2.shop→shopping 购物 trip→tripping 绊 stop→stopping 停止 drop→dropping 放弃 3.travel→travel(l)ing 旅游 swim→swimming 游泳 run→running 跑步 dig→digging 挖、掘 begin→beginning 开始 prefer→preferring 宁愿 plan→planning 计划 全国新东方...