Breakdown of Он совсем не понимает.
не
not
он
he / it (for a masculine noun) / it (for a neuter noun)
понимать
to understand
совсем
completely, quite
Questions & Answers about Он совсем не понимает.
How does совсем change meaning when used with не?
By itself, совсем usually means "completely" or "entirely." However, when you pair it with the negative word не, the phrase совсем не becomes a set expression that means "not at all."
Could I put совсем at the end of the sentence instead?
Yes, Russian word order is flexible, so you could say Он не понимает совсем. However, keeping the phrase совсем не together right before the verb is the most common and natural way to emphasize the "not at all" meaning.
Why use the imperfective verb понимает here?
We use the imperfective form because his lack of understanding is an ongoing state, not a single completed event. The perfective pair is понять, which focuses on the specific completed result of grasping a concept (like an "aha!" moment) and would typically be used for past or future completed actions.
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