贵州茅台镇商务定制酒:in bed和on bed有什么区别??

in bed和on bed有什么区别?? on the bed, in the bed, in bed有何区别？ stay in bed 和stay in the bed 有什么不同? stay in bed 和stay in the bed 有不同吗? 在床上玩耍是play on the bed还是play in the bed? 是 in the bed 还是 on the bed?(需说明理由） Gladys sits up in bed and turns on a lidht. 谁能告诉我in the bed与in bed的区别 He _____down on the bed . out and in zhe bed