interrogative/ˌɪn.t̬əˈrɑː.ɡə.t̬ɪv/形容词疑问的an interrogative adverb疑问副词/ˌɪn.t̬əˈrɑː.ɡə.t̬ɪv/名词疑问词；疑问句"Who" and "why" are interrogatives.who 和 why 是疑问词。想跟读，去练习
