Smile is an attitude to life.To begin with,everyday we need to smile to ourselvers,it is useful to adjust our mood and make us happy so as to forget more pressure from study and work.Second,we shall learn how to smile to others as well,not only does make ohers joyful ,but also it can bring you more compliments.It will leave a great impression on others.Smile is akind of language which helps us to communicate with others better .So smile can change many things that even you can't imagine.Smile is an attitude to life,as the saying goes,if you smile to life,life will smile to you in return.