1．青少年烟民在增加；
2．青少年吸烟的原因。
[写作导航]第一段围绕提纲，指出青少年烟民增加已引起人们普遍关注，探究原因主要有三，自然转入第二段；第二段罗列原因，诸如：香烟到处可买得到、年轻人都有零用钱、他们想显示自己已成人、吸烟成为缓解压力的途径、吸烟是同伴影响的结果等。
[范文]
It i reported that the number of teenage moker ha been on the rie in recent year， which ha caued great concern among people in ail walk or life。 There are everal reaon that account for thi fact， but the following three may be the main one。
Firt of all， it i eay for teenager to get cigarette。 Cigarette are available almot everywhere。 Today＇ teen have more pare money， which come from the improved living tandard of their parent。 They can buy what they want， includingcigarette。 Second， teenager moke becaue their adolecent year are filled with pychological problem。 One of thee problem， for example， i etablihing a ene of identity。 The teen year are the time when young people want to be more independent from their parent and form their ownvalue。 The enormou mental preure of thee year can make ome people turn to moking。 A final， and perhap mot important， reaon i peer preure to conform。 Teen often become very cloe to pecial friend， for one thing， and they will hare a friend＇ interet， even if one of thee i moking。 Teenager alo attend partie and other ocial gathering where it i all important to be one of the crowd， to be "cool。" Even the mot mature teenager might be tempted to moke than to rik being an outcat。 For all thee reaon， cigarette are a major problem facing teenagerWWw.hAOZUowEN.com