lie on a bed ,lie in the bed ,lie in bed區別在於具體含義不同，引申的意思也不同。
lie on a bed意思是：躺在一張床上。或引申為不做事情，苟活。
Everyone in the company is supposed to work hard, not to lie on a bed of roses.
公司裡的每個人都應努力工作，不得苟且偷安。
lie in the bed意思是：躺在床上，休息或睡覺。
He would lie in the bed and finally, with daylight, he would go to sleep. 他要去躺在床上，最後，天亮了，他就要睡覺了。
lie in bed 意思是：臥床，多指生病在床。與上面兩者有明顯的不同。
lie stay in bed 臥病在床；lie awake in bed睡不著
His roommate‘s bed was tightly close to the window, while he could only lie in bed all day long.
病友的床緊靠著窗，而他只能終日平躺在床上。
lie on a bed ,lie in the bed ,lie in bed區別在於具體含義不同，引申的意思也不同。
lie on a bed意思是：躺在一張床上。或引申為不做事情，苟活。
Everyone in the company is supposed to work hard, not to lie on a bed of roses.
公司裡的每個人都應努力工作，不得苟且偷安。
lie in the bed意思是：躺在床上，休息或睡覺。
He would lie in the bed and finally, with daylight, he would go to sleep. 他要去躺在床上，最後，天亮了，他就要睡覺了。
lie in bed 意思是：臥床，多指生病在床。與上面兩者有明顯的不同。
lie stay in bed 臥病在床；lie awake in bed睡不著
His roommate‘s bed was tightly close to the window, while he could only lie in bed all day long.
病友的床緊靠著窗，而他只能終日平躺在床上。