The following is an interesting combination of the present perfect in the first clause and the present simple in the second. They suppos edly refer to the same experience. Is this mismatch okay? If so, are there any logical explanations?
Have you ever been so close to achieving your goal, but things suddenly all go wrong?
Hi, Ray—Like f6pafd, I am OK with the combination of tense and aspect in that sentence, and, like "gotube," I would find the sentence very natural with the simple past in the clause introduced by "but":
(1a) Have you ever been so close to achieving your goal, but things suddenly all go wrong?
(1b) Have you ever been so close to achieving your goal, but things suddenly all went wrong?
I think the possibility of the present tense in the second clause has to do with the fact that the situations are repeatable. People are frequently close to achieving goals; and while things do not always go wrong, things do have a tendency sometimes so to go.
I offer the following pairs of examples as proof of the principle I am inducing here, that the compatibility of the present perfect and the present simple in the successive, situationally related clauses stems from the repeatability of the situations in each clause. Take that away and you really do have a mismatch:
(2a) Have you ever eaten lunch, but your meal is interrupted by a phone call?
(2b) Have you ever eaten lunch, but your meal was interrupted by a phone call?
(3a) *I have eaten lunch, but my meal is interrupted by a phone call.
(3b) I have eaten lunch, but my meal was interrupted by a phone call.