请问sleeping与sleep做名词睡眠时的区别..谢谢

sleep n. 睡眠 如： He didn't get much sleep .

sleeping n. 睡眠 有时构成复合词 如：sleeping bag n. 睡袋

sleep和 sleeping都有睡眠的意思,但大部分时候似乎都是用sleep.
缺乏睡眠是lack of sleep
但“睡眠问题”又是两个可以混用,sleep problems,sleep disorders用的比较多,但sleeping problems也并非不常见
区别：sleep既可以做名词,也可做动词,通常指入睡的状态
例句：Do you ever talk in your sleep?你睡觉说梦话吗?
Hibernation is a long and very deep sleep.冬眠是一种深沉的酣睡.
The boy is sleeping like a log.那男孩睡得很熟.
He was so tired that he slept late into the next morning.他很累一直睡到第二天上午.