请问"in the bed"和 "on the bed "有什么区别,还有其它类似的词组吗?

请问"in the bed"和 "on the bed "有什么区别,还有其它类似的词组吗? in bed 和on the bed有什么区别? on bed ,on the bed,in bed ,in the bed有什么区别 in bed /on bed /in the bed /on the bed之间有什么区别?快 in bed和in the bed有什么区别? 短语ni bed 和 in the bed 有什么区别 on the bed on bed in the bed in bed 的区别 in hospital和in the hospital 还有in bed 和in the bed的区别 on the bed 与in the bed 的区别 in the bed和on the bed in bed ,in the bed 的区别 in the bed 和in bed 有什么区别吗?(so do in the hospital and in hosp