Present Perfect: an experience - do not say when it happened, clue words are never and ever, started in the past, continues now/in present, clue words since and for, finished in the past, has present consequences, finished recently in the past, clue word just, Present perfect continuous: long actions, repeated actions, temporary actions, Will (Future): promises, future predictions, offers/instant decisions, Be going to (future): plans which are 70% certain, Present continuous (future): plans which are 100% certain, Present simple (future): used for timetables/schedules, Modal verbs: are always finite (have tense), two of these cannot be used together, dummy modal (be able to) can be used with these, cannot be conjugated, followed by the bare infinitive ,

Grammar rules

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