表语从句的句子 造一个表语从句的英语句子
一、表语表达法例句来几句
表语
表语是用来说明主语的身份、性质、品性、特征和状态的,表语常由名词、形容词、副词、介词短语、不定式、动词的-ing、从句来充当,它常位于联系动词（be, become, appear, seem等）之后.
一.名词作表语
Africa is a big continent.
非洲是个大洲.
That remains a puzzle to me.
这对我还是个难题.
二.代词作表语
What’s your fax number?
你的传真号是多少?
三.形容词作表语
I feel much better today.
我今天感觉好多了.
四.数词作表语
She was the first to learn about it.
她是第一个知道的人.
五.不定式或ing形式作表语
Her job is selling computers.
她的工作是销售电脑.
Our next step was to get raw materials ready.
我们下一步是把原料准备好.
六.介词短语作表语
The patient is out of danger.
病人脱险了.
I don’t feel at ease.
我感到不自在.
七.副词作表语
The sun is up.
太阳升起来了.
I must be off now.
现在我得走了.
八.从句作表语
This is what he said.
这就是他所说的话.
不定式作表语
作表语的不定式短语通常是说明主语的内容,这时主语通常是如下名词：
hope, idea, job, plan, wish, aim, purpose, thing, business
The purpose of new technologies is to make life easier, not to make it more difficult.
新技术的目的是使生活更便利,而不是更繁琐.
Her wish is to become a singer.
她的愿望是当一名歌手.
Our plan is to finish the work in two weeks.
我们的计划就是在两星期内完成这项工作.
表语从句
在句子中起表语作用的从句叫做表语从句.表语从句的引导词和主语从句的引导词相同.
What the police want to know is when you entered the room.
警察想知道的是你什么时候进的房间.
The trouble is that we are short of funds.
困难是我们缺乏资金.
This is what we should do.
这是我们应当做的.
That's why I want you to work there.
那就是我要你在那儿工作的原因.
His first question was whether Mr. Smith had arrived yet.
他的第一个问题是史密斯先生到了没有.
as if, as though, because也可用来引导表语从句.
She seems as if she had done a great thing.
她看起来好像做了一件大事.
It is because you eat too much.
那是因为你吃得太多了.
ing形式作表语
ing形式作表语表示泛指意义的动作,不定式作表语表示一次性的动作.
My hobby is growing flowers.
我的爱好是种花.
My favourite sport is playing tennis.
我喜爱的运动是打网球.
比较：
What I am going to do is to play tennis this afternoon.
我今天下午要做的事是打网球.
ing形式作表语：注意事项
在句型"主+系+表"中,若主语和表语都是非谓语形式时,主语和表语要取得一致.如：主语
是ing形式表语也应是ing形式,主语是不定式时表语也应是不定式.
Seeing is believing.
To see is to believe.
眼见为实.
(误) Seeing is to believe.
ing形式作定语
ing形式可以作名词的前置定语,ing形式短语作后置定语.
ing形式作前置定语
a swimming pool
a teaching method
ing形式短语作后置定语
Do you know the man standing at the entrance?
你认识站在入口处的那个人吗?
There were a lot of people boating on the lake.
湖上有许多正在划船的人.
虚拟语气：表语从句
主语是idea, notion, proposal, suggestion, request等名词时,
作表语从句的动词为原形动词或should+原形动词.
My suggestion is that we(should) go and help him.
我的建议是我们应该去帮助他.
Our only request is that this should be settled as soon as possible.
我们唯一的请求就是尽快解决这个问题.
二、造一个表语从句的英语句子
一、表语从句的定义：
表语从句放在连系动词之后，充当复合句中的表语。
二、表语从句的构成：
关联词+简单句
三、引导表语从句的关联词的种类：
可接表语从句的连系动词有be，look，seem，sound，appear等。
例句：
The question remains whether they will be able to help us.
问题还是他们能否帮我们。
At that time，it seemed as if I couldn't think of the right word.
当时，我似乎怎么也想不出一个恰当的字眼来。
2.从属连词whether，as，as if/ though引导的表语从句。
例句：
He looked just as he had looked ten years before.
他看起来还与十年前一样。
It sounds as if someone is knocking at the door.
听起来好像有人在敲门。
3. because，why引导的表语从句。
例句：
That's because he didn't understand me.
那是因为他没有理解我。（That's because…强调原因）
That's why he got angry with me.
那正是他对我生气的原因。（That's why…强调结果）
4.连接代词who，whom，whose，what，which，whoever，whatever，whichever
连接副词 where，when，how，why
例句：
The problem is who we can get to replace her.
问题是我们能找到谁去替换她呢。
The question is how he did it.
问题是他是如何做此事的。
5.从属连词that
The trouble is that I have lost his address.
麻烦是我把他的地址丢了。
三、英语语法:表语从句的用法
导语：表语从句在一个复合句中，从句作的是主句的表语成分。下面我为您收集整理了英语表语从句的用法，希望对您有帮助!
表语从句的定义：A.表语从句就是用一个句子作为表语。说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当，和连系动词一起构成谓语。
例句：The problem is when we can get a pay rise.问题是，当我们可以得到加薪。
B.连接表语从句的连接词有：that, what, who, when, where, which, why。例句：
He has become what he wanted to be ten years ago.
他已经成为了他10年前想成为的。
She has remained where I stood yesterday for an hour.
她一直在我昨天站的地方站了一个小时。
His suggestion is that we should stay calm.
他的建议是，我们应该保持冷静。
The question is when he can arrive at the hotel.
问题是，他什么时候可以到达酒店。
表语从句的.注意事项：A.表语从句一定要用陈述语序。
False: The question is when can he arrive at the hotel.
Right: The question is when he can arrive at the hotel.
B.不可以用if，而用whether连接表语从句(as if例外);
引导宾语从句时可以互换if/whether，位于介词后要用whether;
位于句首时要用whether;
引导表语从句，主语从句，同位语从句时要用whether。
False: The question is if the enemy is marching towards us.
Right: The question is whether the enemy is marching towards us.
Right: It looked as if he had understood this question.
C.不像宾语从句，在有表语从句的复合句中，主句时态和从句时态可以不一致。
Right: The question is who will travel with me to Beijing tomorrow.
Right: The question is why he cried yesterday.
D. that在表语从句中不可以省掉。
表语从句的基本用法：表语从句只能置于主句之后，而主句的动词只能是联系动词。
名词性从句在be等系动词后作表语时被称为表语从句，例如：
The problem is how we can get the things we need.问题是我们怎样能弄到我们需要的东西。(how在表语从句中充当方式状语)
The scissors are not what I need.这把剪刀不是我所需要的。(what在表语从句中充当宾语)
What I told him was that I would find him a good play.我告诉他的是我会给他找个好剧本。(what在主语从句中作直接宾语，that作为表语从句的引导词在该表语从句中不充当句子成分，不能省略)
That is what I want to tell you.那就是我想要对你讲的。(what在表语从句中充当直接宾语)
That is why she failed to pass the exam.那就是她考试不及格的原因。(why在表语从句中充当原因状语)
注意：“That is why...”是常用句型，意为“这就是……的原因/因此……”，其中why引导的名词性从句在句中作表语，该句型通常用于针对前面已经说明过的原因进行总结，又如：That is why you see this old woman before you know, Jeanne.珍妮，这就是现在这个老太婆出现在你面前的原因。(前文提到Jeanne对老妇人显得苍老憔悴深感诧异，说话人对她讲述了其中的原因之后，用这一句来进行概括)。
下面是两个与“That is why...”形式相似的结构，它们与“That is why...”结构之间的关系要能够辨析清楚：
(1)“That is why...”与“That is the reason why...”同义，只不过从语法结构上讲，“That is the reason why...”中why引导的是—个定语从句，将其中的the reason去掉则与“That is why...”结构一样，例如：
That is(the reason) why I cannot agree.这就是我不能同意的理由。
(2)“That is because...”句型中从属连词because引导的名词性从句在此作表语，这也是个常用句型，意为“这就是为什么……/因为……”。“That is because...”与“That is why...”之间的不同在于“That is because...”指原因或理由，“That is why...”则指由于各种原因所造成的后果，例如：
He did not see the film last night. That is because he had to help his little sister with her homework.昨天晚上他没有去看电影，那是因为他得帮助他的妹妹做作业。(第一句话说明结果，第二句话说明原因)
He had seen the film before. That is why he did not see it last night.他以前曾看过那部电影，因此他昨天晚上没有去看。(第一句话说明原因，第二句话说明结果)