Adverbs are modifiers of verbs. Adverbs do have correlation with the number and gender of the verb it modifies. הוּא רָצְ מַהֵר
| he runs fast
| היִא רָצְ מַהֵר
| she runs fast
| הֵם רָציִם מַהֵר | they (masculine) run rast
| הֵן רָציִם מַהֵר
| they (feminine) run rast |
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