初中语文第四册《听潮》一课中有这样一个句子:“海终于愤怒了。它咆哮着,猛烈地冲向岸边袭击过来,冲进了岩石的罅隙里,又拔刺着岩石的壁垒。”“拨刺”一词不易理解。可用“词类的活用”这条语法规则来解决。“拨刺”本义为象声词,形容鱼在水里跳跃的声音。在这个语言环境里,可引申为形容水击的声音,是象声词(形容词)活用为动词,意为“拔刺有声地撞击”,因为 There was such a sentence in the fourth volume of “Chinese Listening to Tide” in junior high school: “The sea finally became angry.” It roared, violently attacked the shore and burst into the crevasse of the rock. Barrier. “” Thorns “is not easy to understand. Available ”part of speech“ of this grammar rules to solve. ”Thorns“ the original meaning of onomatopoeia, describe the sound of fish jumping in the water. In this language environment, it can be extended to describe the sound of water hammer, which is the use of onomatopoeia (adjective) as a verb, meaning ”bursts of sound and impact" because