睡觉在英语中可以说为"sleep"，这个词来源于古英语中的"slepan"，意思是"睡着"。

例句：

I need to sleep for at least 8 hours every night to feel well-rested. (我每晚需要至少睡8个小时才能感到身心舒畅。)

The baby is finally asleep after crying for hours. (这个婴儿终于睡着了，之前哭了几个小时。)

I can't fall asleep because I'm worrying about the upcoming exam. (我睡不着，因为我在担心即将到来的考试。)