... TOPIC 2: OUR PASTPERIOD 8: PRESENT SIMPLE, PAST SIMPLE AND PREPOSITIONS OF TIMEA. Theory:1. Present simple and past simple:Tenses Affirmation Negation InterrogationPresent ... are notS + don’t/ doesn’t + V1Am/ Is/ Are = S + ?Do/ Does + S + V1? Everyday, usually, often, never, usually, hardl In the morning/ afternoon/ evenin g- On Mondays/ at weekends In spring/ ... Yesterday: / In 1979 < now, First, later, then, after that, finally, at last 2. Prepositions of time: - IN + month/ year/ seasons/ …- ON + days/ the weekend/ …- AT + time/ weekends/ present/...