Aspect

1. Introduction
2. Continuative and durative
3. Habitual
4. Iterative
5. Perfective
6. Perfect

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In some cases, the continuative aspect can be taken for a durative aspect, which is the aspect especially emphasizing the duration of the action or state expressed by the verb. The durative aspect is typically marked in a non-manual way, such as, for example, the mouth gesture "AAAA" or "L-L-L-L":

    "It's been raining all morning."
    "I've been seeing that poster all morning and now it's not there all of a sudden."