Granted, he is a beginner, but he should know the basic rules.

的确，他是个初学者，但基本规则他应该懂啊。

《牛津词典》

He should know for he is such a monster himself.

他应该知道，因为他自己就是这样一头怪兽。

youdao

He should know that because he design garden too.

他应当知道，因为他也设计花园。

youdao

"We've heard the words he spoke on behalf of the world's number one democracy, he said - we've been waiting for these words for a long and he should know that the has friends and that Europe will from now on be an even stronger pillar that he can count on,".

VOA: standard.2009.04.04

He should have said that you know what, harmony is not really invisible or can't be destroyed.

他应该说，知道么，和声并不是真的无形,并不是不可毁灭。

耶鲁公开课 - 死亡课程节选

And you should know about Mike that he is a special person.

大家迈克此人比较特别。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

He should know--he was a 20-year veteran at Lego who was laid off in 1997.

FORBES: Copenhagen Capitalism

He should know: Myerson has a few 60 and 70-pound stripers also on his resume.

FORBES: A Fishing Tournament In Gotham City

He should know that the world was not all lessons and iguanas and Nintendo.

NEWYORKER: Puppy