Present Perfect: past when you don't say the exact time, ever never, just yet already, with superlatives , with times, finished actions with present results, with non-action verbs, sth started in the past and still true now, emphasizes the completion of an action, Present Perfect Continuous: How long, for, since, with action verbs, sth started in the past and still true now., all (day/evening), emphasizes the duration of an action, Past Simple: past when you say exact time, when, last month, 5 minutes ago, sth started in the past and stopped in the past,

Grammar Upper-Intermediate 2A

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