With the development of society,more and more people live a rich life.They can not only have all kinds of outdoor activities,but also can afford to travel.Now even more and more can buy a private car.There are some advantages about it.First it can avoid being crowded on the bus.Second,it can reduce the pressure of going to work far away from home.Third,it is very convenient for those who like traveling.They can go where they want.But there are also some disadvantages.First,if there are more and more private cars,the traffic will be busier and busier.Second,the pollution will be more and more serious.Third,if there are more private cars,those who are not rich will be forced to buy one when they find many people have private cars.So in my opinion,if possible,we can take a bus to work.Then it can reduce pollution and the traffic won’t be so busy.