Does he wash his clothes first?His friend wanted to know.把两句连成一句.

问题描述:

Does he wash his clothes first?His friend wanted to know.把两句连成一句.
是只有特殊疑问词才可以后加主语+谓语吗?

一般疑问句变成从句用 if 或者 whether 连接
His friend wanted to know if he washed his clothes first.