用定语从句造句10个
I feel sorry for famous people who live their lives in the glare of publicity.我真可怜那些要在众目睽睽之下生活的名人。
He's not the kind of man who would go back on his words.他不是那种背信弃义的人。
People who walk on the grass are liable to a fine.在草坪上行走要罚款。
The man who I saw is called Smith.我见到的那个人名叫史密斯。
The man who telephoned was a friend of yours.打电话的人是你的一位朋友。
He who laughs last laughs best.谁笑到最后,谁笑得最好。
There is a lady who wants to see you.有一位女士要见你。
The girl with whom he had been living for two years suddenly packed her bags and left.这姑娘和他同居了两年,突然收拾起行李走掉了。
The police have pulled in a half dozen people搜趣网 whom they suspect.警方已逮捕6个他们怀疑的人。
That's the girl (whom) I teach. 那就是我教的女孩。
The person (whom) you wish to see has come.你希望见到的人已经来了。
He is a shallow thinker whose opinions aren't worth much.他看问题很浅薄,他的意见没有多大价值。
The play,whose style is rigidly formal,is typical of the period.这剧本是那个时期的典型作品,风格拘谨刻板。
Nobody is going to buy a house whose front door opens onto a gas works.没有谁会买一栋前门对着煤气厂的房子。
I'd like a room whose window looks out over the sea.我想要一个窗户面临大海的房间。
This is the room which is kept for the reception of visitors.这是专供接待来访者用的房间。
There is a special parasite which gives rise to the itch.有一种特别的寄生虫会导致皮炎。
Lally was right about the repairs which the cottage needed.拉莉关于农舍需要如何修理的意见是正确的。
Rule out neatly any words which you don't wish Jack to read.把你不想让杰克看的词句整整齐齐地划掉。
The sports day is an occasion which we can all join in.运动日是大家都能参加运动的一个机会。 She is one of the students that work very hard. 她是特别用功的学生之一。
Is he the man that sells eggs?他是卖鸡蛋的那个人吗?
I like those cookies that are coated with chocolate spread.我喜欢那些裹巧克力酱的甜饼。
The letter that I received from him yesterday is very important.我昨天收到的他那封来信很重要。
Here is the car that I had told you about.这就是我和你谈过的那辆汽车。
The two brothers were satisfied with this decision,as was agreed beforehand.两兄弟对这个事先已经同意的决定都满意。
I never heard such stories as he tells.我从未听过他讲的这类故事。
I have never seen such a man as you talked about.我从没见过你说到的那种人。
During this terrible year they took only such food as they could find.在这可怕的年头里,他们只能找到什么吃什么。
He is not the same boy as he was.他和从前不一样了。
Her attitude to him was quite the same as it had always been.她对他的态度同她一贯的态度完全一样。
I gave him old clothes which he made a penny of.我给了他一些旧衣服,让他拿去换钱。
The situation (which) we had got into was very dangerous.我们当时的处境很危险。
The man (whom) we sent the present to is a doctor of laws.我们寄给他礼物的那个人是位法学博士。
He married a wife by whom he had two daughters.他娶了妻并和她生了两个女儿。
Water is the natural medium in which most fish live.水是大多数鱼类生活的自然环境。
There were long periods when we had no news of him.我们曾好长时间没有他的消息。
Jenney dreams of the day when she will be playing the piano for a living.珍妮梦想着有朝一日能以演奏钢琴为生。
This is the hour when the place is full of people.这种时候这地方到处都是人。
Returning to a city where one used to live can be a saddening experience.重归故地有时会给人带来几许惆怅。
I went off in search of a garage where I could buy some petrol.我跑去寻找加油站买汽油。
The tourists sought out a shady spot where they sat down and rested. 旅游者找到一块阴凉的地方坐下休息。
The reason why she didn't get the job was that her English was not very good.她没得到这个工作的原因是她的英语不是很好。
The reason why he is late is that his car went wrong.他迟到的原因是他的汽车坏了。
That is the reason why we must go now.这就是我们现在必须走的理由。
This is one of the basic reasons why some of our work can't be done well.这是我们有些工作做不好的一个基本原因。 This is the way how he always treats me. 他一贯就是这样对待我的。
That's the way how I learn English.那就是我学英语的方法。
He's not the kind of man who would go back on his words.他不是那种背信弃义的人。
People who walk on the grass are liable to a fine.在草坪上行走要罚款。
The man who I saw is called Smith.我见到的那个人名叫史密斯。
The man who telephoned was a friend of yours.打电话的人是你的一位朋友。
He who laughs last laughs best.谁笑到最后,谁笑得最好。
There is a lady who wants to see you.有一位女士要见你。
The girl with whom he had been living for two years suddenly packed her bags and left.这姑娘和他同居了两年,突然收拾起行李走掉了。
The police have pulled in a half dozen people搜趣网 whom they suspect.警方已逮捕6个他们怀疑的人。
That's the girl (whom) I teach. 那就是我教的女孩。
The person (whom) you wish to see has come.你希望见到的人已经来了。
He is a shallow thinker whose opinions aren't worth much.他看问题很浅薄,他的意见没有多大价值。
The play,whose style is rigidly formal,is typical of the period.这剧本是那个时期的典型作品,风格拘谨刻板。
Nobody is going to buy a house whose front door opens onto a gas works.没有谁会买一栋前门对着煤气厂的房子。
I'd like a room whose window looks out over the sea.我想要一个窗户面临大海的房间。
This is the room which is kept for the reception of visitors.这是专供接待来访者用的房间。
There is a special parasite which gives rise to the itch.有一种特别的寄生虫会导致皮炎。
Lally was right about the repairs which the cottage needed.拉莉关于农舍需要如何修理的意见是正确的。
Rule out neatly any words which you don't wish Jack to read.把你不想让杰克看的词句整整齐齐地划掉。
The sports day is an occasion which we can all join in.运动日是大家都能参加运动的一个机会。 She is one of the students that work very hard. 她是特别用功的学生之一。
Is he the man that sells eggs?他是卖鸡蛋的那个人吗?
I like those cookies that are coated with chocolate spread.我喜欢那些裹巧克力酱的甜饼。
The letter that I received from him yesterday is very important.我昨天收到的他那封来信很重要。
Here is the car that I had told you about.这就是我和你谈过的那辆汽车。
The two brothers were satisfied with this decision,as was agreed beforehand.两兄弟对这个事先已经同意的决定都满意。
I never heard such stories as he tells.我从未听过他讲的这类故事。
I have never seen such a man as you talked about.我从没见过你说到的那种人。
During this terrible year they took only such food as they could find.在这可怕的年头里,他们只能找到什么吃什么。
He is not the same boy as he was.他和从前不一样了。
Her attitude to him was quite the same as it had always been.她对他的态度同她一贯的态度完全一样。
I gave him old clothes which he made a penny of.我给了他一些旧衣服,让他拿去换钱。
The situation (which) we had got into was very dangerous.我们当时的处境很危险。
The man (whom) we sent the present to is a doctor of laws.我们寄给他礼物的那个人是位法学博士。
He married a wife by whom he had two daughters.他娶了妻并和她生了两个女儿。
Water is the natural medium in which most fish live.水是大多数鱼类生活的自然环境。
There were long periods when we had no news of him.我们曾好长时间没有他的消息。
Jenney dreams of the day when she will be playing the piano for a living.珍妮梦想着有朝一日能以演奏钢琴为生。
This is the hour when the place is full of people.这种时候这地方到处都是人。
Returning to a city where one used to live can be a saddening experience.重归故地有时会给人带来几许惆怅。
I went off in search of a garage where I could buy some petrol.我跑去寻找加油站买汽油。
The tourists sought out a shady spot where they sat down and rested. 旅游者找到一块阴凉的地方坐下休息。
The reason why she didn't get the job was that her English was not very good.她没得到这个工作的原因是她的英语不是很好。
The reason why he is late is that his car went wrong.他迟到的原因是他的汽车坏了。
That is the reason why we must go now.这就是我们现在必须走的理由。
This is one of the basic reasons why some of our work can't be done well.这是我们有些工作做不好的一个基本原因。 This is the way how he always treats me. 他一贯就是这样对待我的。
That's the way how I learn English.那就是我学英语的方法。
主语从句有哪些
一、定义
在句子中担当主语的从句，就叫主语从句。通常放在主句谓语动词之前，或由形式主语it代替、而本身放在句子末尾。
二、连接词
根据主语从句所缺句子成分的情况，主语从句会由不同的连接词连接，常见的连接词有：that、if/whether、连接代词、连接副词和what。
三、that引导的主语从句
（一）
当主语从句本身不缺成分时，就会使用that来连接。此时，that只起连接作用，但不能省略。如：
That he will come to our village tomorrow surprises us all. （他要来我们村，让我们都感到很惊讶。）That she used to be a spy is known to all. （大家都知道，她过去是个间谍。）
这种情况下，因为主语从句往往比谓语部分更长，会导致整个句子头重脚轻，所以经常会用it作为形式主语来替换主语从句，而把主语从句放到句末。此时，that也只起连接作用，但可以省略。比如，以上两个句子就存在这个问题，所以一般都会改为：
It surprises us all (that) he will come to our village tomorrow.It is known to all (that) she used to be a spy.
（二）
如果句子是疑问句，则必须用带形式主语it的结构。如：
That she is our English teacher is true. （她是我们的英语老师，是真的。）That he has been there twice is a fact. （他去过那儿两次了，是真的。）
这两句话如果改为一般疑问句时，不能这么改：
错误：Is that she is your English teacher true?错误：Is that he has been there twice a fact?
而是要改为含有形式主语it的句子：
Is it true that she is your English teacher?Is it a fact that he has been there twice?
（三）
在形式主语it引导的主语从句结构“It is+形容词/名词/名词短语等+that主语从句”中，如果is后面的表语是表示重要或必要等（如important、necessary、a necessity等）含义时，that从句中的谓语动词一般要采用“should+do”的虚拟语气形式，should经常省略。如：
It is imperative that we (should) make a quick decision. （我们要尽快做出决定。）It is necessary that we (should) learn English well. （我们必须学好英语。
四、if/whether引导的主语从句
当主语从句本身含有是否的意思时，连接词必须用if或whether。但是，如果主语从句位于句首时，只能用whether，不能用if。如：
Whether it will do good to us remains to be seen. （是否对我们有害还要看一看。）
这种情况下，因为主语从句也比较长，会导致头重脚轻的情况，所以也经常用形式主语it来代替，而把主语从句放到句末去。此时，连接词除了用whether外，也可以用if。如上面的句子就可以改为：
It remains to be seen if/whether it will do gomizCORyRJrod to us.
再比如：
Whether the band would visit our city was still a mystery. （这个乐队是否会来我们城市仍然是个谜。）
上面的句子可以改为：
It was still a mystery if/whether the band would visity our city.
五、连接代词引导的主语从句
常用来连接主语从句的连接代词有：who、whom、whose、which、whoever、whomevewww.souquanme.comr、whichever等。这些连接代词在从句中有的作主语，有的作宾语，有的作定语。如：
作主语：Who won the搜趣网 game hasn''t been announced yet. （谁赢得了比赛，还没宣布。）作宾语：Whom you talked to just now will be confirmed later. （你刚才跟谁说话了，之后会证实的。）
作定语：Whichever nation explodes an atomic bomb will engage the whole world in war. （无论哪个国家使用原子弹都会使全世界卷入战争。）
为了避免头重脚轻，这种情况下的主语从句也经常用形式主语it来代替，而把主语从句放到句末。但是，连接代词始终都不能省略。如上面的两句话可以改为：
It hasn''t been announced yet who won the game.It will be confirmed later whom you talked to just now.
It will engage the whole world in war whichever nation explodes an atomic bomb.
六、连接副词引导的主语从句
能够用来连接主语从句的连接副词主要有：when、where、why、how等。这些连接副词在主语从句中作状语。如：
When they will arrive at the station doesn''t matter. （他们何时到站没有什么关系。）How the accident happended is still unknown. （这场事故是怎么发生的，还不清楚。）
Why he was absent from the meeting remains a mystery. （他为什么没有参加会议仍然是个谜。）Where I will spend my summer is none of your business. （我在哪里过暑假不关你的事。）
为了避免头重脚轻，上面的句子可以改为：
It doesn''t matter when they will arrive at the station.It is still unknown how the accident happended.It remains a mystery why he was absent from the meeting.It is none of your business where I will spend my summer.
七、what引导的主语从句
与that不同的是，what除了可以引导主语从句起连接作用外，还同时在从句中充当主语或宾语。如：
作主语：What really matters is that she needs a shower at once. （真正重要的是，她得马上冲个澡。）
作宾语：What I am worried about is their taking my son to France. （我担心的是他们要把我儿子带到法国去。）
有的时候，whatever也可以用来连接主语从句。如：
Whatever you do makes no difference to me. （你做什么对我来说都没区别。）
需要注意的是，当what或whatever引导主语从句时，一般不能改为由形式主语it来引导的句子。
在句子中担当主语的从句，就叫主语从句。通常放在主句谓语动词之前，或由形式主语it代替、而本身放在句子末尾。
二、连接词
根据主语从句所缺句子成分的情况，主语从句会由不同的连接词连接，常见的连接词有：that、if/whether、连接代词、连接副词和what。
三、that引导的主语从句
（一）
当主语从句本身不缺成分时，就会使用that来连接。此时，that只起连接作用，但不能省略。如：
That he will come to our village tomorrow surprises us all. （他要来我们村，让我们都感到很惊讶。）That she used to be a spy is known to all. （大家都知道，她过去是个间谍。）
这种情况下，因为主语从句往往比谓语部分更长，会导致整个句子头重脚轻，所以经常会用it作为形式主语来替换主语从句，而把主语从句放到句末。此时，that也只起连接作用，但可以省略。比如，以上两个句子就存在这个问题，所以一般都会改为：
It surprises us all (that) he will come to our village tomorrow.It is known to all (that) she used to be a spy.
（二）
如果句子是疑问句，则必须用带形式主语it的结构。如：
That she is our English teacher is true. （她是我们的英语老师，是真的。）That he has been there twice is a fact. （他去过那儿两次了，是真的。）
这两句话如果改为一般疑问句时，不能这么改：
错误：Is that she is your English teacher true?错误：Is that he has been there twice a fact?
而是要改为含有形式主语it的句子：
Is it true that she is your English teacher?Is it a fact that he has been there twice?
（三）
在形式主语it引导的主语从句结构“It is+形容词/名词/名词短语等+that主语从句”中，如果is后面的表语是表示重要或必要等（如important、necessary、a necessity等）含义时，that从句中的谓语动词一般要采用“should+do”的虚拟语气形式，should经常省略。如：
It is imperative that we (should) make a quick decision. （我们要尽快做出决定。）It is necessary that we (should) learn English well. （我们必须学好英语。
四、if/whether引导的主语从句
当主语从句本身含有是否的意思时，连接词必须用if或whether。但是，如果主语从句位于句首时，只能用whether，不能用if。如：
Whether it will do good to us remains to be seen. （是否对我们有害还要看一看。）
这种情况下，因为主语从句也比较长，会导致头重脚轻的情况，所以也经常用形式主语it来代替，而把主语从句放到句末去。此时，连接词除了用whether外，也可以用if。如上面的句子就可以改为：
It remains to be seen if/whether it will do gomizCORyRJrod to us.
再比如：
Whether the band would visit our city was still a mystery. （这个乐队是否会来我们城市仍然是个谜。）
上面的句子可以改为：
It was still a mystery if/whether the band would visity our city.
五、连接代词引导的主语从句
常用来连接主语从句的连接代词有：who、whom、whose、which、whoever、whomevewww.souquanme.comr、whichever等。这些连接代词在从句中有的作主语，有的作宾语，有的作定语。如：
作主语：Who won the搜趣网 game hasn''t been announced yet. （谁赢得了比赛，还没宣布。）作宾语：Whom you talked to just now will be confirmed later. （你刚才跟谁说话了，之后会证实的。）
作定语：Whichever nation explodes an atomic bomb will engage the whole world in war. （无论哪个国家使用原子弹都会使全世界卷入战争。）
为了避免头重脚轻，这种情况下的主语从句也经常用形式主语it来代替，而把主语从句放到句末。但是，连接代词始终都不能省略。如上面的两句话可以改为：
It hasn''t been announced yet who won the game.It will be confirmed later whom you talked to just now.
It will engage the whole world in war whichever nation explodes an atomic bomb.
六、连接副词引导的主语从句
能够用来连接主语从句的连接副词主要有：when、where、why、how等。这些连接副词在主语从句中作状语。如：
When they will arrive at the station doesn''t matter. （他们何时到站没有什么关系。）How the accident happended is still unknown. （这场事故是怎么发生的，还不清楚。）
Why he was absent from the meeting remains a mystery. （他为什么没有参加会议仍然是个谜。）Where I will spend my summer is none of your business. （我在哪里过暑假不关你的事。）
为了避免头重脚轻，上面的句子可以改为：
It doesn''t matter when they will arrive at the station.It is still unknown how the accident happended.It remains a mystery why he was absent from the meeting.It is none of your business where I will spend my summer.
七、what引导的主语从句
与that不同的是，what除了可以引导主语从句起连接作用外，还同时在从句中充当主语或宾语。如：
作主语：What really matters is that she needs a shower at once. （真正重要的是，她得马上冲个澡。）
作宾语：What I am worried about is their taking my son to France. （我担心的是他们要把我儿子带到法国去。）
有的时候，whatever也可以用来连接主语从句。如：
Whatever you do makes no difference to me. （你做什么对我来说都没区别。）
需要注意的是，当what或whatever引导主语从句时，一般不能改为由形式主语it来引导的句子。
梦到鞋子脱胶是什么意思？有什么征兆？好不好？
鞋子开胶了应该怎么办呢?这是困扰非常多人的一个问题，因为每个人都必须穿鞋子，开胶成为换鞋最大的原因之一，那么如果做梦梦到鞋子脱胶是什么意思呢?下面就一起来看看吧!一、梦到鞋子脱胶的寓意 1、本命年的人梦到鞋子脱胶是什么意思?意味着心情未能安定，审进退而动，时机成熟进则有利。 2、做生意的人梦到鞋子脱胶是什么意思?代表得失参半，宜退守。若大投资处于困境中。 3、出行的人梦到鞋子脱胶是什么意思?建议往东南方山林或公共场所、学校找。 4、怀孕的人梦到鞋子脱胶是什么意思?预示生女，慎防不受风寒。 5、恋爱中的人梦到鞋子脱胶是什么意思?说明心情不稳定，忽冷忽热，互相信任婚姻可成。二、梦到鞋子脱胶的吉凶 【中吉】因勤勉而成功发展，名成利就之吉兆无疑。(但只怕人格、地格为凶数，则易生家庭之杂乱，再加以天地格水火相克，会恐好景不长，必有失败之一天)。 做梦梦见卖拖鞋好不好?梦到梦见卖拖鞋是什么意思三、梦到鞋子脱胶的宜忌 【宜】宜签合同，宜回家吃饭，宜看中医。 【忌】忌相亲，忌排队，忌手挽手。
什么是主语从句?
后接动词什么形式,谓语用单双数?主语从句
一、概述：在句子中起名词作用的各种从句统称为名词性从句。根据它们在句中的语法作用，这类从句又可分为主语从句、同位语从句、表语从句和宾语从句。
二、 几个共性问题：
1．连接方式
（1） 在由连词that, whether, if引导的名词性从句中，引导词在句中不做成分，在宾语从句和表语从句中，that可以省略。
（2） 在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中，其连接代词在句中起名词性作用，担当一定成分。
（3）在由连接副词when, where, why, how引导的名词性从句中，其连接副词在句中作状语。
2．whether和if的区别
（1）whether在引导的主语从句中可以置于句首，而if则不能。
（2）whether可以与or not连用，or not可以紧跟在whether之后，也可以置于从句末尾；if一般不能和or not连用。
（3）表语从句、同位语从句和介词宾语从句（即在系词be和介词之后），只能用whether连接，而不用if。
（4）从句是否定式时，一般用if, whether很少用在否定式从句中。
例如：I don’t care if he doesn’t come . 如果他不来，我也不介意。
The problem is whether we can carry out the plan.
问题是我们是否能实施这项计划。
三、 主语从句
1．主语从句主要有三类：
（1） 由连词that引导的主语从句。
例如：That you will win the medal seems unlikely.
你想获得奖牌看起来是不可能的。
That you are so indifferent bothers me.
你如此冷淡使我很烦恼。
That she survived the accident is a miracle.
她在事故中幸免于难简直是奇迹。
（2） 用连接代词或连接副词if, whether 引导的主语从句。
例如： Which of them escaped from the prison is still a mystery.
他们哪一个是从监狱里逃跑的，仍然是个谜。
When they will come hasn’t been made pubic.
他们什么时候来还不知道。
Whether she is coming or not doesn’t matter too much.
她来不来都无关紧要。
（3） 用关系代词引导的主语从句。
例如：What you need is more practice.
你所需要的是更多的训练。
What I want to know is this. 我想知道的就是这事。
Whatever we do is to serve the people.
我们无论做什么都是为人民服务。
主语从句可以直接放在主语位置上，也可以用it作形式主语，
而将从句放在句末（尤其是当谓语较短时）。
例如：That light travels in straight lines is known to all.
光沿直线传播，这是众所周知的事。
=It is known to all that light travels in straight lines.
众所周知光沿直线传播。
When the plane is to take off has not been announced .
飞机何时起飞还没有宣布。
= It has not been announced when the plane is to take off.
还没有宣布飞机何时起飞。
当what引导的主语从句表示“…的东西”时，一般不用it作形式主语。
错:It is a book what he wants.
对:What he wants is a book. 他想要的是本书。
如果带主语从句的句子是疑问式，则必须用it作形式主语的结构。
例如：Has it been settled who will be sent to carry out the task ?
谁将被派去执行这项任务决定了吗 ？
3．固定用法和译法
（1） It is +名词+从句
It is a fact that… 事实是……
It is good news that … ……是好消息
It is a question that … ……是个问题
It is common knowledge that … ……是常识
类似的名词还有：a pity；a wonder；a good thing； no wonder； surprise等。
例如：It is a mystery to me how it all happened.
这一切是怎么发生的是个谜。
It is common knowledge that the whale is not a fish.
鲸鱼不是鱼，这是常识。
It is no surprise that Bob should have won the game.
鲍勃会赢得这场比赛，这不足为奇。
（2） It is +形容词+从句
It is necessary that … 有必要……
It is clear that … 很清楚……
It is likely that … 很可能……
It is important that … 重要的是……
类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite;//www.souquanme.com unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.
例如：It is obvious that conductors and insulators are both important in industry.
很明显导体和绝缘体在工业中都很重要。
It is doubtful whether she will be able to come.
她是否能来令人怀疑。
It was really astonishing that he refused to talk to you .
他拒绝和你说话真是令人惊讶。
It is essential that he should be here by the weekend .
周末之前，他应该到这里是必要的。
It seems obvious that we can not go on like this.
很明显我们不能这样下去了。
（3） It is +过去分词+从句
It is said that … 据说……
It is reported that … 据报道……
It has been proved that … 已证明……
It must be proved that… 必须指出……
类似的过去分词还有：known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out,etc.
例如：It is thought that he is the best player.
大家都认为他是最好的选手。
It is estimated that the vase is 2000 years old.
据估计这个花瓶有2000年的历史。
It is used to be thought that a new star must be due to a collision between two stars. 过去一直认为新星是由于两颗星星之间碰撞产生的。
It has not been made clear when the new road is to be opened to traffic.
还没弄清楚这条路将开始通车。
（4） It +不及物动词+从句
It seems that … 好像是……
It happened that… 碰巧……
It follows that … 由此可见……
It has turned out that … 结果是……
类似的不及物动词还有：seem, appear, occur, follow, happen, turn out, etc.
例如：It turned out that nobody remembered the address.
结果是无人记得那个地址。
It now appears that they are in urgent need of help.
看起来他们急需帮助。
It does not matter if I missed my train, because there is another later.
没有赶上这趟火车没有关系，稍晚还有一趟。
It happened that I saw him yesterday.
碰巧我昨天看见他了。
当“及物动词 + 宾语”较短时，也可用这种结构。
例如：It shocked me that Peter did not tell anybody where he was.
让我吃惊的是彼得没有告诉任何人他在哪里。
It does not interest me whether you go or not.
我对你去不去不感兴趣。
It +某些固定结构+ 主语从句。
例如：It doesn’t make too much difference （It doesn’t make any difference / It doesn’t alter the situation），whether it rains or not . 下不下雨都没有多大关系。
It does not make any difference whether it rains or not .
下不下雨没什么分别。
It does not make the least difference to me what you do.
对我来说你做什么都无关紧要。
Is it of much consequence to you that Mr. Wang has failed to do it ? 王先生没有做成这件事对你有什么重要影响吗？
一、概述：在句子中起名词作用的各种从句统称为名词性从句。根据它们在句中的语法作用，这类从句又可分为主语从句、同位语从句、表语从句和宾语从句。
二、 几个共性问题：
1．连接方式
（1） 在由连词that, whether, if引导的名词性从句中，引导词在句中不做成分，在宾语从句和表语从句中，that可以省略。
（2） 在由连接代词who, whose, whom, which, what, whoever, whomever, whichever, whatever引导的名词性从句中，其连接代词在句中起名词性作用，担当一定成分。
（3）在由连接副词when, where, why, how引导的名词性从句中，其连接副词在句中作状语。
2．whether和if的区别
（1）whether在引导的主语从句中可以置于句首，而if则不能。
（2）whether可以与or not连用，or not可以紧跟在whether之后，也可以置于从句末尾；if一般不能和or not连用。
（3）表语从句、同位语从句和介词宾语从句（即在系词be和介词之后），只能用whether连接，而不用if。
（4）从句是否定式时，一般用if, whether很少用在否定式从句中。
例如：I don’t care if he doesn’t come . 如果他不来，我也不介意。
The problem is whether we can carry out the plan.
问题是我们是否能实施这项计划。
三、 主语从句
1．主语从句主要有三类：
（1） 由连词that引导的主语从句。
例如：That you will win the medal seems unlikely.
你想获得奖牌看起来是不可能的。
That you are so indifferent bothers me.
你如此冷淡使我很烦恼。
That she survived the accident is a miracle.
她在事故中幸免于难简直是奇迹。
（2） 用连接代词或连接副词if, whether 引导的主语从句。
例如： Which of them escaped from the prison is still a mystery.
他们哪一个是从监狱里逃跑的，仍然是个谜。
When they will come hasn’t been made pubic.
他们什么时候来还不知道。
Whether she is coming or not doesn’t matter too much.
她来不来都无关紧要。
（3） 用关系代词引导的主语从句。
例如：What you need is more practice.
你所需要的是更多的训练。
What I want to know is this. 我想知道的就是这事。
Whatever we do is to serve the people.
我们无论做什么都是为人民服务。
主语从句可以直接放在主语位置上，也可以用it作形式主语，
而将从句放在句末（尤其是当谓语较短时）。
例如：That light travels in straight lines is known to all.
光沿直线传播，这是众所周知的事。
=It is known to all that light travels in straight lines.
众所周知光沿直线传播。
When the plane is to take off has not been announced .
飞机何时起飞还没有宣布。
= It has not been announced when the plane is to take off.
还没有宣布飞机何时起飞。
当what引导的主语从句表示“…的东西”时，一般不用it作形式主语。
错:It is a book what he wants.
对:What he wants is a book. 他想要的是本书。
如果带主语从句的句子是疑问式，则必须用it作形式主语的结构。
例如：Has it been settled who will be sent to carry out the task ?
谁将被派去执行这项任务决定了吗 ？
3．固定用法和译法
（1） It is +名词+从句
It is a fact that… 事实是……
It is good news that … ……是好消息
It is a question that … ……是个问题
It is common knowledge that … ……是常识
类似的名词还有：a pity；a wonder；a good thing； no wonder； surprise等。
例如：It is a mystery to me how it all happened.
这一切是怎么发生的是个谜。
It is common knowledge that the whale is not a fish.
鲸鱼不是鱼，这是常识。
It is no surprise that Bob should have won the game.
鲍勃会赢得这场比赛，这不足为奇。
（2） It is +形容词+从句
It is necessary that … 有必要……
It is clear that … 很清楚……
It is likely that … 很可能……
It is important that … 重要的是……
类似的形容词还有：strange; natural; obvious; true; good; wonderful; possible; unlikely; quite;//www.souquanme.com unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.
例如：It is obvious that conductors and insulators are both important in industry.
很明显导体和绝缘体在工业中都很重要。
It is doubtful whether she will be able to come.
她是否能来令人怀疑。
It was really astonishing that he refused to talk to you .
他拒绝和你说话真是令人惊讶。
It is essential that he should be here by the weekend .
周末之前，他应该到这里是必要的。
It seems obvious that we can not go on like this.
很明显我们不能这样下去了。
（3） It is +过去分词+从句
It is said that … 据说……
It is reported that … 据报道……
It has been proved that … 已证明……
It must be proved that… 必须指出……
类似的过去分词还有：known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out,etc.
例如：It is thought that he is the best player.
大家都认为他是最好的选手。
It is estimated that the vase is 2000 years old.
据估计这个花瓶有2000年的历史。
It is used to be thought that a new star must be due to a collision between two stars. 过去一直认为新星是由于两颗星星之间碰撞产生的。
It has not been made clear when the new road is to be opened to traffic.
还没弄清楚这条路将开始通车。
（4） It +不及物动词+从句
It seems that … 好像是……
It happened that… 碰巧……
It follows that … 由此可见……
It has turned out that … 结果是……
类似的不及物动词还有：seem, appear, occur, follow, happen, turn out, etc.
例如：It turned out that nobody remembered the address.
结果是无人记得那个地址。
It now appears that they are in urgent need of help.
看起来他们急需帮助。
It does not matter if I missed my train, because there is another later.
没有赶上这趟火车没有关系，稍晚还有一趟。
It happened that I saw him yesterday.
碰巧我昨天看见他了。
当“及物动词 + 宾语”较短时，也可用这种结构。
例如：It shocked me that Peter did not tell anybody where he was.
让我吃惊的是彼得没有告诉任何人他在哪里。
It does not interest me whether you go or not.
我对你去不去不感兴趣。
It +某些固定结构+ 主语从句。
例如：It doesn’t make too much difference （It doesn’t make any difference / It doesn’t alter the situation），whether it rains or not . 下不下雨都没有多大关系。
It does not make any difference whether it rains or not .
下不下雨没什么分别。
It does not make the least difference to me what you do.
对我来说你做什么都无关紧要。
Is it of much consequence to you that Mr. Wang has failed to do it ? 王先生没有做成这件事对你有什么重要影响吗？
什么叫定语从句
英语中定语从句就是在复合句中起定语作用以修饰主句中的名词或代词的从句。学习定语从句，首先要弄清两个重要概念——先行词和关系词。
先行词是我们汉语中从来没有听过的一个新概念，它其实指的就是被定语从句所修饰的词。由于定语从句修饰名词或代词时，定语从句通常是后置的，所以人们就将放在定语从句前被定语从句修饰的名词或代词叫先行词。
关系词是用于引导定语从句的引导词。事实上，英语中的各类从句，不管性质如何，它们都需要有一个词来“引导”，正如人们给引导状语从句的词语取了个名字叫从属连词一样，人们也给引导定语从句的词语取了个名字，叫它关系词，因为它通常被放在先行词和定语从句之间起连接作用，以表明两者之间的修饰关系，同时它还在定语从句中充当一定的句子成分。
先行词是我们汉语中从来没有听过的一个新概念，它其实指的就是被定语从句所修饰的词。由于定语从句修饰名词或代词时，定语从句通常是后置的，所以人们就将放在定语从句前被定语从句修饰的名词或代词叫先行词。
关系词是用于引导定语从句的引导词。事实上，英语中的各类从句，不管性质如何，它们都需要有一个词来“引导”，正如人们给引导状语从句的词语取了个名字叫从属连词一样，人们也给引导定语从句的词语取了个名字，叫它关系词，因为它通常被放在先行词和定语从句之间起连接作用，以表明两者之间的修饰关系，同时它还在定语从句中充当一定的句子成分。
