Questions about the grammaticality of these sentences

[NPIs]

Hello, I just wonder if the following four sentences are grammatically correct or not. Please pay attention to the negative polarity item "ever".

1) The farmer has ever planted trees.
2) The farmer who has ever planted trees smokes.

3) The farmers have ever planted trees.
4) The farmers who have ever planted trees smoke.

Thanks in advance.

[Mister Micawber]

None are correct. Ever conveys no negativity. In standard prose usage, ever is used in negative, interrogative or hypothetical utterances:

The farmer has not ever planted trees.
Has the farmer ever planted trees?
If the farmer has ever planted trees, he knows they take a long time to grow.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Guest]

Thank you very much.

Have a nice day.