1.He is good at piaying football.（他擅长踢足球）

2.I am good at playing chess(我很擅长下象棋）

3.She is good at swimming(她擅长游泳）

4.He is good at English(他擅长英语）

5.We are good at tennis(我们都擅长网球）

6.Viruses tend to be good at surviving when a computer system crashes.（病毒往往在电脑系统瘫痪时仍然存在）

7.You need manual dexterity to be good at video games.（玩好电子游戏手要灵巧）

8.It feels bad to not be good at something.（如果不擅长某事会感觉很糟糕）

9.Be good at your job.（做好你的工作）

10.Learn to be good at thinking.（学会善于思考）。