用how long 问是用for回答还是别的什么

Question

如题所述

Answer 1

How long是提问一段时间的。通常for加一段时间，但是how long 的回答可以很灵活。

比如： How long have you been in Shanghai?
—— For three months.(你在上海多久了？-已经三个月了）

Answer 2

用for或 since短语回答，如
How long have you stayed here?
For a year./ Since a year ago.

Answer 3

举个例子给你 how long have you been here?
for/about one year 都可以

Answer 4

for