interrogative adverb

2)疑问副词(interrogative adverb)如：when何时，where何地，how如何，why为何。3)关系副词(relative adverb)如：where，w…

从属由疑问副词开端(Interrogative Adverb), 从属连接词

...nterrogative Pro－noun）或 “疑书副书”（Interrogative Adverb）。