enough可以是副词,限定词,或代词限定词 determiner:Have you made enough copies? Is there enough room for me?副词 adverb:This house isn't big enough for us. She's old enough to decide for herself.代词 pronoun:Six bottles should be enough. Have you had enough (= to eat)?你举的两个例子fool enough& big enough 都是副词。英式英语中enough没有所谓的“形容词”此行,determiner的用法类似于形容词词性,因为作为determiner时,enough多放在复数或不可数名词前,表示as many or as much as somebody needs or wants