1. apply to the events that occurred in the past and continuing until the present, and to have the term Since (since), and for (a) used in conjunction with the up to date.2. apply to the event that has ever been done in the past (only a few times or other current or future in it) and what ever (ever), never (never) used in conjunction with.3. use the event ended but she still impressed (if not Tense.4. apply to the recently ended, shortly (not impressed), which will be shared with these words is Just (barely), already (already), yet (yet), finally (finally), etc.
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