| 21. | There is a perfective / imperfective aspect distinction.
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| 22. | The only surviving PIE past imperfective was the past tense of " do ".
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| 23. | The same as root thematic imperfective verbs.
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| 24. | There is no imperfective aspect, as in Romance, no irregular verbs are available.
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| 25. | The tenses may be further divided according to the imperfective aspects respectively .-->
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| 26. | Perfective verbs, whether derived or basic, can be made imperfective with a suffix.
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| 27. | I had the hardest time figuring out the difference between perfective and imperfective in Polish.
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| 28. | All Lithuanian verbs can be characterized by their aspect which can be either perfective or imperfective.
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| 29. | Imperfective verbs are progressive or habitual.
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| 30. | Almost all of the single aspectual verbs are part of a perfective imperfective pair of verbs.
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