👧How long have you lived here?你在这里住了多久了？
👦I have lived here for five years.我在这里住了5年了。
👧How long has she worked here?她在这里工作多久了？
👦She has worked here since 2010.她从2010年起就在这里工作了。
👧How long have they known each other?他们认识多久了？
👦They have known each other for a long time.他们认识很久了。
👧Has he studied English for a long time?他学英语很久了吗？
👦No, he has studied English since last year.不是，他从去年才开始学英语。