可供你参考一下：
smoking is harmful,when you are in public place,you will see many smokers,and most of them young people ,and even middle shool studens,it is said that in china smokers cover about 45 persent,why do so many people enjoy smoking?some think that it is a pleasure ,some believe that it can refresh themsleves,In fact ,smoking is a bad habit ,it does great harm to our health,not only to the smoker himself ,but also the others ,for smokers ,it is a great waste of money ,and causes all kind of diseases ,besides ,many fires are caused by careless smokers
today ,more and more people are beginning to realize the harm of smoking and decide to give ti up ,if you are not a smoker ,dont start