谁能给8句主语从句的例句..

Question

如题..

Answer 1

主语从句
　　主语从句(Subject Clause)
　　定义:如果一个句子在复合句中充当一个主语,那么这个句子就是主语从句.
　　第一部分：常规主语从句，即句子在复合句中充当一个主语
　　（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.
　　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单三,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 have 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 have 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 have seen the film)
　　（13）It happened that the two cheats were there. (=The two cheats happened 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+have done)例句4,5,6,11.
　　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，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
　　It 作形式主语代替主语从句，主要是为了平衡句子结构，主语从句的连接词没有变化。而it引导的强调句则是对句子某一部分进行强调，无论强调的是什么成分，都可用连词that。被强调部分指人是也可用who/whom。例如：
　　It is a pity that you didn’t go to see the film.
　　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 is ＋不及物动词＋从句
　　It seems that… 似乎…
　　It happened that… 碰巧…
　　(4) it ＋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 happens…, 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 leave?
　　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 leave?
　　(2)时间的表达方式：8：19(nineteen 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 leave sth +地点
　　I left my book in my classroom yesterday.
　　(5)may I have 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，而是要采访上面的问法。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。

Answer 2

主语从句讲解

1. 主语从句的语序

主语从句要求使用陈述句语序，而非一般疑问句语序。如：

What surprised me most was that the little girl could play the violin so well.

使我感到惊讶的是这个小女孩的小提琴拉得太好了。

How he was successful is still a puzzle.

他是如何成功的仍然是个谜。

2. 连接词的选用

（1）that和what的选用

that和what都可引导主语从句。what除起连接作用外，还在名词性从句中充当某些成分，可作从句的主语、宾语或表语。而that在名词性从句中不充当任何成分，无词义，只起连接词作用。如：

What he wants is a book.

他想要的是一本书。

That light travels in straight lines is known to all.

众所周知，光线沿直线运行。

（2）if和whether的选用

引导主语从句，不能用if，只能用whether。如：

Whether we will hold a party in the open air tomorrow depends on the weather.

我们明天是否在户外开晚会要看天气而定。

（3）其它连接代词和副词的选用

根据主语从句的具体意义，正确的选择who, which, when, where, why, how等连接词，这些连接词既有疑问含义，又起连接作用，同时在从句中充当各种成分。如：

When we shall hold our sports meet is not decided.

我们何时举行运动会还没有决定。

Who broke the glass yesterday is not clear.

还不清楚昨天谁打破了玻璃。

Which car you will choose to buy makes no difference.

你决定买哪一辆车都不会有任何区别。

（4）whatever / whoever的功用

whatever, whoever在主语从句中不含疑问意义。它引导主语从句，并在从句中作主语、宾语、表语等。whatever = anything that; whoever = anyone who。要注意和whatever, whoever引导的让步状语从句的区别。如：

Whoever breaks the law should be punished. （主语从句）（＝Anyone who breaks the law should be punished. ）

Whoever breaks the law, he should be punished. （让步状语从句）（＝No matter who breaks the law, he should be punished. ）

3. it构成的主语从句

（1）由连词that引导的主语从句，在大多数情况下会放到句子的后面，而用代词it作形式主语。如：

It is well-known that the earth moves around the sun.

众所周知，地球围绕太阳转。

需要注意的是，it作形式主语代替主语从句时，要注意和as引导的定语从句的区别。试比较：

It was reported that the US was under the terrorist attack. （主语从句，有that，无逗号）

As was reported, the US was under the terrorist attack.

（定语从句，无that，有逗号）

上两句意为“据报道，美国遭到恐怖分子的袭击”。

（2）常见用it作形式主语的复合句结构

It is a fact （a good idea / a pity / a shame / no wonder / good news…）that…如：

It”s a pity that you missed the film.

你没有看那部电影真是太遗憾了。

It is necessary （clear / true / strange/ important /wonderful / possible / likely…）that…

需要注意的是，这类主语从句中，谓语动词很多为“（should）＋动词原形”，即要用虚拟语气。如：

It is necessary that you （should）master the computer.

你很有必要掌握电脑。

It is important that a student learn English well.

学生学好英语很重要。

It”s clear that they badly need help.

很明显，他们急需援助。

It is likely that a hurricane will arrive soon.

飓风很可能马上就要到达了。

It is reported （well-known / hoped / thought / expected /said /believed/decided /suggested /ordered…）that…如：

It is said that he was killed in the earthquake. 据说他在地震中丧生了。

It seems （happened / appears / doesn”t matter / makes no difference / …）that …如：

It seems that they will win the game.

看起来他们好像会赢得这场比赛。

It makes no difference whether he will attend the meeting or not.

他是否会参加会议都无关紧要。