| 31. | Modern Greek distinguishes the perfective and imperfective aspects by the use of two different verb stems.
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| 32. | Special imperfective verbs express aimless motions.
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| 33. | Nkn is also used as the prefix for first-person plural imperfective / present tense verbs.
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| 34. | Verbal roots were inherently imperfective ( durative, present ) or perfective ( punctual, aoristic ).
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| 35. | Combined with the non-past forms, this expresses an imperfective future and a perfective future.
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| 36. | The past contrasts perfective and imperfective aspect, and some verbs retain such a contrast in the present.
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| 37. | The imperfective aspect may be fused with the past tense, for a form traditionally called the imperfect.
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| 38. | These verbs were the perfective verbs, while the ones that did receive a present tense were imperfective.
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| 39. | The imperfective marker alters to some extent to match the sound of the verb it is attached to.
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| 40. | Contrast between a perfective and an imperfective verb may be also indicated by stress, e . g.
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