Ever means from the time you were born until now. Except for rare exceptions, it can only be used in questions and to answers with a no.It is used with have or had + a past participle. Example: Have you ever eaten a frog? Has she ever gone to Australia? When you answer the question, a yes answer will use have/has + past participle. Have you ever seen a whale? Answer: Yes, I have seen a whale. or Yes, I have. If you answer the question with a no, you will need to use haven't /hasn't + ever + past participleor have /has + never + past participle (both of these have the same meaning) Example: Have you ever seen a whale? Answer: No, I haven't ever seen a whale. or No, I've never seen a whale. or No, I haven't.