daresay

1. I daresay anything he had to say in the lecture would have been old stuff to you.
   我敢说，他在演讲里所谈的对你来说必定是老套。

dare.say

v.intr.tr.（不及物动词和及物动词）
To think very likely or almost certain; suppose. Used in the first person singular present tense:
料想：认为很可能或几乎肯定；猜想。用于现在时第一人称单数：
例句：
Will they be lateô Yes, I daresay. I daresay you`re wrong.
他们将会晚吗ô是的，我认为很可能。我猜想你错了