请问sleeping与sleep做名词睡眠时的区别..谢谢

请问sleeping与sleep做名词睡眠时的区别..谢谢 关于work without sleep和、对吗?关于work without sleep和work without sleeping两句话都对对吗?一个做名词一个作动词对吗还有啊, 一个英语问题：Are you sleep还是Are you sleeping请问应该是Are you sleep还是Are you sleeping sleep ,asleep,sleeping的区别 during sleeping还是during sleep He must be sleeping.与He must sleep.有什么区别 before sleep与before sleeping哪个是对的?因为sleep有双词性,我搞不懂,如果是名词性的还要加ing吗．?具体的题目是,brush teeth before...用sleep 还是sleeping? sleep,sleepy,asleep,sleeping,fall asleep区别 sleep/asleep/sleeping/sleepy举例区别 asleep ,sleeping,sleepy,sleep的区别 sleep sleeply asleep sleeping 的区别 fall sleep还是fall sleeping all sleepy I find it not easy to sleep well.中it not easy to sleep well.做什么成分?可以写sleeping吗?句型是? ( )late in the afternoon bob turn off the alarm A.To sleep B.sleeping( )late in the afternoon bob turn off the alarm A.To sleep B.sleeping 请问选哪个 各为什么 各在什么地方用 I am not feeling___today,Maybe I need moreAwell,sleeping Bgood,sleeping Cwell,sleep Dgood,sleep 请问 a sleeping dog “睡眠习惯”能翻译为sleep habit吗,sleep也有名词睡眠的意思,但是能做定语吗? 用英语说你睡得好吗为什么说are you sleeping well,不说did you sleep well