Have you ever...?

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 participle or
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.

Check Your UnderstandingCreate the sentences using ever, then answer the question (write only one possible answer.)

Example:

Susan/wear/cowboy hat
Has Susan ever worn a cowboy hat?
Yes, she has worn a cowboy hat.Yes, she has.

1. you/go/camping

         Answer         Have you ever gone camping?          

No, 
         Possible Answers         No, I haven't ever gone camping.         No, I've never gone camping.         No, I haven't.          

2. she/make/bread

         Answer         Has she ever made bread?          

Yes, 
         Possible Answers         Yes, she has made bread.         Yes, she has.          

3. Lisa and Tom/eat/Chinese food

         Answer         Have Lisa and Tom ever eaten Chinese food?          

Yes, 
         Possible Answers         Yes, they have eaten Chinese food.         Yes, they have.          

4. you/forget/Mike's birthday

         Answer         Have you ever forgotten Mike's birthday?         

No, 
         Possible Answers         No, I haven't ever forgotten Mike's birthday.         No, I've never forgotten Mike's birthday.         No, I haven't.