英语中什么是特殊疑问句?

以what how why which 等开头的句子，需要以陈述句回答，例如
What`s your name?
How do you know?

用when what how why which whore who who's whoes等特殊疑问词开头的句子叫特殊疑问句，并且回答时不能只用YES NO。
如What's time now? It's half past eight a.m.
Who's David? The red one.

WHAT WHEN WHERE HOW WHICH WHO开头的就是特殊疑问句。

补充一下，回答不能简单用Yes或者no来回答的句子，呵呵

以特殊疑问词开头的疑问句