I go to school at eight in the morning
八点钟───eight o'clock;上午───morning
Eight o'clock had already chimed.───已敲过八点钟了。
By eight o'clock he had arrived at my hotel.───他八点前已到了我住的旅馆。
Wake up! It's eight o'clock.───醒醒吧！已经八点钟了。
It might have been eight o'clock in the evening. As he was not acquainted with the streets, he recommenced his walk at random.───当时应已是晚上八点钟了，因为他不认识街道，他只得信步走去。
Harry and Hermione were all for it, so at eight o'clock that evening they hurried back to the Great Hall.───哈利和赫敏都赞成去，于是，晚上八点，他们又匆匆回到礼堂。
They got ready to leave by eight o'clock.───他们为八点钟动身作好准备。
I've been on the go ever since eight o'clock this morning.
Eight o'clock had already chimed.
Wake up! It's eight o'clock.
His bedtime is eight o'clock.
David lost consciousness at eight o'clock and died a few hours later.