It的几个特殊句型
it用作形式宾语的四个特殊句式
it用作形式宾语的四个特殊句式?当不定式、动名词、从句等复杂成分用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it，而将真正的宾语移至句末，此时it仍只起先行引导作用，本身无词义。
其基本结构为“动词+it+宾语补足语+不定式(动名词或从句)”。
如：Ifinditdifficulttodothejobwell.我发现做好这件事不容易。
Ithinkitbestthatyoushouldstayhere.我认为你最好住这儿。
Wethinkitnousecomplaining.Hemakesitarulenevertoborrowmoney.Ithinkitnoneedtalkingaboutitwiththem.Hefeltitimportant?tolearn?Englishwell.能这样用的动词有：为"6123结构"。
6指主句中常用的动词：123考点）：1.动词据传闻，国防部长不久就要辞职。
等。
2.动词like,enjoy,love,hate，Wereallyappreciateitwhensheofferedtohelp.她来帮忙了，我们十分感激。
I’dpreferitifIdidn’thavetodo somuchwork.要是我不必做那么多工作，好就太好了。
3.动词+prep+it+that-从句。
that引导的宾语从句不能直接作介词的宾语。
如：Seetoitthatyou’renotlateagain.注意千万不要再迟到。
Looktoitthatthisdoesn’thappenagain.注意不要再发生这种事。
Ican’tanswerforitthathewillcome.我不能保证他会来。
Youmayrelyonitthathe’llcometomeetyou.你放心，他会来接你的。
Youmaydependonitthatweshallalwayshelpyou.（尽管放心，我们会随时帮你的。
it做主语的句型
IT 作为主语的句子类型主要包括以下几种：1. 一般陈述句：例如：IT is a beautiful day.（今天是个美好的一天。
）2. 疑问句：例如：What about IT?（怎么样？）3. 否定句：例如：IT isn't working.（它没在运作。
）4. 祈使句：例如：IT needs fixing.（它需要修理。
）5. 感叹句：例如：How amazing IT is!（多么惊人啊！）6. 一般疑问句：例如：Does IT work?（它运作吗？）7. 特殊疑问句：例如：Which IT do you mean?（你指的是哪个？）8. 选择疑问句：例如：Do you want IT or that one?（你要哪一个，这个还是那个？）9. 被动句：例如：IT is being repaired.（它正在被修理。
）10. 宾语从句：例如：I think IT is a good idea.（我认为这是个好主意。
）11. 状语从句：例如：However IT happens, we should be prepared. （无论怎样，我们都应该做好准备。
）12. 名词性从句：例如：IT is obvious that he is talented.（他很天赋。
）13. 条件句：例如：If IT rains, we will stay indoors.（如果下雨，我们就在室内活动。
）14. 虚拟语气：例如：What would IT be like if IT were summer? （如果现在是夏天，它会是什么样子？）15. 比较级和最高级：例如：IT is the best solution.（这是最好的解决方案。
）16. 倍数表达：例如：IT costs twice as much as that.（它的价格是那个的两倍。
）17. 并列句：例如：IT rains and snows simultaneously.（雨和雪同时下。
it的特殊用法
it的特殊用法作者：inQ老师来源：本站原创适用年级：初中英语适用单元：全部一般情况下，it表示人以外的动物和东西，是单数名词的代词。
今天我们来说下it的一些特殊用法。
1、代指婴儿或照片、图画上的人物Look at the baby.It is asleep.看那个婴儿。
它在睡觉。
2、it作形式宾语：主语+动词+it+宾补+doing/to do sth在这个句型中，动词通常是consider, make, find, feel, think等。
当宾补是no good, no use ,useless 时，真正宾语须用动名词（也就是doing形式）；其他情况用动词不定式。
如：I think it no use telling him this matter.我认为没有必要告诉他这件事情。
They find it necessary to learn to be polite.他们发现学会讲礼貌很有必要。
3、用于引导强调句型It is/was+强调的部分+that/who/…It was not until she took off her dark glasses that I realized she was a famous film star.她摘下墨镜我才认出她是一个著名的电影明星。
It was on Sunday night that all this happened.所有这一切都是在星期日晚上发生的。
4、表示时间、季节、天气、距离、价格、重量It's six o'clock. 六点钟了。
It's winter now. 现在是冬天了。
It's rainy today.今天下雨了。
How far is it from school to your home? 学校到你家有多远？—How much is it?—多少钱？—It's five yuan.—五元钱。
it的9个常用特殊句型
含it的9个常用特殊句型1. It appears/ happens/ seems/ says that…It seems that he is always correct. 他好像总是对的。
It happened that I had no money with me. 碰巧我当时没有带钱。
2. It is said/ reported/ believed/ understood that…It is said that he has joined the Party. 据说他已经入党了。
3. It doesn’t matter…It doesn’t matter what he says. 他说什么都没关系。
4. (It is) no wonder( that) …It’s no wonder he is not hungry; he has been eating sweets all day. 难怪他不饿，他整天在吃糖果。
5.It is a waste of time /money doing sth.It’s a waste of time your talking to him. 你和他谈是浪费时间。
6. It makes no/mush difference…It’s doesn’t make much difference my being there. 我在不在那儿没有什么影响。
7. it takes sb. some time to do sth.It took me nearly an hour to work out the problem. 花了我差不多一个钟才做出那道题.8. It’s one’s turn to do sth.It’s my turn to clean the classroom. 是轮到我打扫教室的了。
9.If it were not for…If it were not for your help, I would still be homeless. 若不是你帮忙，我现在还是无家可归。
It 句型归纳
It 句型归纳1．It is ＋adj．(＋for sb．／sth．) ＋ to do sth．用于此句型的形容词有：easy，hard，difficult，possible，important，impossible，necessary，good，bad，exciting, interesting，surprising等。
如：It is necessary to change your job．It was very hard for them to walk such a long way in the snow．2．It is ＋n．(＋for sb．／sth．) ＋ to do sth．用于此句型的名词有： pity, shame, pleasure, one's duty, one's job, fun, joy, good manners, bad manners等。
如：It is a pity for you to have missed such a wonderful play．错过如此精彩的表演太可惜了It is bad manners for the young to take up the seats for the old．占据老年人的座位这件事是不好的行为3．It is ＋adj．＋of sb．＋to do sth．此句型中的形容词主要描述某人的品德、特征。
能用于该句型的形容词有：kind, nice, wise, silly, polite, impolite, friendly, foolish, clever等。
如：How silly it was of you to give up such a good chance！放弃如此好的机会，真是太傻了It is friendly of the family to try to make me feel at home in their house．这一家人太友好了，让我感觉到了自己家似的4． It is ＋adj．（＋n．）＋doing sth．此句型中的形容词和名词常见的有：no／little use, no／much good, useless 等。
有关it 的几个特殊句型
有关it 的几个特殊句型（1）owe it to sb. that…把…归功于…I owe it to you that I finished my work in time.亏你帮忙，我才及时完成了工作。
（2）take it for granted that…理所当然…I take it for granted that they will support this idea.我认为他们会支持这个提议是理所当然的。
（3）keep it in mind that …It must be kept in mind that there is no secret of success but hard work一定要记住的是成功的秘密是努力的工作。
（4）It can be seen from the statistics that …从这个统计可以看出…I t can be seen form the statistics that exercise is good for us.从这个统计可以看出，练习对我们是有好处的。
（5）it 用在不能直接跟宾语从句的动词后面，尤其是表示好恶的动词后，enjoy ,like ,love ,dislike ,resent ,hate ,don’t mind ,be fond of ,feel like ,see to ,appreciate ,stand 宾语从句紧跟it 之后。
I hate it you can swim so well and I can’t.我嫉妒你游泳那么好，而我不能。
I would appreciate it if you call me back this evening.如果你今晚上给我回电话，我会非常感激。
I can’t stand it when people talk with their mouth full.我无法忍受别人说话的时候满嘴食物。
It句型用法详解
It句型用法详解研究1991-2005年的高考试卷中可以发现含it的句型年年考到。
可见it句型的重要性和使用的普遍性。
现根据其用法特点归纳为２０个句型．1. It +be + 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，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。
It was about 600 years ago that the first clock with a face and an hour hand was made.It was they that (who ) cleaned the classroom yesterday.It was in the street that I met her father.It was neither you nor he that is willing to go to the Great Wall．It was he as well as his classmates who has ever been to Suzhou．(强调含有either．．．or．．．，neither．．．nor．．．，not only．．．but also．．．，as wellas，not．．．but．．．等词组所构成的句子)强调句型还可以怎样设计？这种提法并不是要把我们弄糊涂，而是要培养我们对该句型的应变能力。
万变不离其宗，要对强调句型产生免疫力，就要对该句型各种可能的考法烂熟于心。
下面我们谈谈强调句的考法设计。
1.1.疑问法：疑问法可分为一般疑问法和特殊疑问法两种。
主要是通过改变语序后将it和that混在一块儿，使考生对结构无法辨认而出错。
这形式可考查考生的纠错能力。
一般疑问句：①. Is _______ student_______ was caught smoking in the classroom?A. it that, thatB. that it, itC. it it, thatD. it which, that特殊疑问句：②. _______ he got up?A. When was that itB. Was it when thatC. When was it thatD. Was that when it③. Where________ he picked the wallet?④. _______ student________ you referred to?结论：一要注意语序；二要注意词序（特殊疑问词要置于句首），三要注意特殊疑问词的选用，疑问代词还是疑问副词。
容易混淆的it的句型
3 It is/was+时间名词+when… (时间状语从句) 当我们到家时已是1点了. It was one o’clock when he got home. 4 It is/was +时间状语+that…(强调句) 我们是在1点回家的. It was at one o’clock that he got home. 5 It is the first time (that)… 我第一次到这来. It is the first time that I have been here. 6 It is time that….did/should do… 现在该是我们开始上课的时候了. It is time we began our class now.
容易混淆的it的句型归纳:
1 It is/has been+时间名词＋since ...did (时间状语从 句） 自从 … 以来,已是… 2 It is＋时间名词＋before… (时间状语从句） 要过…才… 3 It is/was+时间名词+when… 时间状语从句 当…时 4 It is/was +时间状语+that…(强调句) 5 It is the first time (that)…. 第一次… 6 It is time（ that）….did/should do… (定语从句） 该是… him in chess yesterday. It was the first time____ that I had won the game. that 8.Isn’t it time _____we took immediate action to fight against pollution now. 9.It is the very room ______I where used to study. that I used to study. 10.It was in the very room ____ that 11.It was at almost midnight ____he fell asleep. 12.It was almost midnight______ when he finished the work.
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句型归纳总结大全
it句型归纳总结大全"it"句型是英语中常见的一种句型结构，通常用来强调或者指代特定的事物或情况。
下面是对"it"句型的归纳总结：1. 强调句型：It is (was) + 被强调的部分 + that/who + 其余部分。
例，It is the book that I want to read.（我想读的就是这本书。
）。
例，It was Mary who broke the window.（打破窗户的是玛丽。
）。
2. 虚主语句型：It + be + 形容词 + to do.例，It is important to learn English well.（学好英语很重要。
）。
3. 虚宾句型：It + be + 名词 + to do.例，I find it a pleasure to work with you.（我觉得和你一起工作很愉快。
）。
4. 指代句型：It + be + 形容词 + (for sb.) + to do sth.例，It is easy for me to solve the problem.（对我来说解决这个问题很容易。
）。
5. 天气句型：It + be + adj. + (for sb.) + to do sth.例，It is hot for us to go out.（对我们来说出去很热。
）。
6. 距离句型：It + be + 距离 + to + 地点。
例，It is five kilometers to the station.（离车站还有五公里。
）。
以上是对"it"句型的归纳总结，希望对你有所帮助。
如果你还有其他问题，欢迎继续提问。
It 的 13 个常用句型及其运用!书面表达必备!
It 的13 个常用句型及其运用！书面表达必备！It 的13 个常用句型及其运用it 虽然并不显眼，但只要运用得当，也能在书面表达中发挥出巨大的作用，给人以高大上的感觉。
本文在归纳其常用的句式结构的基础上着眼于在书面表达中如何恰当地运用it 的相关句型，以达到优化句子，增加文章亮点。
01一、it 句型的归纳：( 一) it 作形式主语的 6 个句型句型1. It is + adj. (=of n.) + for sb. to do sth. / that... 某人做某事是……的。
Will it be convenient for you to start work tomorrow? 你明天开始工作方便吗?It is vital /of great significance for students to take regular exercise. = It is vital /of great significance that students should take regular exercise. 定期进行锻炼这对学生来说太重要了。
句型2. It is a shame / pity that... 很遗憾……(1) It is a shame that some students should scribble and litterrandomly on the campus. 一些学生竟然在校园中乱涂乱画，乱扔垃圾，这真是太不应该了。
(2) It is a pity that I cannot go to see the movie on Saturday evening. 很遗憾，周六晚上我没办法陪您去看电影了。
说明： that 引导的从句为主语从句，从句中谓语动词的语气分两种情况：①表述的内容是事实，用陈述语气 , 如例句 (2) ；②若内容表明说话人的一种语气 / 情感则使用虚拟语气 , 如例句 (1) 。
It构成的几个易混淆的句型
It构成的几个易混淆的句型一、It+be+时间+since引导的状语从句这个句型表示从since 从句谓语动作发生以后到现在或过去所经过的一段时间，意为“自从……以来已多久了”。
表示现在的情况时，主句多用一般现在时，从句多用一般过去时；表示过去的情况时，主句用一般过去时，从句用过去完成时。
如：It is three years since his father passed away.自从他父亲去世已经三年了。
It was 10 years since they had married.自从他们结婚已经十年了。
二、It+be+时间+before引导的状语从句这个句型中的时间一般为表示一段时间的词语，如some time, long, years, months, weeks, days, hours, minutes等。
主句中的谓语动词用肯定式时，意为“过多长时间才……”；用否定式时，意为“没过多长时间就……”。
主句的时态可用过去时was或将来时will be/be going to be：用was 时，before从句的动词用一般过去时；用will be 时，before从句常用一般现在时。
如：It was some time before I realized the truth.过了一段时间我才了解到真相。
It wasn’t long before he told us about this affair.没过多久他就告诉了我们这件事情。
It will be many years before the situation improves.这种状况要过许多年才能得到改善。
三、It+be+时间+when引导的状语从句这个句型中, it 指时间，而且表示时间的词语前没有介词(时间一般为具体时间)。
主句中的谓语动词和从句中的谓语动词在时态上一般是一致的，但是当主句是will be时，when 从句一般用一般现在时代替将来时。
It的用法(超全)
---------------------------------------------------------------最新资料推荐------------------------------------------------------It的用法(超全)用法及其句型和固定搭配，是英语语法的重点、难点，又是近几年考试的热点，因此在复习中应给予足够的重视。
句型归纳：1． It is ＋adj．(＋for sb．／sth．) ＋ to do sth．用于此句型的形容词有：easy， hard， difficult，possible， important， impossible，necessary， good， bad， exciting， interesting， surprising 等。
如：It is necessary to change your job． It was very hard for them to walk such a long way in the snow． 2．It is ＋n．(＋for sb．／sth．) ＋ to do sth．用于此句型的名词有：pity, shame, pleasure, ones duty, ones job, fun, joy, good manners, bad manners 等。
如：It is a pity for you to have missed such a wonderful play． It is bad manners for the young to take up the seats for the old． 3．It is ＋adj．＋of sb．＋to do sth．此句型中的形容词主要描述某人的品德、特征。
能用于该句型的形容词有：1 / 13kind, nice, wise, silly, polite, impolite, friendly, foolish, clever 等。
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.被强调部分可所以主语,宾语,表语或状语.强调的主语假如是人,that 可以由 who 换用.假如把这种句型构造划失落后,应当是一个完全无缺的句子.这也是断定强调句型与其它从句的办法.2. It is not until + 被强调部分 + that ...该句型也是强调句型.重要用于强凋时光状语,译成汉语“直到……才……”,可以说是not ... until ... 的强调情势.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/cer tain… that …该句型中it 是情势主语,真正的主语是 that 引诱的主语从句,常译为“清晰（显然,真的,确定……）”是主语从句最罕有的一种构造.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.因为主句中的形容词不合,that 后的从句中要用虚拟语气（should + 动词本相）,should 可以省去.5. It is said (reported, learned…) that …该句型中的it 仍是情势主语,真正主语是 that 引诱的主语从句.该构造常译为“据说（据报导,据悉……）”.6. It is suggested ( ordered, required ... ) that ... +(should) do该句型和上一个同属一个句型.主句中的曩昔分词是暗示要求,建议,敕令等词时,that 后的从句要用虚拟语气（should + 动词本相）,should 可以省.常译为“据建议;有敕令……）”.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 + 动词本相）,should 可省去．暗示出乎料想,常译为“竟然”.没有这种意义时,则不必虚拟语气. It is a pity that such a thing ( should ) happen in your class.这种事竟然产生在你们班上,真是圆满！ It is a pity that he is ill. 他生病了,真圆满！8. It is time ( about time , high time ) that ...该句型中that 后的从句应当用虚拟语气,值得留意的是①经常应用曩昔时态暗示虚拟．②有时也用should + 动词本相,should 不克不及省.常译为“是（恰是）……的时侯……”.9. It is the first ( second … ) time that …该句型要和上一个句型差别开来.该句型中的 that 从句不必虚拟语气,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议.假如是一般如今时,后面从句用如今完成时态;假如是一般曩昔时,后面从句则用曩昔完成时态.该构造中that 可以省去;it 有时用this 调换,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 ...该句型重要用作处理刹时动词的完成时,又要和暗示一段时光的时光状语连用的问题.主句中是时光作表语,当时态是如今时或完成时,since 引诱的从句平日是一般曩昔时态,并且是刹时动词.假如主句是一般曩昔时,从句则用曩昔完成时.11. It is ... when ...该句型中的 when 引诱的是一个时光状语从句,主句中的it 指时光,表语由具体的时光充当.常译为“当……的时刻,是……”.12. It be ... before ...该句型主句中的 it 指时光, 主句中的时态常是未来一般时或曩昔时两种时态．主句中的表语多是long, not long , 3 days , 2 weeks 等暗示时光段的词或短语.常译为“……之后……”.13. It happens (seems, looks, appears ) that...该句型中it是情势主语,that 引诱的是主语从句,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. 恰巧…… 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 是情势主语,句型中的直接宾语是时光.常译为“做……要消费或人……”.15. It is no good (use ) doing sth.该句型中的真正主语是动名词短语,主句中的表语可所以no good , ( not any good ) , no use , ( not any use ).16.Itdoesn'tmatter whether ( if ) ...该句型中whether (if) 引诱的从句是真正主语,该句型常译为“不管（是否）…… 没紧要…….17. It is kind ( of sb. )to do sth.该句型中的不定式短语是真正主语,假如不定式的逻辑主语是由 of 引起,主句中的形容词必须是能暗示逻辑主语特点的形容词.罕有的有: bad, brave, careless, clever, cruel, foolish, good (恶意的), honest, horrible, kind,lazy, modest, naughty, nice (有教化的), 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 sayso. = You are kind to sayso.18. It is necessary ( for sb. ) to do sth.该句型与上一个同属一个句型.假如不定式的逻辑主语是由for 引起,主句中的形容词平日是暗示重要性,紧急性,频仍程度,难易,安然等情形的形容词.罕有的形容词有：①important, necessary, natural②easy, 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 party19. It looks ( seems ) as if ...该句型中it 无意义. as if 引诱一个状语从句.常译为,“看起来仿佛……＂假如与事实不相相符,则用虚拟语气．。
It的特殊用法
It的特殊用法一、作形式主语1．（1）It’s + adj.+ to do sth.It’s important to study English well.(2 ) It’s + adj. +that…It’s important/ necessary/ likely/ possible/ certain/…that…It’s likely that he will win the game.It’s certain that he will come this afternoon.2. It’s + v-ed + that…(1) It’s said/ thought/ believed/ supposed/ reported/ proved/ known…that…It’s known that the earth travels round the sun.= As is known to everybody, the earth travels the sun.= What is known to everybody is that the earth travels the sun.(2) It’s suggested/ advised/ proposed/ requested/ required/ insisted/commanded/ demanded/ ordered/…that…It’s suggested that she（should）finish her homework this afternoon.It’s required that I (should) go at once.3. (1) It’s + 名+that…常见的名词有：a pity, a fact, an idea, an honor, no wonder等It’s a pity that he can’t come to the party.It’s a fact that he didn’t pass the exam.It’s a good idea that we’ll go outing.It’s an honor that I was invited to the meeting.(It’s)no wonder (that) he always takes the first place in the exams.(2) It’s + 名+doing常见的名词有：use, goodIt’s no use crying.It’s no good crying over spilt milk.【谚语】牛奶溢了，哭也没用。
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It的特殊句型一、高考真题1． (他突然想到) that he had an important conference toattend the next morning.( occur)（11高考78题）【答案】It occurred to him【解析】本题考察的是occur引导的句型”it occurs to sb。
that（某人突然想到）“根据后面的动词提示”had“，故要用一般过去时.2.During his last lecture, the scientist_________ (觉得) easier to explain the theory to those with some background knowledge.(find)(09高考73题)【答案】found it/ found （that）it was ks5u【解析】考查句型结构。
根据提示词find及后面的形容词easier可知此处可使用find it + adj.的结构，it后加be动词变做宾语从句也对，此句时态为一般过去时。
34. _______ _ (我花了) one thousand dollars to buy the painting last week. (cost) (08高考34题)【答案】It cost me【解析】考点：it做形式主语（特殊句式）关键词：It cost（★It不用不给分，cost写成co sted 扣0.5分）结构部分：It cost somebody how much money to do something 其它部分：me二、考点分析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，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。
It is your efforts, not your intelligence, __________(决定) your success. (determine )It was about 600 years ago that the first clock with a face and an hour hand was made.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 ...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。
建议记住该句型中的形容词。
It is important that we (should) learn English well. It is necessary that he (should) remember these words.5. It is said (reported, learned，believed....) 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…）＂。
It is said that he has come to Beijing.It is reported that another earth satellite has been put into orbit.6. It is suggested (ordered ... ) that ...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．．．）It is suggested that the meeting (should) be put off.It was ordered that we (should) arrive there in two hours.7. It is a pity ( a shame，no wonder ... ) 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！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…＂。
It is time that children should go to bed. = It is time that children went to bed.9. This /It’s the first/second/third… time+现在完成时的句子 It was the firstsecond/third… time+过去完成时的句子It’s the first time that I have visited（我拜访）the city.(visit)It was the first time that you had knocked at the door of the teacher10. 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。
It is (has been ) 5 years since his father died.It is / has been two years 20. since he went abroad（自从他出国）.（go）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．．．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…＂。
It took thousands of people many years to build the Great Wall.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 )。
It is no good learning English without speaking English.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……。
It doesn’t matter if they are old.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。