sleep的形容词形式是sleepy ;
sleep
v.睡;睡觉;入睡;可供…睡觉;可供…住宿;
n.睡觉;睡眠;睡眠时间;一觉;眼屎;
第三人称单数: sleeps;
现在分词: sleeping;
过去式: slept;
过去分词: slept
I sleep with the window open unless it's really cold.
天气若不很冷,我总开着窗户睡觉。
He works at night and sleeps during the day.
他晚上干活,白天睡觉。
How long can a human being go without sleep?
人不睡觉能活多久?