I don't know what is wrong with him ?I don't know what is the matter with him ?这里从句是不是不用再改语序了。

热心网友

不用变 , 因为WHAT 在从句中做主语.eg something is wrong with sb/sth. Something is the matter with sb/sth.从句中主谓不倒装．

热心网友

语序不变