Ever is a bit of a tricky word to use alone, it becomes a prefix and suffix a lot of times. I'll give some examples in a moment. You should think of never as "Not ever" Have you ever tried ice cream? - Have you had ice cream before? (unbiased question, you're curious if they have tried it) Have you never had ice cream? - Have you not had ice cream before? (It adds more shock and disbelief, you can't believe they wouldn't have tried it) Examples for a prefix "The seasons are ever-changing" - the seasons are always changing you can change it from an adverb to an adjective with "every" "He is late every time" - he is late each time (like saying always time or all times but these would be incorrect to use) Or the opposite "He is never late." - he is always on time Example of a suffix "This is taking forever." - Which is like saying it feels as if it will go on "For always" (for always is incorrect it's just the meaning of forever) or if you were being negative you could also say; "This is never going to end." When is it going to end? Not ever - never. I hope that helps a bit!

never means "not ever" ever has meanings of "at any time" or "always" so "can you ever be on time ?" - this sentence would be expressing exasperation or mild disappointment. He is never on time -- he is always later

ever曾经 never从不