3.an interrogative adverb; an interrogative particle.
疑问副词,疑问助词
4.an interrogative adverb
疑问副词
5.a hard, interrogative stare.
严厉且充满疑问。
6.an interrogative raising of the eyebrows.
质疑地抬起眉毛
7.This paper discusses the possibility of semantic combinations between every two types of mood patterns: declarative, imperative, interrogative and exclamative.