Present Simple: permanent situations/states, permanent truth or laws of nature, timetables, Present Continuous: fixed arrangement in near future, actions taking place at the moment of speaking; temporary situations, changing or developing situations, expressing anger, irritation or criticism, Present Perfect: a past action whose result is visible in the present, recently completed actions., to say "how many times", Present Perfect Continuous: actions started in the past and continuing up to the present, to say "how long",

Present Tenses

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