"我不会忘记你的好。"用英语怎么说?

I will never forget your goodness/kindness/fineness.

I will keep your goodness in my mind forever. 我将永远记得你的好.
---keep in mind 铭记于心的意思

I will never forget how smart you are

最佳答案：I won't forget your kindness.

同意楼上

I won't forget you.

I won't forget your kindness.
楼上的翻译的就很好啊,呵呵