You should have told me so before.

你早该告诉我的。

《牛津词典》

You should have seen it!

你应该看见的！

《牛津词典》

You should have heard him last night!

你真该听到他昨晚说的话！

《柯林斯英汉双解大词典》

But you should have seen me.

VOA: special.2009.05.16

You are allowed to use on the test the official version of the Periodic Table of the Elements which most of you should have by now.

在测试中你们可以使用,化学元素周期表的官方版本,你们应该大部分都有了吧。

麻省理工公开课 - 固态化学导论课程节选

When you express regret for something that you should have, should not have done.

当你想表达某种悔意，对某事你本该做，或本不该做，

I should have 课堂 - SpeakingMax英语口语达人

As a business owner, you should have a vested interest in the ongoing discussion.

FORBES: Tax Reform: Ugly But Not Cynical

After all, when speaking to the NEWS media, you should have something new to say.

FORBES: Make It Engaging! -Media Training

Ideally, you should have saved enough to fund your spending for an entire year.

FORBES: How Much Should I Have Saved Toward Retirement?