He has learnt piano for two years错了吗?

He has learnt piano for two years错了吗? He has learnt piano for two years改错 He has learnt English for six years改同义句 He has learnt English for six years(改同义句 He has learnt English for six years.能不能study代替learn?毕竟study表 He has learnt Chinese painting for about ten years.(保持句意基本不变 He has learnt Enplish for six years.(改成同义句） he has gone for two years .改错题 改错:He has been to Beijing for over two years He has lived in the city for two years ___________ tom has become a PLA man for about two years,hasn’t he错在哪 he went to America two years ago错了吗