interrogative word

基本解释

"Nada" mean nothing and anything. The word can be used in affirmative, negative and interrogative sentences.
指什么也没有，可用于肯定句、否定句和疑问句。
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They are of similar word class and grammatical form. But their non-interrogative usages differ because of syntactic constraints.
而非疑问用法由于受到不同的句式制约，产生了不同的表达方式。
When interrogative pronoun and negative word appear simultaneously, the former is restrained by syntactic licensor including negative operator.
疑问代词和否定词共现时，前者要受到包括否定算子在内的句法允准语的约束。