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English also has a present perfect continuous (or present perfect progressive) form, which combines present tense with both perfect aspect and continuous (progressive) aspect: "I have been eating". The action is not necessarily complete; and the same is true of certain uses of the basic present perfect when the verb expresses a state or a ...
The present auxiliary implies that they are in some way present (alive), even when the action denoted is completed (perfect) or partially completed (progressive perfect).) Aspects of the past tense: Past simple (not progressive, not perfect): "I ate" Past progressive (progressive, not perfect): "I was eating" Past perfect (not progressive ...
Thus the present perfect is have written or has written, and the past perfect (pluperfect) is had written. The perfect can combine with the progressive aspect (see above) to produce the present perfect progressive (continuous) have/has been writing and the past perfect progressive (continuous) had been writing.
For example, some grammars of Turkish count the -iyor form as a present tense; [1] some as a progressive tense; [2] and some as both a continuous (nonhabitual imperfective) and a progressive (continuous non-stative) aspect. [3]
Perfect progressive passives, as in the last example, therefore involve two consecutive participles of the auxiliary verb be; these constructions are rarely used. The implications of the present perfect (that something occurred prior to the present moment) are similar to those of the simple past.
The present progressive or present continuous form combines present tense with progressive aspect. It thus refers to an action or event conceived of as having limited duration, taking place at the present time. It consists of a form of the simple present of be together with the present participle of the main verb and the ending -ing.
A number of multi-word constructions exist to express the combinations of present tense with the basic form of the present tense is called the simple present; there are also constructions known as the present progressive (or present continuous) (e.g. am writing), the present perfect (e.g. have written), and the present perfect progressive (e.g ...
The terms perfective and perfect should not be confused. A perfect tense (abbreviated PERF or PRF) is a grammatical form used to describe a past event with present relevance, or a present state resulting from a past situation. For example, "I have put it on the table" implies both that I put the object on the table and that it is still there ...