英语单音节词的短语，例如be good at，I am good at swimming very much我非常擅长游泳。另外好多短语都是单音节词形式的，in fact，Book looks very good but in fact he is only fourty years old.抱抱，看起来很老，但事实上，他才40岁，类似的单音节段有很有be good for，As old as等等
