I'll never forget somethingREMEMBERused to say that you will always remember something from the past, because it was sad, funny, enjoyable etc 我永远也忘不了某事 I’ll never forget the look on his face when he opened the door. 我永远也忘不了他开门时脸上的表情。
→ I’ll never forget something at forget(SPOKEN SECT)