Present perfect simple: whole-life experience (in the past but no time specified), just, yet, already, finished action (no time specified) with present results, action started in the past and is still happening now) (non-action verbs), how much/many have we done, superlatives, focus on results , Present perfect continuous: action started in the past and is still happening now) (action verbs), repeated actions (with "all day", "recently"), evidence: unfinished actions which have just been interrupted, how long have we been doing it, focus on activity (duration),

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