Itisthat结构归纳总结
高考英语必备句之Itisthat句型
⾼考英语必备句之Itisthat句型⾼考英语必备句之It is ------ that 句型(1)It is ＋名词＋从句It is a fact/an honour --- that +陈述语⽓从句例：It is a fact that the earth moves around the sun.地球围绕太阳转是事实。
It is a pity/shame/no wonder that + 虚拟语⽓从句例：It is a pity that he should not come. 他若不来可真是遗憾。
(2)It is ＋形容词＋从句It is natural/important/necessary/strange that + 虚拟语⽓从句例：It is important that enough money be collected to fund the project.重要的是募集⾜够的钱，为这个项⽬提供资⾦。
It is obvious/apparent/clear that + 陈述语⽓从句例：It is clear that she doesn't like the dress at all.这很清楚她⼀点⼉也不喜欢这条裙⼦。
(3)It ＋过去分词＋从句It is generally/commonly believed /accepted/thought/heldthat ...+陈述语⽓从句例：It is universally acknowledged that trees are indispensable to us.全世界都知道树⽊对我们是不可或缺的。
It is suggested/ordered/desired/requested/decided that +虚拟语⽓从句例句：It is suggested that we should hold a meeting next week.建议我们下周开上会。
it is that定语从句
it is that定语从句"it is that" 可以引导一个强调句型，这在英语中是一种常见的结构，用来强调句子中的某个部分。
完整的结构是 "It is/was + 被强调部分 + that/who + 句子的其他部分"。
这种结构强调的可以是句子的主语、宾语或状语。
以下是一些使用 "It is that" 强调结构的例子：1. 强调主语：- It is the teacher that/who is explaining the lesson.(是老师在讲解课程。
)2. 强调宾语：- It is the book that/which I gave you.(是我给你的那本书。
)3. 强调状语：- It is yesterday that he arrived in Beijing.(他是在昨天到达北京的。
)在使用这个结构时，要注意以下几点：- 如果被强调的部分是人，可以使用 "that" 或 "who"；- 如果被强调的部分是事物，通常使用 "that" 或 "which"（在非限定性定语从句中更常用 "which"）；- 这个结构不能强调谓语动词。
判断一个句子是否是强调句型，可以将 "It is/was" 和 "that/who" 去掉，如果剩下的部分仍然是一个完整的句子，那么原句就是一个强调句。
例如，去掉 "It is" 和 "that" 后，"the teacher is explaining the lesson" 依然是一个完整的句子，所以原句是一个强调句。
Itis..that句型
Itis..that句型写作必会句式训练It is + 过去分词+ that - clause一．句型归纳：1.It is said that .... 据说……2.It is reported that .... 据报道……3.It is decided that .... 根据决定……4.It is believed that .... 人们相信……5.It is thought that .... 人们认为……6.It is expected that .... 人们期待……7.It is hoped that .... 人们希望……8.It is supposed that .... 据推测说……9.It is well-known that .... 众所周知……10.It is generally accepted that .... 普遍接受11.It is generally considered that .... 普遍认为12.It must be kept in mind that .... 一定要记住13.It must be admitted that....必须承认……14.It must be pointed out that....必须指出……15.It has been proved that....有人已经证实……二．语法填空：（主要考察这次所学句型）Yes, SARS is striking our country, but not the whole. And not all the schools in Beijing are closed, either. _____1_____ is reported that most schools are going as usual, including mine. _____2_____(frighten) as some people are, yet the majority are treating it rationally (理性地).It is well-known that any new disease is _____3_____(cure) when it just appears to mankind. SARS is no exception. Therefore, it must _____4_____(keep) in mind that there should not be any fuss over it. It is believed that SARS _____5_____(spread) mainly byair according to the latest _____6_____(discover). To protect us human beings from it, scientists have suggested many ways as follows:Before going out, put your masks(口罩). Reduce your visits _____7_____ your friends and relatives. It is _____8_____(general) accepted that windows should be kept open to keep the air in your room fresh and _____9_____ your hands and faces should be washed clean when getting home. It must be borne in mind that if you have a temperature or get a cough, you should see the doctor as timely as possible.Now, It is expected that with scientists _____10_____(work) all out on SARS, the day will come soon when man conquer SARS as long as we unite as one.三单句练习：(主要考查我们所学过的三个句型)1）__________________________________________________ in the earthquake-striken areas. 据说，他们正在为地震灾区的人们募集资金。
It is that 句型的含义
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... ”。
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.
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。
第一题:
It’s the first time （that）...
它是固定搭配，也是强调句的一种， 强调是第一次来到这个国家。一般来讲 后面应该是现在完成时，因为前面是is， 有时候 is 变为was时用过去完成时。
第二题:
This is the first ( second ... ) time
It is important that we (should) learn english well. It is necessary that he (should) remember these words.
it is …that的主语从句
it is …that的主语从句一、“It is...that”主语从句的结构与用法1. 基本结构- 在“It is...that”结构的主语从句中，it是形式主语，真正的主语是that引导的从句。
例如：It is important that we study hard.（我们努力学习是很重要的。
）这里“that we study hard”是真正的主语，it只是形式上占据主语的位置，使句子结构平衡，避免句子“头重脚轻”。
2. that的特点- that在主语从句中无实际意义，不充当句子成分，但不能省略。
这一点与宾语从句中that有时可省略有所不同。
例如：It is a fact that the earth goes around the sun.（地球绕着太阳转是一个事实。
）3. 常见的it is后面的成分- 形容词- 当it is后面接形容词时，表示对某事的一种评价或描述。
例如：It is necessary that we should protect the environment.（我们应该保护环境是必要的。
）常见的形容词还有important（重要的）、obvious（明显的）、strange（奇怪的）等。
- 名词- 如果it is后面接名词，这个名词往往是对后面主语从句内容的一种概括。
例如：It is a pity that he missed the train.（他错过了火车真是遗憾。
）其他常见名词如fact（事实）、truth（真相）、good news（好消息）等。
二、主语从句中语序与时态的注意事项1. 语序- 主语从句要用陈述语序。
例如：It is uncertain whether he will come.（他是否会来还不确定。
）而不能写成It is uncertain will he come。
2. 时态- 时态要根据具体语境来确定。
如果主句是一般现在时，从句可以根据实际情况使用各种时态。
it is that可能出现的句型探析
.
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It is…that…第三种句型可能情况
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It is + … +that从句（中间加time的情况）
4).① It is time ( about time ，high time ) that ... 该句型中that 后的从句应该用虚拟语气，值得注意的是常 用过去时态表示虚拟．常译为＂是（正是）．．．的时 侯．．．＂
It is very clear that he’s round and tall like a tree.
.
8
方法：把it去掉，然后把that等引导的句 子放在其位置上，结构和语意成立，就是 主语从句。
It is very clear that he’s round and tall like a tree.
.
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Good bye
.
20
star until she took off her dark glasses.
彩体字部分应引起高度关注，是一个倒装句，
由not ... until 置于句首构成部分倒装. 。
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二、It is … that… 似乎是一个主语从句，it是 一个形式主语 想一下：如何判断它是一个主语从句，方
法是什么？
②. It is suggested ( ordered /demanded/insisted/commanded... ) that ...
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 is...that结构归纳总结
“It is…that…”结构归纳总结现行高级中学英语教材中，我们常会遇到“It is…that …”这一结构。
如何理解这一句子结构，正确翻译句子，提高阅读能力是至关重要的。
现就以下几种情况作一浅析：一、“It is/was+形容词+that…”结构在该结构中，it是引导词，作形式主语，从属连词that引导的是主语从句，在句中作真正的主语。
例如：1. It was right that the temple was rescued. 拯救这座寺庙是做得对的。
2. It was obvious that the matter had never been paid attention to.显然这件事一直没有被注意。
3. It is strange that she should have failed to see her own shortcomings.真奇怪，她竟然没有看出自己的缺点。
在用法上，该结构与“It is+形容词+不定式复合结构”（即“It is+adj. +of sb.to do sth.”“It is+adj.+for sb.to do sth.”或“It is+adj.+for sth.to be done”）是一样的。
有时主语从句也可与不定式复合结构互换使用。
例如：4. It's quite likely that a decision will be made before the end of the year.（It is quite likely fora decision to be made before the end of the year.）年底以前作出决定是完全可能的。
二、“It is+名词+that…”结构5. It is no wonder that she is so ill.她病得这样厉害是不足为怪的。
6. It is a pity that you live at such a distance. 很遗憾，你住得那么远。
itis---that强调句用法
It is……that强调句用法当需要强调句中的主语、宾语、状语时，我们常用“It is(was)+被强调部分+that(who)”这种句型，使用此句型时，应注意以下几点。
1.一般情况用It is(was)……that…如：He read three books in the library yesterday.我们分别可以强调主语、宾语、地点状语和时间状语。
如：It was he who(that)read three books in the library yesterday.(强调主语)It was three books that he read in the library yesterday.(强调宾语) It was in the library that he read three books yesterday.(强调时间状语)2.当被强调部分指人时，可用that，也可用who；指物时，只用that,如：It was Tom who(that)I met last week.It is a new bike that his brother wants to buy.3.强调状语时，只用that,不用when、where.如：It is at 5 o'clock that the train will arrive.4.被强调的部分是主语时，注意句子的谓语动词和被强调的主语保持一致。
如：It is he who is late.It is they that were late.5.一般疑问句的强调句为:Is (was) it + that…?特殊疑问句为：特殊疑问词+ is (was) it +that…?结构。
如：Was i t ten years ago that his father died?（他的父亲是十年前去世的吗？）When is it that you will set off?（你到底什么时候出发？）6.注意在强调句的疑问句型中，强调标志that/who后只能使用陈述语序。
Itisthat结构归纳总结
“It is…that…”结构归纳总结现行我们常会遇到“It is…that …”这一结构。
如何理解这一句子结构，正确翻译句子，提高阅读能力是至关重要的。
一、“It is/was+形容词+that…”结构在该结构中，it是引导词，作形式主语，从属连词that引导的是主语从句，在句中作真正的主语。
例如：1. It was right that the temple was rescued. 拯救这座寺庙是做得对的。
2. It was obvious that the matter had never been paid attention to.显然这件事一直没有被注意。
3. It is strange that she should have failed to see her own shortcomings.真奇怪，她竟然没有看出自己的缺点。
在用法上，该结构与“It is+形容词+不定式复合结构”（即“It is+adj. +of sb.to do sth.”“It is+adj.+for sb.to do sth.”或“It is+adj.+for sth.to be done”）是一样的。
有时主语从句也可与不定式复合结构互换使用。
例如：4. It's quite likely that a decision will be made before the end of the year.（It is quite likely for a decision to be made before the end of the year.）年底以前作出决定是完全可能的。
二、“It is+名词+that…”结构5. It is no wonder that she is so ill.她病得这样厉害是不足为怪的。
6. It is a pity that you live at such a distance. 很遗憾，你住得那么远。
it is…that强调句型结构
it is…that强调句型结构
"It is...that" 强调句型是一种英语中常用的结构，用于强调特定的信息。
该结构的基本形式是："It is + 强调部分+ that + 原句主语+ 谓语"。
以下是具体的结构和示例：
1. 强调主语：
原句: John broke the vase.
强调句: It was John who broke the vase.
解释: 强调John是动作的执行者。
2. 强调宾语：
原句: They found the lost keys.
强调句: It was the lost keys that they found.
解释: 强调被找到的是"the lost keys"。
3. 强调时间：
原句: She finished her work yesterday.
强调句: It was yesterday that she finished her work.
解释: 强调完成工作的时间是"yesterday"。
4. 强调地点：
原句: He left his bag at the station.
强调句: It was at the station that he left his bag.
解释: 强调离开包的地点是"at the station"。
通过这种强调句型，可以将原句中的某个部分突出强调，使其在句子中得到更多的关注。
这种结构在书面语和口语中都常见，有助于使特定信息更加突出和清晰。
it is--- that强调句用法
学习必备欢迎下载It is……that强调句用法当需要强调句中的主语、宾语、状语时，我们常用“It is(was)+被强调部分+that(who)”这种句型，使用此句型时，应注意以下几点。
1.一般情况用It is(was)……that…如：He read three books in the library yesterday.我们分别可以强调主语、宾语、地点状语和时间状语。
如：It was he who(that)read three books in the library yesterday.(强调主语)It was three books that he read in the library yesterday.(强调宾语) It was in the library that he read three books yesterday.(强调时间状语)2.当被强调部分指人时，可用that，也可用who；指物时，只用that,如：It was Tom who(that)I met last week.It is a new bike that his brother wants to buy.3.强调状语时，只用that,不用when、where.如：It is at5o'clock that the train will arrive.4.被强调的部分是主语时，注意句子的谓语动词和被强调的主语保持一致。
如：It is he who is late.It is they that were late.5.一般疑问句的强调句为:Is(was)it+that…?特殊疑问句为：特殊疑问词+is(was)it+that…?结构。
如：Was it ten years ago that his father died?（他的父亲是十年前去世的吗？）When is it that you will set off?（你到底什么时候出发？）6.注意在强调句的疑问句型中，强调标志that/who后只能使用陈述语序。
itis加形容词that的句型
itis加形容词that的句型“It is + 形容词 + that...”句型学习资料一、句型结构1. 基本结构“It is + 形容词+that...”是一个常用的英语句型，其中“it”是形式主语，真正的主语是“that”引导的从句。
例如：It is important that we study hard.（我们努力学习是很重要的。
）在这个句子中，“that we study hard”是真正的主语，表示一件事情，“it”只是形式上的主语，代替“that”从句放在句首，使句子结构更平衡。
二、常见形容词1. 表示重要性的形容词important（重要的）It is important that everyone should protect the environment.（每个人都应该保护环境，这是很重要的。
）necessary（必要的）It is necessary that you follow the traffic rules.（你遵守交通规则是必要的。
）2. 表示可能性的形容词possible（可能的）It is possible that he will come back tomorrow.（他明天可能回来。
） likely（可能的，倾向于）It is likely that she will get the job.（她很可能得到这份工作。
）3. 表示情感或态度的形容词strange（奇怪的）It is strange that he didn't show up at the party.（他没在聚会上露面，这很奇怪。
）surprising（令人惊讶的）It is surprising that they won the game.（他们赢了比赛，这很令人惊讶。
）三、句型的用法1. 用于表达观点或看法在阐述对某件事情的观点时，这个句型非常有用。
例如：It is obvious that she is a very talented singer.（很明显，她是一位非常有才华的歌手。
强调结构“it-is-+...+that从句”详细用法(5页11月15日)
陈才英语教育及辅导中心强调结构“It is+…+that从句用法辅导老师：陈才辅导学生：日期:2018年11月15日强调结构“It is+…+that从句详细用法强调结构“It is+…+that从句”应注意的几个问题“It is/was + 被强调部分+that /who +其他”这一结构是最典型的强调结构，也是历年高考的重点。
它的特点是去掉it was ….that这一框架后，所剩部分仍为一个完整的句子。
如：It was how the young man had learned five foreign languages that attracted the audience's interest. 吸引听众兴趣的是那个年轻人如何学会了五种语言。
使用这一结构要注意以下几点：一、主谓一致1、that \ who后面的谓语要与主句一致。
如：It is Lucy who (that) often helps me with my English. 是Lucy经常帮助我学习英语。
（主语是Lucy）It is Lucy and Lily that (who) often help me with my English. 是Lucy和Lily经常帮助我学习英语。
（主语是Lucy和Lily）尤其需要注意的是，在强调either …or…, neither …nor …, not only…but also…等词组所构成的句子时，that或who后的谓语动词要根据就近原则，如：It was neither you nor he that is willing to the Great Wall. 既不是你也不是他愿意去长城。
在强调有as well as, not…but, together with, except, like等短语构成的句子时，谓语动词要与这些词前面名词数一致，如：It was he as well as his classmates that has ever been to Suzhou. 是他，还有他的同学，曾经去过苏州。
it is that 强调句用法
it is that 强调句用法在英语中语法和常用句型中，我们一般会出现一些强调某一个句子的表达，这个时候一个常用的句型就是It is that ，它后面所强调的句子主要是做主语成分、宾语成分和状语成分，很少用来强调其他的语法成分。
it is that 强调句用法一、强调主语我们知道整个it is that 是强调的某一个句子的，但是句子中有一个语法成分，因此需要强调的成分需要放在is后面，句子中的其他成分放在that后面，这就是整个句型的用法了。
在强调主语的时候是变焦简单的，直接is后面跟一些代词和名词即可，因为一般就是这两种词型可以作为主语。
但是需要主语的是，无论代词或者名词是复数还是单数，强调句型it is that中都是使用is。
例如They used to be our best friends.改为强调句，强调主语，就变成It was they that used to be our best friends，这里虽然强调是复数they但是依然用的是was。
二、强调宾语强调宾语是比较难的，特别是对于双宾语动词，其引导的直接和间接的宾语都是可以被强调的，例如She lent me some books five days ago.改为强调句型就为It was some books that she lent me five days ago.这里强调的是直接宾语some books ，而其实其中的间接宾语me也是可以被强调的。
三、强调状语英语里面可以被强调的状语一般为方式状语、地点状语、时间状语，比如He often plays basketball with his classmates in the gym on weekends.这个里面如果强调地点状语就变为It is in the gym that he often plays basketball with his classmates on weekends。
强调句及Itis...thatsincebefore等句型归纳
强调句及Itis...thatsincebefore等句型归纳1. 为了突出或强调句中的某一成分以加强语气, 英语中通常用“It is + 被强调成分+ that/who”结构，这一结构叫作强调结构。
该结构中的 It •是无人称主语, 没有词汇意义,仅起到改变句子结构,使某一成分受到强调的作用。
如被强调的是物，用 that; 如被强调的是人, 用 who, 也可用 that。
••••强调结构中被强调的成分通常是句中的主语、宾语、地点状语或时间状语。
例如下面一句, 我们可分别对其不同成分进行强调：John wore a white suit at the dance last night.1.It was John that/who wore a white suit at the dance last night.（强调主语）2. It was a white suit that John wore at the dance last night. (强调宾语）3. It was at the dance that John wore a white suit last night. (强调地点状语）4. It was last night that John wore a white suit at the dance.（强调时间状语）••••强调结构亦可用来强调某些状语从句：It was because he was ill that he didn't come to school yesterday.（强调 because 引导的原因状语从句）It was only when the war was over in 1949 that he was able to get back home.(强调when 引导的时间状语从句）It was not until his father came back that he went to bed. (强调 until引导的时间状语从句）••••现谈谈强调结构中值得注意的几个问题：••••一. 强调结构中的时态问题••••如果被强调的成分，原句谓语动词是一般现在时或一般将来时，强调结构用 It is...that/who; 如果原句的谓语动词是过去时态，则用• Itwas...that/who; 有时还可用 be 的其它形式。
it is…that强调句型结构
it is…that强调句型结构
"it is...that" 强调句型是用来强调一个特定的信息或情况。
在这个结构中，"it" 是形式主语，而后面的"that" 引出了真正的主语。
例如：
原句：他昨天才买了新车。
强调句型：It was yesterday that he bought a new car.
强调后：It was yesterday that he bought a new car.
原句：我正是在这个地方找到了丢失的钱包。
强调句型：It was in this place that I found the lost wallet.
强调后：It was in this place that I found the lost wallet.
原句：他不是我要见的那个人。
强调句型：It is not him that I want to meet.
强调后：It is not him that I want to meet.
原句：这正是我一直在寻找的答案。
强调句型：It is this answer that I have been looking for.
强调后：It is this answer that I have been looking for.
希望这个例子能帮到你！如果有任何其他问题，请随时问我。
1Itis+被强调部分+thatit句型
1. It is+被强调部分+that该句型是强调句型，将被强调的放在前面，其他部分置于之后，(强调的主语如果是人，可以用who来替换that) 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他从句的方法。
It was they that /who cleaned the classroom yesterday.2. It is not until +被强调的部分+ that该句型译成汉语“直到……才”It was not until she took off her dark glasses that I realized she was a film star.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结构。
It is very clear that he’s round and tall like a tree.4. It is important (necessary, r ight, strange, natural…) that…该句型和上一句同属一个句型。
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, bel ieved …) that…该句型中的it 仍是形式主语，真正的主语是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…该句型和上一句属一个句型。
it is that句型 完整版
He didn't care about it at all.
“It is…that …”结构的几种情况
一、“It is/was+形容词+that…”结构
在该结构中，it是引导词，作形式主语，从属连词that引导的是主 语从句，在句中作真正的主语。
1.It was right that the temple was rescued. 拯救这座寺庙是做得对的。 2.It is difficult that you swim or dive as your body floats on the surface. 当你身体浮在水面上，你游泳或潜水都是困难的。 3.It was obvious that the matter had never been paid attention to. 显然 这件事一直 没有被注意。
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.
When引导的时间状语从句， It表示时间
其他强调形式
1.It be …that..句型不能强调谓语部分，若要 强调谓语，则须在谓语动词原形前面加上助动词 do,did,does
I really like you ,and I do hope everyone has a promising future.
He will leave for Hong Kong at 7:00 .
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“I t i s…t h a t…”结构归纳总结
现行我们常会遇到“It is…that …”这一结构。
如何理解这一句子结构，正确翻译句子，提高阅读能力是至关重要的。
一、“It is/was+形容词+that…”结构
在该结构中，it是引导词，作形式主语，从属连词that引导的是主语从句，在句中作真正的主语。
例如：
1. It was right that the temple was rescued. 拯救这座寺庙是做得对的。
2. It was obvious that the matter had never been paid attention to.显然这件事一直没有被注意。
3. It is strange that she should have failed to see her own shortcomings.
真奇怪，她竟然没有看出自己的缺点。
在用法上，该结构与“It is+形容词+不定式复合结构”（即“It is+adj. +of do sth.”“It is+adj.+for do sth.”或“It is+adj.+for be done”）是一样的。
有时主语从句也可与不定式复合结构互换使用。
例如：
4. It's quite likely that a decision will be made before the end of the year.（It is quite likely for a decision to be made before the end of the year.）年底以前作出决定是完全可能的。
二、“It is+名词+that…”结构
5. It is no wonder that she is so ill.她病得这样厉害是不足为怪的。
6. It is a pity that you live at such a distance. 很遗憾，你住得那么远。
三、“It is+过去分词+that…”结构
7 .It was said that he found in music the peace which was missing in a world full of wars and killings.据说他从音乐里找到了在充满战争和屠杀的世界里所失去的和平。
8. It is decided that I will meet them at the airport.决定让我去机场接他们。
9. It is arranged that the class meeting will be held next week.根据安排班会于下周召开。
10. It is believed that before writing was developed people in China used to keep records by putting a number of stones together.人们认为，在出现书写之前，中国人常把石块放在一起来记事。
11. It is hoped that the way of Inuit life will be kept alive for many more centuries.人们希望因纽特人的生活方式将会保持更多世纪。
12. It has been found that all kinds of matter consist of atoms.人们已经发现各种物质
都是由原子组成的。
常见的还有，It is seen that…人们看到；It is known that…众所周知…；It is generally considered that…大家认为…；It is told that …有人曾经说…等。
四、“It is/was…that”结构强调句型
这种结构为“强调句型”。
使用这种结构时要注意，该结构不能用来强调谓语动词、定语和表语，可强调主语、宾语和状语，其句型为It is/was+强调成分+that+其他成分，若强调成份是人，也可用who代替that。
It在句中没有意思，只用来加强语气，帮助改变一个句子结构，使某些成分受到强调，汉译时可译为“…是…（的）”。
例如：is the Communist Party that leads us to victory.是共产党领导我们走向胜利的。
（强调主语）
14. It is John who/that might have bought a new book yesterday for Mary.昨天是约翰
给玛丽买了一本新书。
（强调主语）
15. It is a new book that John might have bought yesterday for Mary.约翰昨天给玛丽
买的是一本新书。
（强调宾语）
16. It is yesterday that John might have bought a new book for Mary.约翰是在昨天给
玛丽买了一本新书的。
（强调时间状语）
五、“It was not until/till…that…”结构
该结构为“特殊强调句型”这种结构实际上是强调句型“It is/was…that”结构的特殊
用法，专门用来强调时间状语，汉译时习惯译为“直到…才…”。
例如：
17. It was not until yesterday that I noticed it.（=I didn't notice it until yesterday.）
直到昨天我才注意到这件事。
was not until 1972 that we began studying English.直到1972年我们才开始学英语。
19. It was not till evening that we learned the unhappy news.直到晚上我们才得知这不幸的消息。
六、“It is time…that…”结构
It’s time + that clause时，that可省略，time可由high, about修饰，从句中的谓语动词有两种形式，或者用动词的过去式(be用were)；或者用should + 动词原形（should
不能省略)。
此句型为虚拟语气句型，表示“现在某人该做某事了”。
含有该事早该去做而未做，现在去做似乎都为时已晚的意思。
例：
20. It’s time （that）we went to bed. 我们该去睡觉了。
21. It’s high time that the article were published. 发表这篇文章是适时的。
22. It’s time you should do cleaning. 你该去打扫卫生了。
七、It’s + the/序数词+ time +to do sth. 表示某人第几次做某事。
例：
23. It is my first time to write letter in English. 这是我第一次用英语写信。
八、It’s + the+序数词+ time+ that clause.也表示某人第几次做某事。
例：
24. It is my first time that I’ve even written letters. 这是我第一次用写信
25. It was the second time that I had been there. 那是我第二次去那里。