Ever means 'at any time'. Never means 'at no time' or 'not at any time'. We often use 'ever' and 'never' with the present perfect, but they can also be used with other verb tenses.
- I've never been to Brazil.
- They had never seen such a beautiful sunset before.
- Does she ever visit her mother?
- I never saw such a big fish before.
- Have you ever studied German?
- Has Lucy ever been to the theatre?
- Do you ever come to London?
- Doesn't he ever call his grandmother?
- I haven't ever been here before = I have never been here before.
- He doesn't ever take any exercise = he never takes any exercise.
- Nobody has ever bought my paintings before.
- Nothing ever turns out right!
- We hardly ever go to the cinema.
- She barely ever replies to my emails.
- It was the first time that she'd ever been abroad.
- That is the best meal that we've ever had.
- It's the only thing that I've ever wanted.
- She was working harder than ever.
- My life is better than ever!
- If you ever want a job, let me know.
- If she ever comes to London, she can stay with me.
- I'll never ever come here again!
We use 'as ... as ever' to say that something is the same as always.
- He's as kind as ever (= he's still very kind / he's as kind as always).
- The city is as exciting as ever (= the city is still very exciting / the city is as exciting as always).
- I've loved London ever since I was a child.
- She's wanted to have children ever since she met her husband.
- I will love you for ever and ever.
- The trees are evergreen.
- The prince and princess lived happily ever after.