31.although = though 虽然 <不能与but连用>　　

30.keep healthy = stay healthy = keep in good health　 保持健康　

29.different　 不同的-difference<名>

28.healthy　 健康的----unhealthy<反义>　

27.health---healthy<形>

26.want=would like 想要

25.want sb. to do sth.想要某人做某事

24.want to do sth.想要做某事

23.be different from…和…不同

22.the same as…和…相同