谁能告诉我什么是宾语从句？有几种，请归纳！

Answer 1

宾语从句要点盘点

一、宾语从句的语序必须是陈述语序。如：�
Do you know why winter is colder than summer?你知道为什么冬季比夏季冷吗?�
二、宾语从句与主句的时态要相互呼应。�
主句是现在或将来时态时，从句可用任何所需要的时态。主句是过去时态时，从句要用表示过去的相应的时态。但如果从句中有明确表示过去的时间状语，则从句应用一般过去时，不用过去完成时；如从句表达的是客观规律或真理时，用一般现在时。如：�
He said he had finished his studies when the war broke out.他说战争爆发时，他已经完成了学业。�
He said he would spend his holiday in Dalian.他说他将在大连度假。�
She said that the earth moves around the sun.她说地球围绕太阳转。�
三、如宾语从句有自己的宾语补足语，则用it作形式宾语，而把宾语从句后置。其句型为：“主语+谓语+it+补足语+宾语从句”。如：� We think it important that we should master at least one foreign language.我们认为掌握至少一门外语是重要的。�
注意：(1)连词that引导的名词性从句很少作介词的宾语，只用在except,but和in等少数几个介词后。其它一些介词的宾语从句如由连词that引导，则需用it先行一步，作形式宾语。如：
He is a good student except that he is careless.他是个好学生，只不过有点粗心。�
See to it that children don't catch cold.当心孩子别感冒了。� (2)that引导表语从句时，在句中无词义，只起连接作用，但不可省去。His idea is that we should go there at once.他主张我们立即去那儿。�
四、连词whether可引导主语从句、宾语从句和表语从句，不可省。if引导宾语从句。

参考资料：http://www.chinatin.net/Article/ShowArticle.asp?ArticleID=815

Answer 2

宾语从句就是用一个句子来充当谓语动词的宾语,有三种情况:
1. 从句是陈述句,用that引导,也可以省略.
e.g. I know he will come tomorrow.
I know that he won't come tomorrow.
2. 从句是一般疑问句,用if或whether引导,后面的句子用陈述句语序.
e.g. I don't know if/whether he will come tomorrow.
3. 从句是特殊疑问句,用疑问词引导,后面的句子用陈述句语序.
e.g. I don't know when he will come.
I doubt what he will do next.

Answer 3

宾语从句就是从句在整个句中起名词作用,并做为这个句子的宾语成份.你主要就是要弄清它的引导词,有的引导词是省略了的.