Did he sleep okay?是什么意思？

Did he sleep okay?

他睡得好吗?

did

v. 做( do的过去式)，干，学习，研究；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

sleep

vi.& link-v. 睡，睡觉；vi. 睡，睡觉，睡眠状态；vt. 为…提供床位，提供住宿，以睡觉打发日子；n. 睡眠；

例句
Their sleep is regularly disturbed by the sound of gunfire as criminal gangs settle their nightly accounts.
他们经常被黑帮每晚火拼的枪声所吵醒。

okay

n. 认可，同意；v. 赞成或同意，批准；int. 行，用以表达准许或同意之意；adj. 可以，不错；

例句
Is it okay if I come by myself?...
我一个人来行吗？