宾语从句就是一个句子的宾语部分由另外一个句子来充当，当使用宾语从句时必须要有引导词来引导，可以说引导词是宾语从句的关键。那么宾语从句有哪些用法呢？我们就一起来看看。

01、当宾语从句为陈述句时，引导词就用that，在句子中起连接作用，无实意。如：He said that he was a student.

02、当宾语从句表示一般疑问语气，有是否，能否的意思时。从句连词用whether或者if做引导词，通常情况下可以互换。
如：I don't know whether/if I should go to the party tomorrow.

03、表示特殊疑问语句用特殊疑问词引导。包括疑问代词和疑问副词。
疑问代词有：I don't know whether/if I should go to the party tomorrow等
如：I don't know what they want.
疑问副词有：I don't know whether/if I should go to the party tomorrow等
如：I told him where he should go.

04、宾语从句可做动词宾语，介词宾语，及某些形容词甚至是副词的宾语。
如：He said that he was a student.(that从句是said的宾语)