she will stay with her parents three days a week对three days a week提问

问题描述:

she will stay with her parents three days a week对three days a week提问

How often does she stay with her parents a week?为什么用how often?,不是应该用how long吗How long 是问一段时间、How often 是问频率、Three days a week 是频率所以用How Often哦~明白了谢谢