How can "I regret not going to the concert" be rewritten using "wish"?

The sentence "I regret not going to the concert" expresses a feeling of sadness or disappointment about a past action that didn't happen—specifically, the speaker did not attend the concert. To convey this sentiment using "wish," it's important to match the correct grammatical structure with the intended meaning regarding a past event.

The correct transformation, "I wish I had gone to the concert," accurately reflects the speaker’s regret about their decision in the past. The use of "had gone" indicates that this is a past wish, aligning perfectly with the original sentiment of regret. It expresses a desire that the action of attending the concert had occurred, highlighting the speaker's feelings about their missed opportunity.

Other options may not fully capture the nuance of the original sentence. For instance, while "I wish I had not missed the concert" also conveys regret, it lacks the direct correspondence to the action of going to the concert, instead focusing more generally on the occurrence of missing it. This subtlety is what makes the first choice the most fitting transformation of the original sentence.