i don't know where he comes from. 为什么用where呢？

• I don’t know where is he from. 或 I don’t know where he is from. 哪个对
• I don't know where he is 中的where做的什么成分呀？
• i dont know where is he还是i dont know where he is
• i have no idea where he comes from为什么填where不填that

I don’t know where is he from. 或 I don’t know where he is from. 哪个对

第二个正确

这是个含有宾语从句的复合句，起结构是：主句+ 连接词+ 宾语从句（ 宾语从句用陈述语序）

所以： I don't know where he is from? 正确，意思是：我不知道他来自哪？

祝你学习进步，更上一层楼，快乐每一天！(*^__^*)

I don't know where he is 中的where做的什么成分呀？

表语

i dont know where is he还是i dont know where he is

i dont know where he is

这是陈述句。表示我也不知道他在哪里

这牵扯到宾语从句的问题,在宾语从句中,总有主句“I don't know”是主句,后面的从句语序要还原为陈述语序,即“主+谓+宾”

例：1.how old is he?Tell me how old he is .

2.when will he come?Do you know when he will come?

i have no idea where he comes from为什么填where不填that

I have no idea where he comes from.

这是宾语从句

引导词是 where

根据come from 来自可知

句子意思是 我不知道他来自哪里。