1. If you don't take a taxi, you will miss your train
2. I regret I didn't listen to my father's advice
Can I rewrite:
1. You'd better take a taxi if you don't want to miss your train
2. I regret not listening to my father's advice
so can I rewrite the sentence 2:
I regret not to listen to my father's advice
No, you could say 'I regret not having listened...' as an alternative.
so what is the difference between regret not to listen and regret not listening and regret not having listening????
'regret not listening and regret not having listened'
Mean the same thing.
'regret not to listen'is ungrammatical.