I AM GOOD AT STUDYING ANG WORKING. 口语i have ability of learning and working 基本正确i have capabilities of learning and working在意义上：ability表示人在各方面能力或才能。capability 表示做事（尤其做交重要的事）的能力或才能，他的复数形式常会有“潜力”或“发展前途”的意思。
