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Subject Clauses 主语从句

1主语从句;subject(谓语之前) 2宾语从句;object(谓语之后) 3表语从句;predicative(系动词之后) 4同位语从句 appositive(名词之后)

主语从句的定义:

主语

{ What he does is import

ant

His job is important.

.

在句中充当主语的从 句叫做主语从句。

Find the subject clauses in the following sentences, and think about what are the connectors (连接词) .

1That he will come is certain. 2Whether it will please them is not easy to say. 3What seems easy to some people seems difficult to others. 4Which side will win is not clear. 5Why he did it remains a mystery. 6When they will start is not known yet. 7How he became a great scientist is known to us all. 8Who will take part in the meeting has not been decided. 9Whoever breaks the law will be punished. 10Where she is from is unknown.

? 主语从句的引导词: ? ? ? ? ? ? ? ? ? 连词 that , whether 连接代词 who(ever), whom(ever), which(ever), what(ever) 连接副词 where ,when ,why ,how (根据从句在句子中的位置) 主语从句+谓语 主语从句的句序: it(形主)+that(真主)

主语从句的规则: 找出下列句子中的错误,并总结规律
例1.When will he come is not known. 正:When he will come is not known. 2.Where will he go is not yet fixed.
正:Where he will go is not yet fixed.

3. Why was Lily late is not important. 正:Why Lily was late is not important.
规则一:主语从句一律用陈述语序, 即主语在前,谓语在后。

If × Whether the solid shape would last or not was not clear. . if It was not clear whether the solid shape would last or not.
Real Subject Formed Subject Subject Clause

引导主语从句在句首只能用whether,
Conclusion:

有it作形式主语的whether/if都可以.

主语从句的规则: 与 that 引导主语从句 What
(1)_____you said yesterday is right. What (2) That _____she is still alive is a great news to all of us.

规则三:what引导名词性从句时在从 句中充当句子成分,如主语,宾语,表语, 而that则不然,它在句子中只起连接作 用,但不能省略。

注意: 由that 引导的主语从句有时为了使句
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:
1. That he will refuse this piece of advice is impossible. It is impossible that he will refuse this piece _______________________________________ of advice. _______________________________________

*it为形式主语
2.That they should like each other is natural. It is natural that they should like each other. _____________________________________

主语从句的规则:
例3. When he will come are a puzzle. 正:When he will come is a puzzle. 规则四:含主语从句的主句谓语动词多用 单数第三人称形式。

主语从句的规则:

1. What he needs is that book.
2. What he needs are some books.
规则四:what 引导的主语从句,可根据 表语决定主句动词的单复数形式。
(what 用法较特殊,需要记住。)

注意五:
“疑问词+ever”引导主、宾、表、状语从句 无论… “No matter +疑问词”只引导状语从句 无论谁违反法律将会受到处罚 Whoever breaks laws __________________ will be punished. 主语从句 No matter who breaks laws he will be punished ______________________, Whoever breaks laws 状语从句
逗号是状语从句的标志

主语从句的规则:
_______breaks the law should be punished. A. Who B. Whoever C. No matter who D. Anyone

试比较:Whoever breaks the schools rules, he must be punished. =No matter who breaks the school rules, he must be punished. 让步状语从句 规则五:whoever, whatever, whichever等词可以 引导主语从句, 但no matter who, no matter what 等用在让步状语从句中。在状语从句中:Whever=no matter who;whoever=anyone who.

这样就构成了下面一些常用句型: 1) It is + n. +从句 It is a pity/shame that... 遗憾的是…… It is a surprise that…令人惊奇的是… It is a fact that… …是事实 It is common knowledge that… …是常识 It is a pity that *_______________(很遗憾)we lost the match.

It is a fact that *______________(这是事实)he cheated in the exam.

2) It is + adj. +从句 It’s certain that… 肯定… It is possible that... 很可能…… It is unlikely that... 不可能…… It is obvious that… 很明显… It is necessary \important \natural\... that… +(should) +do… It is possible that *_________________(很可能)she will come back tomorrow. It is obvious that *_________________(很明显)this measure is effective.

Consolidation ------学法指导
依据“缺什么补什么”原则确定正确的连词。所谓 “缺什么补什么”是指从句与连词之间的关系。 如果句子中缺主语,指人用who,指物用what; 如缺宾语,指人用whom,指物用what;如缺时 间状语用when;地点状语用where;原因状语用 why;方式状语用how;定语用what或which; 什么都不缺用that 。Wether表“是否” 。

Summary:
Subject Clause

1. 用 that / whether / if/ /where / how / when /why / who /what/which/ how much / etc. 来连接主语从句. 2.That 在主语从句中不能省略. 3.引导主语从句在句首只能用whether,有it 作形式主语的whether/if都可以. 4.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.4种句型。 5.主语从句作主语时,谓语动词一般用单数 形式。

6)主语从句中用陈述语序,

7)“what”引导主语从句时,谓语动词:
常与其后的名词作表语一致 ,且根据句子的语境而定。 eg: 1. What you left are only several old books.

2. What you said is of great importance.
8) . 用于 It is important / natural / necessary / impossible that...句型中, 主语从句应使用虚拟语气, 用“should + 动词

原形”的形式, should有时可以省略。
9) . 在 It + be + suggested/advised/ordered/requested/ insisted/required 中, that从句的谓语也应该用

“should + 动词原形”的形式, should有时可以省略。

Thank you! Good-bye!


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