1、它的定义：
宾语从句是名词性从句的一种。在主从复合句中充当宾语，位于及物动词、介词或复合谓语之后的从句称为宾语从句。
2、动词后的宾语从句
I don't know what he wants.
3、介词后的宾语从句
I'm thinking about who is the right person for the position.
4、形容词后的宾语从句
He's sure she will win the game.
5、宾语从句的引导词
连词：that (that 常可省略),whether, if
代词：who, whose, what ,which
副词：when ,where, how, why 等。
6、宾语从句的语序
宾语从句的语序是陈述句语序即：连接代词/副词+主语+谓语+其他成分。
例句：I knows that she is busy.
