The old man often stays at home______.A all days B all the days C alll day D all the day最好说一下为什么
问题描述：
The old man often stays at home______.
A all days B all the days C alll day D all the day
最好说一下为什么
答
选b
答
21.The old man often stays at home ____.
A. all days B. all the days C. all day D. all the day
答：C
all day 整天 词典上有例句：He worked all day.
BD有定冠词，是特指的某一天或某几天，用于过去时如：
all the day yesterday 昨天一整天。
all the days he spent on the island 他在岛上所度过的所有的日子
想不出all days的用法。
答
选择b,因为 all the days= every day