He knew he'd never forget.

Meaning: This sentence describes the person being certain that they would never forget the experience.

Choice of Words: The word "knew" means to be certain or sure about something. "Never" means not ever or at any time. "Forget" means to stop remembering something. When you put them together, "knew he'd never forget" means that the person was certain that they would never stop remembering the experience.

Alternative Expressions

Related Expressions