宾语从句一般用什么连接词？

宾语从句是名词性从句，它的连接词有三类：
1.连词that ,if/whether.这三个连词在宾语从句中都不充当成分。that没有任何意义，而whether/if有是否的意思.
如:I don't know (that) the man is his father.
I wonder if he will come tomorrow.
2.连接代词what ,which,who,whose,whatever,whichever....这些连接代词在宾语从句从当主语、宾语或表语。
如：He can't remember what he did yesterday>
3.连接副词
when，where，why......这些副词在从句中充当状语。
如：The teacher didn't know when he came in.

宾语从句：
连接代词
连接代词主要有who,whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等.
连接副词
连接副词主要有when,where,why,how,whenever,wherever,however等.

定语从句：which，that，who

陈述句用THAT连接，不过常常省略掉。。。。疑问句用疑问词who,whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever等连接.但是要用陈述句的语序
如：i don't know where the bank is.
he doesn't know what your name is.等

从句是特殊疑问句，就用特殊疑问词连接
一般疑问句用if 或 whether