flame可做可数名词,也可做不可数名词。作火焰讲的时候应该是可数名词。例如:The heat from the flames was so intense that roads melted.火焰的热度如此高以至于路面融化了。The flames grew larger as the fire spread.火势蔓延,火焰越来越高。When the fire engine arrived the house was already in flames (= burning).消防车赶到时,房屋已是一片火海。