问题补充:
---Which of the following sentences is CORRECT?
A. I don’t know when will he come back tomorrow.
B. I have no idea when will he come back tomorrow.
C. I don’t know when he will come back tomorrow.
D. I have no idea when is he coming back tomorrow.
答案:
A. I don’t know when will he come back tomorrow.
B. I have no idea when will he come back tomorrow.
(答案→)C. I don’t know when he will come back tomorrow.
D. I have no idea when is he coming back tomorrow.
解析:句意:下面哪一个句子是正确的?我不知道他明天什么时候回来。宾语从句中用陈述句的语序,同时根据本句中的时态可知应该为一般将来时态,故为C