When do you say them? Can you explain the difference?
I could never get used to it. and I have never gotten used to it.Or, are these the same?
I could never get used to it. and I can never get used to it.

Question

When do you say them? Can you explain the difference?
I could never get used to it.  and  I have never gotten used to it.Or, are these the same?
I could never get used to it. and  I can never get used to it.

Answer

These two sentences have essentially the same meaning. Some examples would be 'I live in America but I have never gotten used to driving on the right hand side of the road' or 'I live in America but I could never get used to driving on the right hand side of the road.' Both sentences have the same meaning.

Ne manquez pas cette occasion d'apprendre une langue depuis chez vous. Découvrez notre sélection de professeurs de langues expérimentés et inscrivez-vous dès maintenant à votre premier cours !