Mary wants to know where does Bob lives.
问题描述：
Mary wants to know where does Bob lives.
答
这句话语法错误 ：改正后
Mary wants to know where Bob lives.
know是及物动词后面接宾语从句,宾语从句使用陈述语序,即：主+谓+宾语 的顺序
where does Bob lives.是疑问句 我们称之为疑问语序,需要把does 去掉