53.去年 last year
52. 在过去 in the past
51.能做某事be able to do sth (have the ability to do sth)
50.对某人表示感激 be grateful to sb
49.过街 cross the street
48.跌倒 fall down
47.玩水上运动 play water sports
46.擅长游泳 be good at swimming
45. 帮助其他成员 help other members
44.为了某人的帮助感激某人 be grateful for one’s help