This document discusses time expressions used with different frequencies such as once, twice, three times as well as days of the week, dates, times of day, seasons, and the present simple and present continuous tenses. Common time phrases are provided like at three o'clock, at midnight, at the weekend, at night, now, right now, at the moment, in the morning, in the afternoon, in the evening, every day, every week, every Saturday, once a day, twice a week, three times a month.