Some of the things I said--you'd probably say, well I should have known that an insurance company would have to do that, but it isn't.

对于我说的一些东西，你可能会说，我早就知道,保险公司会如此操作，但事实并非如此。

耶鲁公开课 - 金融市场课程节选

You should have known better.

你早该知道的。

I should have 实战 - SpeakingMax英语口语达人

He was want to say that if he had read as much as other men, " he should have known no more than other men."

他曾经说,如果他和别人读的书一样多，他就应该知道得和别人一样多“

耶鲁公开课 - 政治哲学导论课程节选

I should have known better.

我早该知道的。

I should have 课堂 - SpeakingMax英语口语达人

I should have known that but I didn't.

我怎么没想到呢

耶鲁公开课 - 聆听音乐课程节选