How could the sentence "I regret not learning to play the piano when I was younger" be transformed using "wish"?

The sentence "I regret not learning to play the piano when I was younger" expresses a feeling of remorse about a past action that did not happen. When transforming this thought using "wish," the structure typically involves reflecting a desire for a different outcome in the past.

The correct transformation is to use "I wish I had learned to play the piano when I was younger." This structure effectively conveys the sentiment that the speaker wishes they had taken the opportunity to learn piano skills during their younger years. The phrase "had learned" indicates a regret about a past possibility that was not realized, aligning perfectly with the original sentiment of regret.

In contrast, other options make grammatical errors or misrepresent the time frame or emotion the original statement conveys. For instance, using "have learned" incorrectly suggests a present perfect tense that does not apply to a past regret. "I wish I played the piano" implies a present desire without acknowledging the past regret. Lastly, "I wish I could learn the piano back then" implies an ongoing ability rather than a missed past opportunity, which misinterprets the essence of the original statement.