7.and that's a fact<非正式>(用以强调所说内容的真实性或正确性)事实就是如此, 本来就是这样, 说得一点不错
We aren't playing well as a team, and that's a fact.我们作为一个球队整体打得并不好, 事实就是如此。
He is a dull writer and that's a fact.他写的东西很没意思, 真的。
8.as a matter of fact
(actually)确切地说；事实上；恰恰相反
It's not that difficult. As a matter of fact, it's quite easy.这并不那么难, 实际上, 容易得很。
I guess you haven't eaten yet.—As a matter of fact, I have.我想你还没吃吧？——正好相反, 我已经吃了。