主语从句用法及其讲解，主语从句

主语从句用法及其讲解

一、When we shall hold our sports meet is not decided.

二、主语从句使用陈述语序，其通常结构为“引导词 + 主语 + 谓语 + 其他成分”;但当连接代词同时充当从句主语时，其结构为“连接代词 + 谓语 + 其他成分”，如句1、2。

三、有时用it作形式主语，将主语从句后置。

四、It is uncertain whether the artist can do it or not.

五、将No matter who改为Whoever。引导让步状语从句时二者可互换，但引导名词性从句时只能用whoever。

六、可以引导主语从句的连接副词主要有：where, when, how, why等，如句6。

七、whether引导主语从句时意为“是否”，通常不能用if来代替,如句4;

八、That the earth travels round the sun is a well-known fact.

九、That the professor said is of great importance.

一十、What were your problems a year ago has now become mine.

一十一、引导主语从句的词有连词that, whether;连接代词who, whose, whom, whoever, what, which等;连接副词where, when, whenever, wherever, how, why等。

一十二、请观察下列句子，注意划线部分句子的意义及用法。

一十三、It + be + 名词 + that 从句， 如句8;

一十四、[归纳总结]

一十五、Who will go to the concert is not known.

一十六、[常见错误展示] 下列各句均有一处错误，请改正并分析错误的原因。

一十七、主语从句学习指导

一十八、If she’s coming or not doesn’t matter much.

一十九、No matter who breaks the rule will be punished.

二十、Where the young man has gone is not known.

二十一、[寻规找矩] 请观察下列句子，注意主语从句的用法。

二十二、That she was chosen made us very happy.

二十三、[解析与拓展]

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

二十五、[小结归纳]

二十六、Light travels faster than sound is common knowledge.

二十七、Whether she will come or not is still a question.

二十八、将That改为What。that引导主语从句时无词义。What the professor said表示“教授所说的”。

二十九、在句首加That(并将Light改为light)。that虽无词义但引导主语从句位于句首时不能省略。

三十、It + be + 形容词 + that 从句， 如句7;

三十一、It was requested that everyone made a speech at the meeting.

三十二、It + be + 动词的过去分词 + that 从句， 如句9。

三十三、Who will act the lead in the play has not been decided yet.

三十四、It is said that President Jingo will visit our school next week.

三十五、有时为避免句子头重脚轻，常用it作形式主语，代替主语从句放在句首，而把主语从句置于句末。常用句型如下：

三十六、When and where the meeting will be held still remain a question.

三十七、that引导主语从句时无词义，也不充当任何成分，但通常不可以省略，如句3;

三十八、[寻规找矩]

三十九、It is a pity that she has made such a mistake.

四十、将If改为Whether 。if, whether都可表示“是否”，但if不能引导位于主句之前的主语从句，它可以引导位于主句之后带有形式主语it的主语从句。

四十一、Which book they will choose is still unknown.

四十二、常见句型

四十三、语序

四十四、将will置于trees之后。主语从句要用陈述句语序。

四十五、可以引导主语从句的连接代词主要有：who, whom, whose, what, which, whatever, whoever等，如句5;

四十六、Where will the trees be planted has not been decided.

四十七、引导词

四十八、It’s strange that he knows nothing about it.

四十九、It is not yet decided when and where the test will be given.

主语从句