1) How long have you been studying English?
你学英文多久了?
2) How long have you been leaning English?
你学英语多久了？
3) How long have you be learning music ?
你学音乐多久了?
4) How long do you learn English?
你学习英语多久？
5) How long have you known her?
你认识她多久了？
6) And you've been In here how long?
你在这边多久了？
参考词条