(1)肯定陈述句：Somebody remember something forever.

(2)否定陈述句：Somebody never forget something.

(3)隐否定陈述句：Something be unforgettable.

(4)改述陈述句：Something give somebody deep impression.Better choice:某事深深植根于某人的记忆当中。

Something be deeply rooted in one’s memory/mind.

主语 系语 状语 表语 主语补足语

例如：童年时代，我有过一次永生难忘的痛苦经历。The horrible experience in my childhood is deeply rooted in my memory.万能“亮点”句：

我敢说这段美好的经历我永生难忘。

I am sure that this great experience+非谓语动词作后置定语+ will be deeply rooted in my/your memory.