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(改同义句 同义句He has been learning English for six years He has learnt Enplish for six years.(改成同义句） He has learnt English for six years.能不能study代替learn?毕竟study表 改句子 He has studied English for six years 强调句 一般疑问句 特殊疑问句 Can He has learned English for six years.改为同义句 I He has studied English for 6 years改为同义句 He has learnt Chinese painting for about ten years.(保持句意基本不变 把“He has studied English for 6 years.”改为同义句~ He has been in China for five years改同义句 He has learnt piano for two years错了吗?