Слова-помощники Present Simple: usually, seldom, often, rarely, regularly, always, today, sometimes, never, every week/day/year/month, at 7 o'clock, on Mondays, from time to time.
Слова-помощники Present Continuous: at the moment, now, today, tonight, tomorrow, this week, this year, just now, at the present, "Listen!", "Look!", still, nowadays.