英语中“call at”“call for”“call on”“call up”常因同根“call”混淆,实则区别显著。“call at”接地点,表“短暂拜访某地”,如“call at the library”;“call for”语义灵活,可接抽象名词表“需要”(如“calls for communication skills”)、接人表“去接某人”(如“call for you at the bus stop”)、接动作表“呼吁”(如“called for immediate help”);“call...