foam 过去式:foamed 过去分词:foamed 现在进行时:foaming 词形变化: 动词过去式: foamed | 动词过去分词: foamed | 动词现在分词: foaming | 动词第三人称单数: foams | 词义辨析: 同义: n.泡; 泡沫 bubble lather froth