Eight就是完全形式。

num. 八八个第八八岁八点

adj. 八的

n. 八人划船队The cut needed eight stitches.

这道伤口需要缝八针。

I have to clock in by eight.

我必须八点前打卡上班。

Wake up! It's eight o'clock.

醒醒吧！已经八点钟了。

Eight o'clock had already chimed.

已敲过八点钟了。

Twenty-eight is divisible by seven.

二十八可以被七整除。