it在强调句型中的用法考点透视.

it句型结构语法解析（三）六、用于强调句型1. 基本句型结构it用于强调句的基本句型结构是：It+be+被强调部分+that(who)+其他部分。

请看用例：It was in the Japan that he died. 他是死于日本。

It was yesterday that he got married. 他是昨天结婚的。

It was a computer that he bought last week. 他上个星期买的是一台电脑。

2. 使用强调句型应注意的几点(1) 强调主语时，that后谓语动词的数应与被强调的主语保持一致：It is I who am right. 是我对。

It was you that were wrong. 是你错了。

(2) 不要想当然地用he, she, that等代替强调句中的it：_____ was in this room that he was killed.A. ItB. ThatC. HeD. Who此题答案应选A。

该句还原成非强调句为He was killed in this room.【注】有关强调句型的其他用法说明，参见本讲义“强调句型”。

七、重点考点原创精练1. Luckily, _____ happened to be a foreign teacher there.A. itB. thereC. theyD. that2. _____ is said to be no life on the moon.A. ItB. ThereC. ThatD. He3. You should make _____ a rule to leave things where you can find them again.A. itB. thatC. youD. this4. _____ is known to everybody, the moon travels round the earth once every month.A. ItB. AsC. ThatD. What5. I want very much to buy a color TV set, but I can’t afford _____.A. itB. oneC. thisD. that6. I should prefer _____ if you didn’t go there alone.A. itB. thatC. youD. which7. He is always really rude, ______ is why people tend to avoid him.A. thatB. itC. thisD. which8. Having a trip abroad is certainly good for the old couple, but _____ remains to be seen whether they will enjoy it.A. thatB. itC. thisD. which9. Dear me! Just look at the time! I had no idea _____ was so late.A. itB. asC. thatD. what10. _____ is hard is to do good all one’s life and never do anything bad.A. HeB. ItC. ThatD. What11. _____ is hard to do good all one’s life and never do anything bad.A. HeB. ItC. ThatD. What12. ____ doesn’t seem to have been much difficulty in solving the problem.A. ItB. ThatC. ThereD. He13. I can’t rem ember a Christmas when _____ snowed so much.A. itB. thatC. whatD. the weather14. _____ was when she was about to go to bed that the telephone rang.A. ItB. ThatC. ThereD. He15. Who was _____ that saved the drowning girl?A. thatB. itC. whatD. he参考答案1—5 BAABB 6—10 ADBAD 11—15 BCAAB。

高中英语语法知识之It的用法总结第一篇：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。

“it” 两项重点用法Mar 4. 2011 这两项重点用法指的是强调句和it做形式成分。

一.强调句:一）陈述句：It + is / was + 被强调部分+ that / who … ( 强调人时可用who )I met Tom in the street yesterday.针对各个划线部分变强调句：1) It was I that met Tom in the street yesterday.2) It was Tom that I met in the street yesterday.3) It was in the street that I met Tom yesterday.4) It was yesterday that I met Tom in the street.二）一般疑问句：1) Was it I that met Tom in the street yesterday?2) Was it Tom that I met in the street yesterday?3) Was it in the street that I met Tom yesterday?4) Was it yesterday that I met Tom in the street?三）特殊疑问句：1) Who was it that met Tom in the street yesterday?2) Who was it that I met in the street yesterday?3) Where was it that I met Tom yesterday?4) When was it that I met Tom in the street?四）特殊疑问句作宾语从句：I forgot…1) I forgot who it was that met Tom in the street yesterday.2) I forgot who it was that I met in the street yesterday.3) I forgot where it was that I met Tom yesterday.4) I forgot when it was that I met Tom in the street.结论：特殊疑问句作宾语从句时，主谓词序正常。

高考英语It引导的强调句型讲解一、考点分析表达强调的方式有很多，本章重点学习It引导的强调句。

强调句的考察主要体现在语法填空和翻译题型上。

难点在于该知识点会与其他句型混在一起考察，要准确区别。

二、专题详解一）结构结构详解：针对句子My brother met Li Ming at the railway station yesterday.进行强调1、基本结构强调主语：It was my brother that/who met Li Ming at the railway station yesterday.强调宾语：It was Li Ming that/who my brother met at the railway station yesterday.强调地点状语：It was at the railway station that my brother met Li Ming yesterday.强调时间状语：It was yesterday that my brother met Li Ming at the railway station.2、一般疑问句结构：对主语提问：Was it my brother that/who met Li Ming at the railway station yesterday?后面几句同上，只需将was提到it之前即可。

3、特殊疑问句结构：对主语提问：Who was it that met Li Ming at the railway station yesterday?注意：当用who提问时，为避免重复，连接词用that后面几句同上，用疑问代词/副词代替被强调部分即可。

【即学即用】1) _____ electricity plays an important part in our daily life ?A. Why was it thatB. Why is it thatC. Why is itD. Why it is that2) Who was it _____ wanted to see me just now ?A. t hatB. whoC. whenD. when3) _____ you met the foreigner from Canada?A. Where it was thatB. Who it was thatC. Where was it thatD. Where was that二）使用注意1、主谓一致It is your father who is wrong this timeIt is his parents who have come to China.主语谓语：保持一致总结归纳：主谓一致：被强调部分作主语时，其形式与谓语动词在人称和数上保持一致。

It在强调句中的用法考点透视高中高三英语教研组It一词是高中英语中考查比较频繁的一个词，it含义简单却用法众多，透过近几年的高考试题我们可以看出，各省份高考试题对it的考查十分频繁，尤其是关于it在强调句中的用法的考查更是成为了考查的热点。

以下本文结合近几年高考试题对it在强调句中用法的考查，来对it在强调句中的用法进行一个详细的解析和回顾，通过对照高考真题，归纳讲解it在强调句中的用法，以方便同学们进一步系统牢固地掌握有关it在强调句中的种种用法：1．强调句型的基本结构是：“It is (was) +被强调部分+ that (who) + 其它”被强调部分如果是指人则引导词可以用who，其余情况都用that。

强调句也可以有变体形式，例如：It may have been at the Christmas that John gave Mary a handbag.It might have been John who gave Mary a handbag.强调句的判定方法是：将强调句中的it is/was以及连接词that或who去掉，如果句子仍然成立，成分仍然完整，则说明该句是强调句。

强调句理论上可以强调除谓语以外的任何成分，但是在正式英语中，强调句也一般不强调表语（或叫做主语补足语），例如：It is I who am to blame. （强调主语）It was a new pen that Mother gave me.（强调宾语）It was in the classroom that I left my umbrella.（强调地点状语）It is at eleven that the train leaves.（强调时间状语）It was just as he ordered that I acted.（强调方式状语）It was because he was in trouble that I tried my best to help him.（强调原因状语）It was chairman that they elected him.（强调宾语补足语）相关高考试题：（1）It was after he got what he had desired _______ he realized it was not so important.（06年高考辽宁卷第35题）A. thatB. whenC. sinceD. as（2）David said that it was because of his strong interest in literature _______ he chose the course.（06年高考上海春季招生卷第35题）A. thatB. whatC. whyD. how（3）It is what you do rather than what you say _______ matters.（05年高考天津卷第9题）A. thatB. whatC. whichD. this（4）It was only with the help of the local guide ________.（05年高考上海春季招生卷第37题）A. was the mountain climber rescuedB. that the mountain climber was rescuedC. when the mountain climber was rescuedD. then the mountain climber was rescued 答案：（1）A（2）A（3）A（4）B2．强调句的疑问句形式：强调句的一般疑问句：Is/Was it + 被强调部分 + that /who强调句型的特殊疑问句：疑问词 + is/was it + that/who（1）I just wonder ____ that makes him so excited.（06年高考山东卷第32题）A. why it doesB. what he doesC. how it isD. what it is（2）—____ that he managed to get the information?—Oh, a friend of his helped him.（05年高考山东卷第31题）A. Where was itB. What was itC. How was itD. Why was it答案：（1）D（2）C3．It is/was not until…that…表示“直到……时候才”，也是一个强调句型。

高三代词it的用法归纳it用于强调句型“It is (was) +that (who) +句子的其余部分”。

It在句中无意义，只起引出被强调部分的作用。

被强调的部分指人时，除可用that外，还可换用who（强调宾语指人时也可用whom）。

使用强调句型时，应注意以下事项：一、去掉强调结构It is (was) … that(who)…后，剩下的词仍能组成一个完整的句子。

这是判断是不是强调句型的关键。

试比较：1. It is strange that he didn’t come yesterday.2. It was you and Tom that didn’t come yesterday.3. It is what you do rather than what you say ____matters. （05天津）A. thatB. whatC. whichD. this二、如果强调时间、地点、原因或方式状语时，不可用when, where, why或how，而仍用that。

It was in NewZealand ___ Elizabeth first met Mr. Smith. （08全国II）A. thatB.howC.whichD. when三、注意not until的强调句型及强调句型的疑问句形式，在这方面很容易因弄不清句子结构而错选。

如:1. I just wonder ____that makes him so excited. （06山东）A. why it doesB. what he doesC. how it isD. what it is2. It was not until she got home ____Jennifer realized she had lost herkeys.A. whenB. thatC.whereD.before （06全国卷二）四、强调主语时，that或who后面的谓语动词的形式仍然取决于原句中的主语；be的变化只有is和was两种形式，如果要表示现在时将来时的其它各种形式时，就用It is…, 表达过去时的各种形式时，用It was….一般要与谓语动词的时态一致。

It的用法解析1.it在强调句中用法：⑪It is + 被强调部分+ that …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时，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依据；①It was they that <who> cleaned the classroom yesterday.昨天是他们打扫的教室。

（强调主语）②It is her sister that I have fallen in love with.我爱上的是她的姐姐。

（强调宾语）③It was under the tree that he found his missing purse.他是在树底下找到自己丢失的钱包。

（强调地点状语）④It was last week that I visited the Shanghai Expo.我是上周参观的上海世博。

（强调时间状语）⑫It is not until + 被强调部分+ that …该句型是＂not… until…句型”的强调句，意为＂直到．．．才．．．＂，that后的从句要用肯定句，不可再用否定句；【注意：not until置于句首时，主句用倒装结构；】①It was not until she took off her dark glasses that I recognized she was a famous film star. （强调句）直到她摘下墨镜，我才认出她是一名著名的电影明星。

②Not until she took off her dark glasses did I recognize she was a famous film star. （倒装句）直到她摘下墨镜，我才认出她是一名著名的电影明星。

⑬强调句型的特殊疑问句结构：特殊疑问词+is/was + it + that …；①Who was it that you want to see? 你究竟想见谁？②Why is it that you want to change your mind? 你究竟为什么要改变主意？⑭强调句型的一般疑问句结构：Was/Is it +被强调部分+that…；①Was it they that cleaned the classroom yesterday? 昨天是他们打扫的教室吗？②Was it last week that you visited the Shanghai Expo?你是上周参观的上海世博吗？【注意事项】⑪强调句型结构基本要点：①强调句型中，通常强调主语、宾语、状语等；一般而言，该结构<It is/ was … that …>不可以强调谓语，若强调谓语，则用助动词do/does/did，其后的谓语用动词原形；(a) She did go there alone.她确实是一个人独自去那儿的。

高一册第19单元的语法重点是it在强调句型中的用法，这也是高考的重要考点。

为了强调句子某一成分(除谓语外)，将这一成分置于"It is (was)... that (who)..."这一句型中is (was) 之后，如果强调部分是人，既可用that又可用who连接，其余的全用that。

这一句型也可用于一般疑问句、否定句和特殊疑问句。

其特点是：去掉It is (was) 及that (who)这几个标志词之后，在不添词、不减词的前提下能重新排列成一个完整的句子。

现通过分析高考试题，体会it在强调句型中的用法，以期对同学们有所帮助。

1. Was ________ that I saw last night at the concert?(Shanghai'97)A. it youB. not youC. youD. that yourself析：这是一个一般疑问句，若去掉was和that, 可重新排列成I saw you last night at the concert.句意完整，所以此句是"It was... that..."强调句型的一般疑问句，强调宾语you,故正确答案为A。

2. It is the ability to do the job ________ matters not where you come from or what you are. (NMET2000)A. itB. thatC. oneD.this析：若去掉It is后，剩余的部分仍是一个完整的句子，故是强调句型，强调主语，故正确答案为B。

3. "Wasn't it Dr Wang who spoke to you just now?""________"(Shanghai'96)A. I didn't know he was.B.Yes, it was.C. No, he wasn't.D.Yes, he did.析：这是强调句型的一般疑问句的否定形式，强调主语。

高一英语强调句型中it使用_在高一英语语法中it在强调句型中是怎样使用的呢?下面高中学习网就针对这部分的英语语法给同学们做一个详细的介绍。

在英语中，为了突出强调句子的某一个成分(谓语除外)，达到强调或使听话人特别注意这一部分的目的。

便形成了一种强调句型。

It is / was+被强调的部分+that / who+句子的其他部分。

It is / was not until+时间+that+句子的其他部分。

例句：1. I saw John on my way to school this morning.It was John who/that I saw on my way to school this morning.It was on my way to school that I saw John this morning.It was this morning that I saw John on my way to school.2. It was his best suit that John wore to thedance last night.3. It was not until 1920 that regular radio broadcast began.4. It was the strange way things looked and sounded in my familiar room at night that frightened me so much .5. It was the kindness and sympathy in their eyes that prevented me from doing so .知识难点：(一)注意强调句型的变形，即以一般疑问句或特殊疑问句的形式出现的强调句型。

1. What is it that Joe can t find in the bathroom ?2. Where was it that you met the foreign guests from Australia?3. I can t quite remember when it was that we married.4. Was it because he was very ill that he askedfor leave?(二)是强调句型还是that主语从句或其他复合句1. It is a fact that English is being accepted as an international language.2. It is these poisonous products that can cause the symptoms of the flu, such as headache and aching muscles.3. It was almost ten o clock when our soldiers came back from the front.4. Was it in this place that the last king died ?(三)注意强调句型中被强调部分带有定语从句Was it at the air battle on June 8, 1944, which was led by Captain Johnson that Peter lost his life.。

it的用法专项讲解概念引入先看这些句子：1. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.2. It was a scientist called Charles Keeling, who made accurate measurement of the amount of carbon dioxide in the atmosphere from 1956 to 1997.3. They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.4. It was during the 20th century that the temperature of the earth went up about one degree Fahrenheit.这些句子都是强调句，中的斜体词部分标识出了句中的强调句结构。

用法讲解it引出的强调句1强调句的结构：It is / was + 被强调部分（主语，宾语，状语）+ that (who / whom) + 其它部分在强调句型中：1. 被强调部分可以是主语、宾语或状语。

2. 引导词一般用that，如果是人的话，强调主语还可以用who，强调宾语用who和whom皆可。

3. 判断一个句子是否是强调句，我们可以把被强调部分放回到句子中，不需要添加任何成分时，句子就是强调句。

需要注意的是，在考试中，有的题会迷惑大家，许多题以It is开头，但是It is开头的句子并不全是强调句。

it强调句型重难点、,易错点的归纳和点拨在英语中，我们常用“It is/was + 被强调部分+that/who/whom+ 句子其他部分”这一句型结构来突出强调句子的某一成分，但是在教学中发现学生对强调句型是“学起来容易但真正掌握却很难”，出现很多各种各样的使用错误。

下面就对强调句型的重难点和易错点作一个归纳和点拨：1. 误选强调句型结构词由于受从句等影响，学生在使用it强调句型时往往在选择结构词时出现错误。

那么如何才能正确选择结构词呢？记住这规则：不管被强调部分是什么，都可以用that来构成强调句型，但当被强调部分指人时，可以用who（m）来代替that，whom作宾语。

（1）被强调部分为时间状语、地点状语或者原因状语等情况时不能误用when、where或why等，只能用that。

It was in the street that I met him yesterday.（2）被强调部分既包括人又包括物，用that不用who（m）。

It was the good teachers and the latest equipment that we talked about yesterday.正确选择结构词的关键还在于要能够正确判断“it强调句型”，可采用“还原法”判断：若去掉“It is/was——that”剩下的可以重组成一个句子时是强调句型。

试比较：It was in 1949 that the PRC was founded.（it强调句型）It was 1949 when the PRC was founded.（when时间状语从句）2. 万能化强调句型强调句型的功能很强大但它不是万能的，不可以强调句子的任何成分。

强調句型通常用来强调句子的主语、宾语和状语。

下面列举不适宜用it强调句型的常见情形：（1）it强调句型不能强调句子的谓语部分英语中可用“助动词do、does、did+原形动词”来强调谓语。

应用强调结构，应注意以下几点：⑴ 被强调代词的格应与原句保持一致，其谓语动词与原句保持一致。

E.g. ① It is I who am going to Beijing next week.是我将于下周去北京。

② It is him who I want to see. 我想见的正是他。

⑵ 强调结构也有其否定、疑问或感叹形式。

特殊疑问句中只有疑问词可以被强调，构成“特殊疑问词 + be + it + that + 剩余部分”结构。

E.g. ① It is not only blind menwho make such stupid mistakes. 并非仅仅是盲人才犯这样愚蠢的错误。

② Was it d uring the Second World War during the Second World Warthat he died? 他是在第二次世界大战期间死的吗？③Where was it that you met Tom yesterday?昨天你是在哪儿碰到汤姆的？④What a wonderful time it was that we hadat the party! 我们在聚会上玩得是多么高兴啊！⑶ 强调结构的反意疑问句，附加问句中的主语用it 而不用句中主语。

E.g. ① It was at eleven last night that I I knew knew knew the the the good good good news, news, wasn’t it?是昨天晚上十一点我知道这个好消息的，不是吗？’t ②It is where you come from that you should return to, isnit?你是从哪里来的就应回哪里去，不是吗？⑷对not… until(t ill)结构中状语进行强调时，not需置于被强调的部分之中，构成“It is/ was not until…that…”结构①It was not until she took off her dark glasses that I.recognized she was a famous film star直到她摘下墨镜，我才认出她是位著名影星。

it引导的强调句
it引导的强调句，也称为强调句型，是由一个it + be动词（表示各种时态）+ 被强调部分（通常是名词或代词）+ 其他构成的句子。

它是一种用于凸显重点，使传达的信息更加清晰有力的句型。

it引导的强调句体现在以下三个方面：
1、it 在句子中扮演“形式主语”的角色。

与其他句式不同，这种句式中的it不指代具体的概念，而是作为句子的形式主语，本身没有实际意义，只是为了使整个句子结构更紧凑，从而使得被强调的部分更加突出。

2、it 引导的强调句是一种特殊的结构，它将被强调的部分置于句首，使得被强调的内容更加突出。

而且，它也能够有效地避免主谓重复，使句子更加简洁，突出重点。

3、it 引导的强调句的被强调部分可以是名词、代词、形容词、副词等，因此它能够用于不同的语法结构。

实例：
It was I who talked to him yesterday.
It is not the way, but the will that matters.
It was not until this morning that I realized my mistake.
It is not money but time that he lacks.
It was in this city that I spent my childhood.
总之，it引导的强调句是一种简洁而有力的句型，它能够凸显重点，使传达的信息更加清晰有力。

2021考研英语“it”的用法【导语】生命不是一篇“文摘”，不接受平淡，只收藏精彩。

对于考试而言，每天进步一点点，基础扎实一点点，冠珠教育为您提供2021考研英语知识点，快来看看那吧！一、it强调句型在表示强调的结构中，it 可用作先行代词，这种结构的句型如下：It +is/was +被强调的部分+that +其他部分。

如果强调的部分是人，可用who, whom 代替that.例如：Professor Wang teaches us English every Monday afternoon.王教授每星期一下午教我们英语。

强调主语：It is Professor Wang who teaches us English every Monday afternoon.强调间接宾语：It is us whom Prof. Wang teaches English every Monday afternoon.强调直接宾语：It is English that Prof. Wang teaches us every Monday afternoon.强调状语：It is every Monday afternoon that Prof. Wang teaches us English.1)该上课了，快。

It is time for class. Hurry up.2)从这儿到你们学校远吗?不远，大约一公里。

Is it far from here to your school? No, it isn’t. It’s about a kilometer.3)从我家到颐和园去很近。

It is very near from my home to the Summer Palace.4)(天)正在下雨。

It’s raining now.5)电灯是爱迪生发明的。

It was Edison who invented the electric light.6)我认为学习一门外语是很重要的。

It的强调用法一、表示强调,其结构是: It is/was+强调部分+ that+原句剩余部分。

此结构只限于强调状语、主语和宾语。

注意：①如果强调的是人, 其后用that或who 均可; ②如果强调的是物、时间或地点等状语, 其后只能用that不用where、when、why。

如：原句：My father did the experiment in the lab yesterday evening．1. 强调主语：It was my father who/that did the experiment in the lab yesterday evening．2. 强调宾语：It was the experiment that my father did in the lab yesterday evening．3. 强调时间：It was yesterday evening that my father did the experiment in the lab．4. 强调地点：It was in the lab that my father did the experiment yesterday evening．e.g. It was in that city that we met for the first time．二、若原句是not…until句型, 在强调until 部分时,要把否定形式放入被强调部分。

如:1. He didn’t leave until l returned. = It was not until I returned that he left．2. It was not until he told me that I knew the truth．*若强调谓语,则用do /does /did +动词原形,常译为“的确” “一定”等,该结构只能用于陈述句或祈使句中。

it的用法及强调结构（附常见考点解析及精选练习题）it的用法及强调结构I. 作代词1. 用作人称代词，代替前文提到过的事物（是同一物）。

My pen is missing. I can’t find it anywhere.I was disappointed with the film. I had expected it to be much better.2. 代词it有时不特指某件东西，而代表前面提到的整个事情。

Tom’s mother kept telling him that he should work harder,but it didn’t help. (but连接两个并列分句，而不是非限制性定语从句，用it)The weather turned out to be very good,which was more than we could expect. （前面用逗号隔开，没有并列连词，是非限制性定语从句，which指代前面整个主句所表达的内容，用which不用it）3. 用来代替指示代词this,that.--- What’s this ?--- It’s a book.4. 表示时间、距离、天气、价值等。

It’s ten o’clock now.（指时间）---How far is it from here to the station?---It's about two kilometers.（指距离）It is rather cold today, isn't it?（指天气）---What's the cost of the dictionary?---It is twenty dollars.（指价值）5. 可用来指做某个动作的人或与某事有关系的人。

---- Who is making such a noise ? --- It must be the children.II. 引导词it1. 作形式主语，代替由不定式短语、动名词短语或从句表示的真正主语。

it用于强调句型，请注意这5个方面英语中的强调句型，是以It 开头的一种强调结构，用于对句子的某一部分进行强调，这种举行的结构式：It is \ was 被强调的部分 that \ who \ whom 其他部分，其中who、whom用于对人的强调，that 适用于各种情况。

1. 强调句型的结构：比如对于下面的一个陈述句的各个部分进行强调：Mary feeds the dog every morning at 8.玛丽每天早晨8点喂狗。

强调主语Mary：It is Mary who feeds the dog every morning at 8.此句旨在强调喂狗的不是别人而是Mary。

强调宾语the dog：It is the dog that Mary feeds every morning at 8.此句旨在强调Mary喂的是狗狗而不是别的宠物。

强调状语every morning at 8：It is every morning at 8 that Mary feeds the dog.此句旨在强调喂狗的时间是早上八点，注意不能用when 代替that，同样，如果强调地点状语，不能使用 where，例如：It is in the garden that Mary feeds the dog. Mary 是在花园里喂的狗狗。

2. 使用 whom 的情况：如果被强调部分是人，而且作宾语，就可以使用whom，例如：I gave Mary a gift last week. 我给了 Mary 一件礼物。

It was Mary whomI gave a gift to.这个句子中，如果强调主语 I ，则只可以使用 who，例如：It was I who gave Mary a gift.3. 强调句型的一般疑问句，把 is \ was 提前：Was it Mary whom you give a gift to?你是把礼物给了Mary吗？（想知道会不会误给了别人）4. 强调句型的特殊疑问句，即在一般疑问句前加上特殊疑问词：Who was it that you give a gift to? 你到底把礼物给了谁？Where was it that you give the gift? 你是在哪儿送的礼物？5. 强调句型中使用not …… until……的情况：It was not until 10 o'clock that I finished work. 直到10点我才完成工作。