对时间提问时,什么时候用How long?什么时候用How soon?

问题描述:

对时间提问时,什么时候用How long?什么时候用How soon?

how soon是指未来多久
如:I will get there in next week
对in next week提问用how soon
How long是指持续的时间长短
如:I was in hospital for two weeks
对for two weeks提问用how long