he must stay in bed 请问 in后面加the 有什么区别吗?

he must stay in bed 请问 in后面加the 有什么区别吗? he must stay in bed. must stay in bed so he must stay in bed for a week.句中stay为什么不加s stay in bed 和stay in the bed的区别 in bed 是同样的道理吗?但是He must stay in bed.怎么翻译呢? He is ______(terrible) ill.He must stay in bed. in the bed 与 in bed 的区别 in the bed 与 in bed 的区别!要详细说明加the有什么 you must stay in bed stay in bed 和stay in the bed 有什么不同? 请问英语介词he must stay in bed for a week How____________________?He must stay in bed for five days.