作为动词，sleep用于说明睡眠行为本身、睡眠时间长短、睡眠质量、睡觉地点或睡觉方式。He thought someone had been in the house while he was sleeping. 他认为他睡觉时有人在房子里。
arm-arms手臂 ear-ears耳朵 eye-eyes眼睛 foot-feet脚 hand-hands leg-legs tooth-teeth牙齿 back-backs背 head-heads头 mouth-mouths嘴巴 neck-necks脖子 nose-noses鼻子 stomach-stomachs胃，腹部。
The little sheep _ now. 3. She always _ in the evening. 4. Sometimes I _ on the playground. 5. Talk quietly!
