主语从句句子举例_主语从句的典型例句

1.主语从句的用法规则

2.主语从句是什么？

3.写作文的主语从句

4.什么是主语从句？举例说明一下并在例子中详细说明！

主语就是动作的发出者或状态的所有者，一般是名词代词做主语，

比如

（He ）is kind.

（The Apple ）is sweet.

主语从句就是用一个句子代替这个主语。

(What he knows) is not much.

(Why she left )is a mystery.

(How it hened) made me shocked.

主语从句的用法规则

主语从句的时态：不受主句的时态影响和限制。

（1）That he finished writing the composition in such a short time surprised us all.

（2）Whether we will go for an outing tomorrow remains unknown.

（3）Who will be our monitor hasn't been decided yet.

（4） Whom we must study for is a question of great importance.

（5）What caused the accident remains unknown.

（6）Whatever you did is right.

（7）Whose watch was lost is unknown.

（8）What we need is time.

（9）What we need are good doctors.

为了防止句子头重脚轻，通常把形式主语it放在主语位置，真正主语搁置于句末

（1）It is certain that he will win the match.

（2）It is true that he has made a very important discovery in chemistry.

（3）It is very likely that they will hold a meeting.

（4）It is strange that he should do that.

（5）It is important that we all should attend the meeting.

（6）It is strange that the man should he stuck to his silly ideas.

（7）It is a pity that we won't be able to go to the south to spend our summer vacation.

（8）It is still a mystery what caused the accident.

（9）It is said that he has gone to shanghai.(=He is said to he gone to shanghai)

（10）It is known to all that the gun powder was first invented by the Chinese.

（11）It is suggested that the work should be done with great care.

（12）It seems that he has seen the film.(=He seems to he seen the film)

（13）It hened that the two cheats were there. (=The two cheats hened to be there)

主语从句是什么？

主语从句(Subject Clause)

定义

在复合句中充当主语成分的句子叫做主语从句.

第一部分

常规主语从句,即句子在复合句中充当一个主语 主语从句的时态：不受主句的时态影响和限制. （1）That he finished writing the composition in such a short time surprised us all. （2）Whether we will go for an outing tomorrow remains unknown. （3）Who will be our monitor hasn't been decided yet. （4） Whom we must study for is a question of great importance. （5）What caused the accident remains unknown. （6）Whatever you did is right. （7）Who the watch belongs to was lost is unknown. （8）What we need is time. （9）What we need are good doctors. 小结: （1)引导主语从句连词有that,whether,who,what,whatever等 （2)连词位于句首不能省略 （3)主语从句大多数情况下视为第三人称单数,但也有例外,如例（9）

第二部分

为了防止句子头重脚轻,通常把形式主语it放在主语位置,真正主语搁置于句末 （1）It is certain that he will win the match. （2）It is true that he has made a very important discovery in chemistry. （3）It is very likely that they will hold a meeting. （4）It is strange that he should do that. （5）It is important that we all should attend the meeting. （6）It is strange that the man should he stuck to his silly ideas. （7）It is a pity that we won't be able to go to the south to spend our summer vacation. （8）It is still a mystery what caused the accident. （9）It is said that he has gone to shanghai.(=He is said to he gone to shanghai) （10）It is known to all that the gun powder was first invented by the Chinese. （11）It is suggested that the work should be done with great care. （12）It seems that he has seen the film.(=He seems to he seen the film) （13）It hened that the two cheats were there. (=The two cheats hened to be there) 小结: （1)以that 引出的主语从句,常以形式主语it引导. It is +形容词/名词/某些动词ed + that 从句. （2) 在有些that从句中要用虚拟语气 (should+do/should+he done)

主语从句的用法

主语从句与宾语从句两者的用法和在句中的作用是不同的,下面从它们的各自用法来介绍. 一．主语从句 主语从句 定义:在句子中担当主语的是一个从句,这个从句就叫做主语从句. 主语从句是在复合句中充当主语的从句,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. 1. It 作形式主语和it引导强调句的比较 ①主语从句常用it作形式主语,一般常用句型为：It is+{名词/形容词/过去分词}+主语从句例如： It is still a question whether she will come or not. It is strange that you should like him. It is still unknown which team will win the match. 另外,还有一些比较多见的结构： It turned out that……； It has been proved that……; It hened/occurred that……； It is well-known that……等等 ②而强调句则不同,它的结构是：It+be+被强调部分+that+句子的其余部分 强调主语：It is the times that produce their heroes.时势造英雄 强调宾语：It is English that Prof.Lin teaches us. 强调状语：It was in shanghai that I saw the film. 判断是否是强调句有一个方法,就是将that以后的“句子的其余部分”拿出来单独看,看有没有缺成分,缺的是什么成分,再把谓语动词后面that前面的那部分,带到你认为缺成分的地方,如果放进去是一句完整的句子了,那就说明是强调句. 2. 用it 作形式主语的结构 (1) It is ＋名词＋从句 It is a fact that … 事实是… It is an honor that …非常荣幸 It is common knowledge that …是常识 (2) it is ＋形容词＋从句 It is natural that… 很自然… It is strange that… 奇怪的是… (3) it ＋不及物动词＋从句 It seems that… 似乎… It hened that… 碰巧… (4) it is＋过去分词＋从句 It is reported that… 据报道… It has been proved that… 已证实… 3. 主语从句不可位于句首的五种情况 (1) if 引导的主语从句不可居于复合句句首. (2) It is said , (reported) …结构中的主语从句不可提前.例如： It is said that President Jingo will visit our school next week. (3) It hens…, It occurs… 结构中的主语从句不可提前.例如： It occurred to him that he failed in the examination. (4) It doesn’t matter how/whether …结构中的主语从句不可提前.例如： It doesn’t matter whether he is wrong or not. (5) 含主语从句的复合句是疑问句时,主语从句不可提前.例如： Is it likely that it will rain in the evening? 4. What 与that 在引导主语从句时的区别 What 引导主语从句时在从句中充当句子成分,如主语．宾语．表语,而that 则不然.例如： What you said yesterday is right. 二：宾语从句用以区分主语从句的几个特征： 1、引导词：what\which\whose\when\whether\if\where 2语序：宾语从句必须是用陈述语句. 如：I think that you must work harder. 宾语从句的引导词、连接词的区别、否定转移等现象. (1)表达时间的几个句型：一般用when或者是what time： What time will the train lee? 由于时刻都是固定的,也可以用一般现在时代替一般将来时： What time does the train lee? (2)时间的表达方式：8：19(nine past eight),7:57(three to eight),在时间的中间也可以加上分的单词(minutes) (3)had better +动词原型.意思是提要求,建议.但是上下级不能用这种方式,因为语气太重： You had better give up smoking . (4)sb lee sth +地点 I left my book in my classroom yesterday. (5)may I he your name(address\age)?一般询问对方的年龄、名字等,不要习惯以前的问法,这样很不礼貌,而是要访上面的问法.以前的习惯是：how old are you? \what's your name? (6)修饰名词的代词次序：限-描-大-形---年---颜----籍----物--------类+名词： this is a bridge. This is a beautiful bridge 补充：从句的语序永远是陈述句.

写作文的主语从句

主语从句，即主句中的主语由句子担任，常看作单数，为名词性从句的一种类型。引导词常有 what、who、whether、that 等，what 在从句中充当成分（主语、宾语），that 在从句中常只作为连词，不充当句子成分。

例：What she said makes us very unexpected.

（主语部分：What she said, ?引导词：what）

In fact, whether John will go for a picnic or not has no effect on our choice.

（主语部分：whether John will go for a picnic, ?引导词：whether）

Who will aain the first award still be unknown before the match is over.

（主语部分：Who will aain the first award, ?引导词：Who, ?时间状语从句：before the match is over）

注：

主语从句中时态不受主句影响。

形式主语也可看作主语从句，主语为连词后的从句部分。

什么是主语从句？举例说明一下并在例子中详细说明！

1. 找出下列文章中的所有主语从句

一共有4个主语从句。主语从句的意思就是句子的主语由一个句子来充当。

1. ( What it was to bee )was uncertain

2. (What is even more important) is that as the earth cooled down, water began to ear on its surface.

3. It was not immediately obvious (that water was to be fundamental to the development of life.)

it是形式主语

4. (What many scientists believe) is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas。

上面括号内的句子来充当句子的主语。

2. 主语从句有哪些

主语从句的定义：主语从句是指在复合句中充当主语的句子，它是名词的拓展，属于主语的第三个表达层次。所以，主语从句和名词一样通常是出现在谓语动词的前面。

例句1:Whether he will pass the examination is still unknown.他是否能够通过考试仍然不知道。

例句2:What he said inspired me a lot.他说的话让我受到了很大的鼓舞。

主语从句的引导词：主语从句的引导词与宾语从句，表语从句和同位语从句的引导词几乎相同（表语从句有几个特殊引导词除外）请参照本站文章表语从句的用法讲解。以下就按照引导词在主语从句中的意义和功能分别讲解。

that引导主语从句

例句1:That youth is wholly experimental is known to us all。 众所周知，青春就是探索的岁月。

例句2:That she finished reading an English novel surprised us all.她读完了一部全英文让我们大吃一惊。

Whether引导主语从句

例句1:Whether she will e to the party makes no difference.她来不来参加聚会都没有关系。

例句2:It makes no difference whether/if she will e to the party.她来不来参加聚会都没有关系。

Who, what, which引导主语从句

例句1:Who will be the leader of the team has not been decided yet. 谁会成为这个队的领头人还没定下来。

例句2:What the kids need is a peaceful growing environment. 孩子们需要的是一个和平的生长环境。

whose, what, which引导主语从句

例句1:Whose face will flush is the liar. 谁的脸红了谁就是骗子。

例句2:What goal you set now determines what your will gain in the future.你现在设立什么目标决定了你将来会有什么收获。

when, where, how, why引导主语从句

例句1:Why Tony did this remained a mystery. 为什么托尼做这件事仍然是个谜。

例句2:When we will he our winter holidays is still uncertain.我们什么时候放寒还不确定。

Wh-ever连接词引导主语从句

例句1:Whoever has a strong will is likely to bee successful.凡是有坚强意志的人都有可能成功。

例句2:Whatever is worth doing at all is wroth doing well.凡是值得做的事情就值得做好。

1）主语从句可直接位于主语的位置，如果从句较长，谓语又较短，可用it作形式主语，而将从句放在句末。常见的句型有： *It is a fact\a pity\a question\good news that... *It seems\ears\hened\has turned out that... *It is clear\important\likely\possible that... *It is said\reported\estimated\has been proved that... It is said that comic books create a connection between people of the same generation. It seems that the performance is very useful. 2)what引导的主语从句表示“...的东西时”。 What we lack is experience. 3)what,who,when,why,whether等词含有各自的疑问意义，但它们引导的主语从句，都用陈述语序。 How the plan is to be carried out should be discussed again. I did know why I felt like crying.