Do you mean an imperative? That would be simply "Run!" or दौड़ो! In English we might say "You! Run!" or "You, run!" but mostly we would just order "Run!" Hindi imperative verbs end with an "o" sound. The sentence is the lesson is something more like "you run (while she walks).' Unless it is an emergency "Run!" or दौड़ो would be rude in English or in Hindi.