疑問詞ぎもんし＋も＋〜ない

何も / 誰も / どこも + Verb (negative)Question word + も + Verb (negative)

Meanings

complete negation with question words: nothing, nobody, nowhere, none

About this pattern

Explanation

A question word followed by も and a negative predicate expresses total negation: 何も食べませんでした = I ate nothing; 教室に誰もいません = there is nobody in the classroom; どこも行きませんでした = I went nowhere.