Fellow students， As we know，swimming is a nice sport and a good way to keep us fit．【高分句型】But remember some places are not so safe for us to swim in．（游泳有益健康；但有些地方不太安全）Don't go to rivers or lakes alone．It's better to go with our parents or friends．（不要独自到江河游泳；应有家人或朋友陪伴）Before swimming，get ready for it and don't get into the water in a hurry【高分句型】（游泳前做好准备工作，不要仓促下水）．While swimming，try to look after each other．We'd better not stay in water too long．（游泳时相互关照；时间不要太长）And don't swim too far．Enjoy it when you go for a swim．（我的建议不要游泳太远） Thanks．
