2、m8.begoodat/dowellin9.beinterestedin10.befriendlyto11.talk/communicatewith12.introuble13.makefriendswith14.careabout15.havedifficulty(in)doingsth.【开头句】1. TodayIamgladtointroduce ateenager.HisnameisChengXin.2.I'mLiHuaand I'mveryhappytostandheretotalkaboutmyself.3. The