对频度副词提问，英语通常用how often。How often的本意是“多经常”，通常译为“多久”“隔多久”。如： How often do you wash your hair? 你多长时间洗一次头发? http://yingyu.chazidian.com How often do you go to church? 你隔多久去做一次礼拜? How often do you have a bad back? 你多长时间腰痛一次? How often do the buses run? 公共汽车隔多长时间一班? How often do you hear from your sister? 你多长时间接到你姐姐一次信?