1How often
間隔多久
How often does she come here?
她多久來一次 ?
Twice a month.
一個(gè)月來兩次
2How soon
指再過多久,主要用來對(duì)表示將來的一段時(shí)間
How soon will she be back?
她要多久才回來?
In an hour.
1小時(shí)后
3How long
表示長度
How long is the river?
這條河有多長?
About 300 km.
大約300公里
表示一段時(shí)間
How long have you been here?
你來這邊多久了?
About two weeks.
大約兩個(gè)星期