how often 指每隔多久，主要用來對頻度副詞或狀語(如：once a week, three times a month 等)提問。

具體用法

01.主要用來問頻率的。比如：How often do you take exercises?你多久鍛煉一次？twice a week.我一周鍛煉兩次.I take exercises every day，我每天都鍛煉身體.

02.用來提問某動作或者狀態(tài)發(fā)生的頻率，指的是“一段時間內(nèi)發(fā)生了幾次活動”。How often do your parents let you to watch TV.你的父母多久讓你看一次電視？

03.注意和how soon,how long的區(qū)別，how soon主要是對“多快，多久”提問？How soon will you come back？how long是就 "一段時間"提問的，how long have you lived here?

04.注意和how far的區(qū)別，how far主要是就"距離"提問的，how far can you throw the ball?

相似短語

how often 多久；多常；多久一次

as often as not 經(jīng)常,時常,往往

as often as 每當(dāng),每次

often and often 經(jīng)常,常常,每每,屢次三番

and how 的確,當(dāng)然,無疑

How To adj.基本知識的

How to 操作方式

how to adj.基本知識的

how was it 怎么樣

as is often the case 這是常有的事