Both.I'm trying to figure out what the question really is @sitifan. Is it about 'ever' or about 'at all'?
1. Do you play tennis? (?Do you see a cuckoo bird?)Let's break it down. I'm sure you have a basic idea of what the word 'ever' does, right, @sitifan? Tell us what you think the differences between 1 and 2 are.
1. Do you play tennis? (?Do you see a cuckoo bird?)
2. Do you ever play tennis? (?Do you ever see a cuckoo bird?)
There is simply no reason for "ever" in normal conversation.
There isn't normally a reason for it. There might be one, but nobody has thought of one yet. That is, nobody but me. ("Do you ever have any original thoughts.")
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