I think he will come back( this afternoon).对括号内的提问 ()do you think he ()()back?

问题描述:

I think he will come back( this afternoon).对括号内的提问 ()do you think he ()()back?

(When)do you think he( wil)l(come)back?
你局的他什么时候会回来呢?
对时间提问,疑问词用when

When will

是对时间的提问,所以是:
(When)do you think he (will) (come)back?

Whend do you think he will come back?