主语从句造句

主语从句造句：

1. How well the prediction will be validated by later performance depends

upon the amount and reliability of the information used.

这些预测以后将在多大程度上被之后的表现证实，取决于所采用信息的数量和可靠性。

2. It is often important that you make it clear what your particular role is

at a given time.

你要搞清楚在指定时期内你的特定角色是什么，这很重要。

3. It is reported that the unemployment rate is very high in many

developed countries because financial crisis.

据报道，由于金融危机，很多发达国家的失业率都很高。

4. That mental health is important to physical condition is a fact.

精神健康对身体状况很重要，这是一个事实。

5. That he finished writing the composition in such a short time surprised

us all.

他在这么短的时间内完成了写作使我们所有人都惊讶。

6. Whether we will go for an outing tomorrow remains unknown.

我们明天是否会去远足有待商榷。

7. What make the river more beautiful are the plants growing in the water.

为河水增色的是水里的荷花。

8. What struck me was that they have all suffered a lot.

主语从句

一、主语从句的连词分三类

（1）从属连词引导的主语从句 （that whether if）

that引导的主语从句:引导词that无含义/在句中不做成分/不可以省。That 引导主语从句通常用it 作形式主语。

例如：That you will win the medal seems unlikely.

That she survived the accident is a miracle.

whether 引导的主语从句: whether有含义(是否)/在句中不做成分/不可以省。

注意：引导主语从句，不能用if不能在开头，只能用whether。

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

Whether she is coming or not doesn’t matter too much.

（2） 用连接代词引导的主语从句

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.

例如：What you need is more practice.

Whatever we do is to serve the people.

注：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）

主语从句

一、主语从句的概念与类型

主语从句在复合句中作主句的主语,引导主语从句的词有从属连词that, whether以及连接代词who, what, which, whoever, whatever, whichever和连接副词when, where, why, how等.例如:

That she was chosen made us very happy.她当选了使我们很高兴.

What caused the accident is a complete mystery.是什么导致了这次事故还完全是一个谜.

Whether she will come or not is still a question.她是否来还是一个问题.

Which team will win the match is still unknown.哪个队会赢得这场比赛还不知道.

Whoever comes to the party will receive a present.参加聚会的每一个人都将收到一份礼物.

When they will start has not been decided yet.他们何时出发还没决定.

注意:上述例句中的主语从句都是放在句首,但有时为了使句子结构平衡,避免"头重脚轻",常用it作形式主语,而把从句放在后面.例如:

It is a pity that she has made such a mistake.她犯了这样一个错误,真是遗憾.

It depends on the climate whether they are going shopping today.他们是否今天去购物还得看天气情况.

这样就构成了下面一些常用句型:

1)It is + adj. / n. +从句

It is a pity/shame that...遗憾的是……

主语从句

在句子中担当主语的是一个句子，这个从句就叫作主语从句。主语从句可以由下列连词、连接代词和连接副词引导，且不能省略。

连词：that, whether 连接副词：when, where, how, why

连接代词：what, whatever, who, whoever 等

(1)由连词that, whether引导的主语从句

连词that, whether在从句中的作用只是引导主语从句，它在从句中不担任成分，不能省略，且由that, whether引导的主语从句，多用it做形式主语

e.g ①That the earth is round is true.=It is true that the earth is round. 地球是圆的，是一个事实。

②Whether he’ll come or not hasn’t been decided.

= It hasn’t been decided whether he’ll come or not.

(2)由连接代词或连接副词引导的主语从句

连接代词who, which和连接副词when, where, how, why都可以引导主语从句，它们分别在从句中担任主语、宾语和状语，不能省略，翻译时，不能把它们译为疑问句，由它们引导的主语从句，也可以用形式主语it引导

e.g ①Who let out the news remained unknown. =It remained unknown who let out the news.

谁泄漏了那个消息仍旧无人知道。

②When we’ll start is not clear. =It is not clear when we’ll start. 我们何时出发还不清楚。

(3)以关系代词what, whatever, whoever, whomever, whichever引导的主语从句不能用形式主语it引导，它们在句子中担任成分，不能省略，语序为陈述语序。