1、在床上
... in bed在床上 on the bed 在床上 in the tree (多指树外之物) 在树上 ...
2、坐在床上
... stay in bed 呆在床上 on the bed 坐在床上 in the bed 躺(睡)在床上 ...
3、某物在床上
... Don't read in bed. 不要躺在床上看书。 on the bed 某物在床上 There is a book on the bed. 床上有本书。 ...
4、床上
... 当我六岁时，我就会拉小提琴了 » When I aged six, I will playing the violin 床上 » On the bed 是你的老公 » Is your husband ...