Question

I tell you something about eight oclock now对吗？

Answer 1

你好

I tell you something about
eight o'clock now.
这句话不对, 有语法错误。如果你想表达, 我一会儿会在八点(左右)的时候告诉你一些事, 应该用一般将来时, 句子可以这样说
I'll tell you something around
eight o'clock. See you then.
I'll等于 I will, will do sth表示将会做某事, tell sb sth 短语,表示告诉某人某事.
o'clock表示时间的点, 前面用数词, 表示几点, 比如 eight o'clock. 希采纳

Answer 2

应该改为： I will tell you something at eight o’clock.
或者： I tell you something now.
原句中时间eight o’clock 与now 自相矛盾，只能取其一。