You are the best mom ever!

你是世界上最好的妈妈！

I love my mom for being the best mom ever!

我爱我妈妈，她是史上最赞的老妈！

Happy birthday to the best mom a son ever had.

祝儿子心目中最好的妈妈生日快乐。

You are the best mom that a son ever had.

您是儿子心目中最好的妈妈。

You are the best mom that a daughter ever had.

您是女儿心中最好的妈妈。

You are the best mom that a daughter ever had.

您是女儿心里最佳的母亲。

Mom: This is the best card I 'v ever received.

妈妈：这是我收到过的最好的卡片。