Do you know when my birthday is?

题目

Do you know when my birthday is?
这也是一个宾语从句吗?
为什么不是Do you know when is my birthday ?
请大家讲一讲有关的语法
谢谢

答案

when my birthday is是宾语从句.记住,在宾语从句中,句子的语序必须用陈述句语序（与疑问句语序相对应）,也就是说不用倒装.看例子：
What is he doing?
Tell me what he is doing.
Are you a teacher?
Do you know if he is a teacher.