要注意的是，在使用pity和shame的时候，从句一般用虚拟语气（should+动词原形），should可以省略。
意思是表示出乎意料“竟然”，如果没有这种意义的时候，就可以不用虚拟语气。
如例句2和3。
点击添加图片描述（最多60个字）6、It’s +及物动词的过去分词+that…这个句型中常见的及物动词的过去分词和例句如下：点击添加图片描述（最多60个字）7、It+不及物动词+that…能用于这个句型中的不及物动词常见的有：seem, happen, appear, matter等，例如：点击添加图片描述（最多60个字）8、It+及物动词+宾语+主语从句用于这类句型的动词有：affect, disappoint, impress, interest, worry等，例如：点击添加图片描述（最多60个字）9、It takes sb. + sometime to do sth.这个句型的意思是“花费某人多长时间做某事”例如：It took us half an hour to ride to the town by bike.10、It’s time (about time, high time ) +that…这个句型中that后面的从句要用虚拟语气，需要注意的是：常常用过去时态表示虚拟，有的时候也用should+动词原形，should不能省略。
it作形式主语的句型
it作形式主语的句型
1、It + be + 形容词 + that从句：表示某事物具有某个特征或属性。
例如：It is important that we arrive on time.（我们按时到达很重要。
）
2、It + be + 名词短语 + that从句：表示某个事物符合某个特征或属性。
例如：It is a shame that he didn’t come to the party.（他没来参加聚会真是遗憾。
）
3、It + be + 过去分词 + that从句：表示某个动作已经被完成或已经发生。
例如：It is said that the book will be published next month.（据说这本书将在下个月出版。
）
4、It + be + 现在分词 + that从句：表示某个动作正在进行或正在发生。
例如：It is raining hard outside.（外面正下着大雨。
）
5、It + be + 不定式短语 + that从句：表示某个动作将要发生或被计划。
例如：It is to be announced tomorrow if the meeting will be held as scheduled.（明天将宣布会议是否按计划举行。
）
这些句型中的“it”通常被称为“形式主语”，因为它在句子中充当主语，但实际上并不是真正的主语。
这种用法是为了使句子更加通顺或强调某种特定的信息。
it作形主的10种句型
it作形主的10种句型作为一种形容词，it在英语中的应用非常广泛。
在许多情况下，it都可以作为句子的主语，充当句子的主要组成部分。
以下是10种常见的it作为形主的句型。
1. It is important to +（动词原形）这种句型常见于讲述道理或建议的语境中。
例如：It is important to keep a positive attitude in life.生活中保持积极的态度非常重要。
It is important to study hard for e某ams.考试前认真学习很重要。
2. It is said that +（句子）这种句型用于引用公众所共知的谣言、传言或事实。
例如：It is said that she is the most beautiful girl in the school.据说她是学校里最美的女孩。
It is said that he will retire ne某t year.听说他明年将退休。
3. It is easy/hard to +（动词原形）这种句型用于形容某事情容易或困难。
例如：It is easy to learn a new language if you practice every day.如果每天练习，学习一门新的语言很容易。
It is hard to quit smoking, but it's worth it.戒烟很难，但是值得的。
4. It is (not) possible to +（动词原形）这种句型描述某些事情是否可能实现。
例如：It is not possible to see everything in one day at the museum.在博物馆一天内看完所有的东西是不可能的。
It is possible to travel to Mars in the future.在未来，去火星旅行是有可能的。
it做形式主语的19个句型
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 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 ...+(should) do 该句型和上一个同属一个句型。
It句型归纳最全总结
It句型归纳最全总结It句型归纳总结I。
It作形式主语的句型1.It is adj (kind。
wise。
careless。
XXX.) of sb to do sth.For example: It is wise of him to make such a XXX wise.2.It is adj (easy。
safe。
common。
normal。
) for sb to do sth.If adj is important。
necessary。
natural。
possible。
strange。
vital。
essential。
etc。
it can be changed to a clause。
and the clause should use should + verb.For example: It'XXX for children to play with fire。
Children playing with fire is very dangerous.It is important for us to learn English well。
It is importantthat we (should) learn English well.3.It is V-ed (reported。
believed。
said。
XXX.) that clause.In this sentence pattern。
if V-ed is reported。
believed。
said。
etc。
it is often translated as "据报道"。
"据认为"。
"据说"。
If V-ed is suggested。
ordered。
demanded。
insisted。
etc。
which means "suggested"。
it形式主语句型
“it”在英语中经常用作形式主语，尤其是在主语从句中。
形式主语用于表示主语从句，即一个句子作为主语，而“it”是这个句子的形式主语。
以下是几个使用“it”作为形式主语的常见句型：
1. It is + 形容词+ that + 主语从句
例如：It is clear that he has made a mistake.
解释：在这个句型中，“it”是形式主语，“that”后的句子是真正的主语。
2. It is + 名词+ that + 主语从句
例如：It is a fact that the earth is round.
解释：这个句型与上一个相似，但形容词被替换为名词。
3. It + 动词+ 主语从句
例如：It happened that he was late for the meeting.
解释：在这个句型中，“it”是形式主语，动词是主语从句的谓语。
4. It + be + 时间/距离+ before + 主语从句
例如：It will be two years before we meet again.
解释：这个句型用于表示在某个时间或距离之后会发生某事。
5. It is/was + 被强调部分+ that + 主语从句
例如：It was yesterday that he met his friend.
解释：这个句型用于强调某个时间或部分。
这些只是使用“it”作为形式主语的一些常见句型。
在英语中，还有其他更复杂或特定的用法。
It做形式主语句型整理大全
It做形式主语句型整理大全It 做形式主语句型整理大全形式主语句型是英语语法中常见的一种句型结构，其中“it”作为句子的形式主语，代替真正的主语，使得句子结构更加简洁和清晰。
本文将介绍常见的形式主语句型，并给出相应的例句说明。
1. It + be + 形容词 + (for/of somebody) + to do something这种句型用来描述某事或某物对某人具有某种特定属性或特征，强调主观情感或感受。
其中的“for/of somebody”是可选的，用来表示某人对这种特征的感受或看法。
例句：- It is important for us to take care of the environment.- It is easy to learn a new language if you practice every day.- It is common for teenagers to experience mood swings.2. It + be + 名词 + (for somebody) + to do something这种句型用来描述某事或某物对某人来说是合适或适当的。
例句：- It is a good idea for you to start exercising regularly.- It is essential for a student to manage their time effectively.- It is necessary for parents to spend quality time with their children.3. It + be + 形容词 + that + 句子这种句型用来描述某事或某物具有某种特定属性或特征，强调客观事实和真实性。
例句：- It is interesting that she decided to travel alone.- It is evident that the company is facing financial difficulties.- It is amazing that they managed to finish the project ahead of schedule.4. It + be + 名词 + that + 句子这种句型用来描述某人对某种情况或事实所持的看法、判断或观点。
it的句型归纳清单-高三英语一轮复习
It的句型归纳一、it 作形式主语的句型（is都可以换成was或其他变形）It is + adj. + that…1.It is obvious that……. 是显而易见的2.It is true that………是真实的3.It is natural that……..是自然的4.It is surprising that……..是令人惊讶的5.It is good that…….是好的6.It is wonderful that………是很棒的7.It is funny that……. 是有趣的8.It is certain that………..是肯定的9.It is probable that………可能的10.It is likely that………可能的11.It is possible that………可能的It is +名词+that…12.It is no wonder that.. 难怪…..13.It is an honor that…很荣幸….14.It is a good thing that…….是好事15.It is a pity that…很遗憾…..16.It is no surprise that…….不令人惊奇It is + 过去分词+ that….17.It is said that.. 据说…..18.It is reported that…据报道….19.It is thought that …普遍认为….20.It is expected that…期盼…..21.It is decided that.. 决定….22.It is announced that.. 宣布….23.It is arranged that…安排….It +动词或动词短语+ that…（所有加s都可以换成其他时态。
）24.It seems that…看起来…..25.It happens that…碰巧….26.It matters that…….关键；….起作用27.It appears that…看起来似乎….28.It turns out that…后来证明…；事实证明….29.It proves that…后来证明…；事实证明….30.It occurs that…碰巧….31.It seems as if…看起来似乎….32.It looks as if…看起来似乎….33.It looks as though…看起来好像….34.It occurs to sb. that…. 某人突然想起…..35.It es to sb. that…某人突然想出….36.It strikes sb. that.. 某人突然想出….37.It hits sb. that…某人突然想出….38.It is well known that…. 众所周知….39.It is well acknowledged that…众所周知….其他句型40.It is no use doing …做…没用41.It is useless doing sth…做…没用42.It is no good doing sth…做…没用43.It takes sb. some time to do sth…. 花费某人多少时间做…..44.It is high time that…是做…. 的时候45.It is the first time that…第一次做……46.It was the second time that…第二次做…..47.I t is +时间段+ since + 从句（一般过去时）自从….以来有多久48.It has been + 时间段+ since +从句（一般过去时）自从….以来有多久49.It + be + 时间段+ before+从句（时态遵守主将从现或前后一致）（肯定）过了多久才….（否定）没过多久就…50.It be + 被强调部分+that……51.It is + adj. + for sb. + to do sth…对某人来说做….怎么样52.It is + adj. + of sb. + to do sth…对某人来说做….怎么样二、it 作形式宾语的句型1.take it that…. 认为….；想…2.hate it when…. 讨厌….3.like it when…喜欢….4.can’t help it if…如果…,我也没办法5.appreciate it if…如果…将感激不尽6.I don’t mind it if…如果…我不介意7.see to it that…确保…;务必….8.count on it that…相信…..9.As someone puts it, ….. 像某人说的那样10.If you don’t feel like it, …. 如果不喜欢,就….11.When it es to….., ….. 当谈到…..12.主语+think/believe/ suppose/consider/feel/ make/keep/…. + it + useless/ nogood / no use….+ doing sth. 某人认为……没用13.主语+ think/believe/ suppose/consider/feel/ make/keep/…. + it + adj./ n. +for/of sb. + to do sth. 某人认为……怎样。
It句型归纳最全总结
资料收集于网络，如有侵权请联系网站删除It句型归纳总结I .It作形式主语的句型①It + be + adj (kind , wise , careless, clever …)+ of sb to do sthEg: It is wise of him to make such a decision.他做出这样的决定是明智的。
②It + be + adj(easy , safe , common , normal …)+ for sb to do sth该句型中adj 若为important, necessary, natural, possible, strange, vital, essential 等可改为从句，从句用should+动词原形。
.Eg: It' very dangerous for children to play with fire.It is important for us to learn English well. (= It is important that we (should) learn English well.)③It + be +V-ed( reported, believed, said, suggeste d…)+ that 从句该句型中：⑴若V-ed为reported, believed, said等常译为据报道”，据认为”，据说"。
⑵若V-ed为suggested, ordered, demanded, insisted等表示"建议”，"命令”的词，从句要用虚拟语气(should)+动词原形。
Eg: It is suggested that the book (should) be revised.It' said that Tom has been back from abroad. (=Tom is said to have been back from abroad.)④It + be + n (a pity, a shame, a fact , good new s …)+ that 从句：该句型中，从句一般用(should) +动词原形，表示出乎意料，常译为"竟然"。
主语从句it做形主例子
主语从句it做形主例子1. It's a real pity that you don't come with us. （哎呀，你不跟我们一起去，真的太可惜啦！就好像面对一桌美食却不能品尝一样可惜呀。
）2. It's so cool that he won the game. （哇塞，他赢得比赛也太酷了吧！这就像是在黑暗中突然看到了耀眼的光芒一样让人惊喜啊。
）3. It's amazing that she can dance so beautifully. （哇哦，她能跳得那么美，简直太惊人了！就如同看到蝴蝶在空中翩翩起舞那般惊艳。
）4. It really sucks that I failed the exam. （哎呀，我考试没通过，真是太糟糕啦！好比满心欢喜去摘果子却发现一个都没熟一样让人郁闷。
）5. It's a great thing that they got married. （他们结婚了呀，这可真是一件大好事！好像两颗漂泊的星星终于找到了彼此，组成了温暖的星系。
）6. It's crazy that he dares to do that. （他居然敢那样做，简直疯啦！这就像一只小绵羊突然冲向了大灰狼一样令人咋舌。
）7. It's wonderful that we had such a great time. （哇，我们度过了那么美好的时光，这可太棒啦！好比品尝到了世间最甜美的糖果一样让人开心。
）8. It's so funny that she made that joke. （哈哈，她开了那个玩笑，可太有意思啦！就如同听到了最有趣的段子一样让人忍俊不禁。
）9. It's a shame that I missed the party. （哎呀，我错过了那个派对，真是太遗憾了！就好像错过了一场超级豪华的盛宴一样让人懊悔。
it作形主语的五种
it作形主语的五种IT 作为形式主语的五种情况如下：1. 结构：It + be/have/do + 名词/代词+ 形容词/副词/动词-ing/动词过去分词等形式。
例子：-It is said that he is going to join our team.（据说他将要加入我们的团队。
）-It has been raining since morning.（自从早上就一直下雨。
）2. 结构：It + 动词过去分词+ 名词/代词+ 形容词/副词等形式。
例子：-It seemed like a good idea at the time.（当时看来这是一个好主意。
）-It occurred to me that we had met before.（我想起来我们之前见过面。
）3. 结构：It + 动词-ing + 名词/代词+ 介词+ 宾语等形式。
例子：-It's interesting to learn about different cultures.（了解不同的文化很有趣。
）-It's important to keep the environment clean.（保持环境整洁很重要。
）4. 结构：It + 动词-ing/动词过去分词+ 副词等形式。
例子：-It's been a long time since we last met.（自从我们上次见面已经过去很长时间了。
）-It doesn't matter if he doesn't know.（他不了解没关系。
）5. 结构：It + 动词-ing/动词过去分词+ 宾语等形式。
例子：-It happened that I knew the person involved.（碰巧我知道涉及的那个人。
）-It occurred to me that I hadleft my wallet at home.（我想起来我把钱包忘在家里了。
常用it作形式主语的句型结构
常用it作形式主语的句型结构◇It+be+形容词+that-从句可用于此句型的形容词有:wonderful,true，good，right，wrong，（un）important，useless，surprising，clear，unusual，lucky，certain,necessary等。
如：①It is quite certain that he will be at the meeting.②It is surprising that he came late to school this morning.③It is important that we(should)study hard注意:该句型中的形容词是（un）important,necessary等时，从句应为(should)+动词原形。
◇It+be+-ed分词+that-从句适用该句型的过去分词主要有:said,reported,announced,hoped,thought，told，believed，expected，decided，suggested,known等。
如：①It is hoped that one day they will have enough animals to set them free②It is well known that the earth goes around the sun.③It is suggested that the sports meeting(should)be put off until next week.注意:该句型的过去分词是suggested时，从句应为(should)+动词原形。
◇It+be+名词+that-从句适用该句型的名词（词组）有:a pity，an honor，a good thing，a fact，a surprise，good news, one’s duty等。
it做形式主语的例句
it做形式主语的例句1. It's really hard to believe that it takes so much time to fix a computer. Example: “You know, it's like a puzzle sometimes, trying to figure out what's wrong with this darn thing!”2. It seems so easy, but it actually isn't to learn a newpro gramming language. Example: “I thought it would be a piece of cake, but boy was I wrong!”3. It makes me crazy when it crashes in the middle of an important task. Example: “Oh man, it happened again! It really drives me nuts!”4. It's quite amazing how it can change our lives. Example: “Can you believe it? It's like it opened up a whole new world for us!”5. It really bugs me when it freezes all the time. Example: “Ugh, it's so annoying! Why does it keep doing that?”6. It's kind of funny how it always seems to know what I need. Example: “Haha, it's like it has a mind of its own sometimes!”7. It's really cool that it can do so many things. Example: “Wow, it's just so cool how it can handle all these tasks!”8. It drives me insane when it's so slow. Example: “Argh, it's so frustrating! It's driving me bloody insane!”9. It's sort of strange that it works the way it does. Example: “Huh, it's kind of strange, isn't it? How it operates like that.”10. It's really awesome how it keeps evolving. Example: “Isn't it great? It's like it's constantly getting better and better!”My view: IT plays such an important role in our lives, with both its conveniences and annoyances. It's a fascinating world that we can't help but interact with every day.。
it做形式主语的19个句型之欧阳数创编
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 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/possibl e/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 thathe'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 ...+(should) do该句型和上一个同属一个句型。
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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 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 ...+(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。
5. It is said (reported, learned…) that …
该句型中的it 仍是形式主语，真正主语是that 引导的主语从句。
该结构常译为“据说（据报道，据悉……）”。
6. It is suggested ( ordered, required ... ) that ... +(should) do
该句型和上一个同属一个句型。
主句中的过去分词是表示请求，建议，命令等词时，that 后的从句要用虚拟语气（should + 动词原形），should 可以省。
常译为“据建议；有命令……）”。
7. It is a pity ( a shame ... ) that ...
该句型中，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。
It is a pity that such a thing ( should ) happen in your class.
这种事竟然发生在你们班上，真是遗憾！
It is a pity that he is ill. 他生病了，真遗憾！
8. It is time ( about time , high time ) that ...
该句型中that 后的从句应该用虚拟语气，值得注意的是①常用过去时态表示虚拟．②有时也用should + 动词原形，should 不能省。
常译为“是（正是）……的时侯……”。
9. It is the first ( second … ) time that …
该句型要和上一个句型区别开来。
该句型中的that 从句不用虚拟语气，而用完成时态。
至于用什么完成时态，由主句的谓语动词的时态决定。
如果是一般现在时，后面从句用现在完成时态；如果是一般过去时，后面从句则用过去完成时态。
该结构中that 可以省去；it 有时用this 替换，常译为“是第一（二）……次……”。
It is the first time I have been here.
= This is the first time I have been here.
10. It is …since ...
该句型主要用作处理瞬间动词的完成时，又要和表示一段时间的时间状语连用的问题。
主句中是时间作表语，其时态是现在时或完成时，since 引导的从句通常是一般过去时态，而且是瞬间动词。
如果主句是一般过去时，从句则用过去完成时。
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……”。
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……”。
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……
14. It takes sb. …to do sth.
该句型中的不定式是真正的主语，it是形式主语，句型中的直接宾语是时间。
常译为“做……要花费某人……”。
15. It is no good (use ) doing sth.
该句型中的真正主语是动名词短语，主句中的表语可以是no good , ( not any good ) , no use , ( not any use )。
16. It doesn't matter whether ( if ) ...
该句型中whether (if) 引导的从句是真正主语，该句型常译为“不论（是否）……没关系……。
17. It is kind ( of sb. ) to do sth.
该句型中的不定式短语是真正主语，如果不定式的逻辑主语是由of 引起，主句中的形容词必须是能表示逻辑主语特征的形容词。
常见的有: bad, brave, careless, clever, cruel, foolish, good (好心的), honest, horrible, kind, lazy, modest, naughty, nice (有教养的), polite, rude, silly, stupid, wise, wrong (错误的)等。
这个句型可以改写为：sb. is kind to do sth.
It is kind of you to say so. = You are kind to say so.
18. It is necessary ( for sb. ) to do sth.
该句型与上一个同属一个句型。
如果不定式的逻辑主语是由for 引起，主句中的形容词通常是表示重要性，紧迫性，频繁程度，难易，安全等情况的形容词。
常见的形容词有：
①important, necessary, natural
②easy, safe, common, normal, hard, difficult, dangerous, unusual, rare, impossible, pleasant 等。
在①中的形容词作表语可以用从句改写，如：
It is important for her to come to the party.
= It is important that she (should ) come to the party
19. It looks ( seems ) as if ...。