正式表达法

You can be sure.确信无疑。

I don’t think I have any doubt about that.我对此没有任何疑问。

I must say his honesty is beyond doubt.我必须说他的诚实不容怀疑。

I am quite convince..我十分相信。

It’s definite he’ll win.他是必赢的。

There is no doubt about it.勿庸质疑。

Uncertainty Expressions 表达不肯定