1.I tell who he is.tell在此当作 识别; 辨别意思----一般不这样说,如果非要这样说,也习惯说i can tell...
2.Can I tell you who he is?符合语法,在特定上下文语境中也符合逻辑
3.Can you tell me who I am?同2
4.Can I tell you who I am?符合语法,很少在实际应用中这样说.
5.Can you tell me who you are?同3
6.I will know who he is.同3
7.I will tell you who he is.同3
8.I can tell you who he is.同3
9.I couldn't remember who he is.不合语法,is改为was
10.Can you remember which way to go?同3
11.Can't you remember which way to go?同3
12.I can't tell you who he is.同3
13.Can't you tell me who he is?同3
实际应用中,这几个句子都多用在口语,情况和中文一样.也就是说,如果中文口语很少说这样的句子,那英语也是.但就语法而言,基本都正确.