- 你想在这儿待多久就待多久。
You may stay here as long as you like.
- 你想要待多久就待多久。
You can stay as long as you like.
- 雨会下多久？
How long will this rain go on?
- 你待了多久?
How long did you stay?
- 你离开家有多久了?
How long have you been alienated from your family?
- 你认识她多久了？
How long have you known her for?
- 它将停在那里多久？
How long will it stop there?
- 这种症状在我身上将会持续多久？
How long will I have this?
- 你在这里住多久了？
How long have you lived here?
- 您多久见他一次？
How often do you see him?
