When talking about time, specifying dates, days, or longer periods of time, we need a part of speech called the preposition. Prepositions are connecting words which introduce one thing’s relationship with another. In this case, we will be talking mostly about the speaker’s relationship with a certain period of, or point in, time.We use three prepositions to talk about time. They are in, at, and on. We use each one to talk about different demarcations of time. Memorizing the rules of how to use each one will make conversation much easier:InWe use in to talk about:MonthsIn four months, I will be on tour in Iraq.YearsI haven’t been home in about 3 years.CenturiesThe Normans invaded Ireland in the 12th century.SeasonsIn the winter, we will head south to Florida to stay warm.AtWe use at to talk about:Precise timeAt 3 o’clock we will go to the school to get ready for the show.OnWe use on to talk about:DaysOn Thursday, we will go to the gym to lift weights.DatesOn the 20th of January we will