Could you tell us how long we're going to be away? 为什么用how long 而不用how soon?

来源：百度知道编辑：UC知道时间：2024/05/12 09:56:34

how long 问多久，how soon问多快，不一样的
比如说你三天后要去国外十日游
同行朋友问你could you tell us how long we're going to be away?你回答For 10 days.
如果问could you tell us how soon we're going to take off?你回答In 3 days.

how soon是对将来的时间提问，而这里是一个持续的状态，已经发生，不能用HOW SOON～

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