When interrogative pronoun and 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.
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The interrogative pronoun is placed at the syntactical position which the question is asked about, e . g.
句中疑问焦点在哪个句法位置上,就把疑问代词放在哪个句法位置上.
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