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Nivel A Gramática Lección 4: In/On/At

Jill February 15, 2021

IN – ON – AT

These common words are prepositions that show a relationship between two words in a sentence. These little two-letter prepositions seem to create confusion. Here are a few rules to help you understand when to use inon, and at in a sentence. For describing time and place, the prepositions inon, and at go from more general to much more specific.

Prepositions and Time:

  • IN: English speakers use in to refer to a general (less specific), longer period of time, such as months, years, decades, or centuries. For example, we say “in April,” “in 2015” or “in the 21st century.”
  • ON: We use on to talk about shorter, more specific periods of time such as days, dates, and holidays. You may hear, “I went to work on Monday,” or “Let’s have a picnic on Memorial Day.”
  • AT: For the most specific times, and for holidays without the word “day,” we use at. That means you will hear, “Meet me at midnight,” or “The flowers are in bloom at Easter time.”

Prepositions and Place

  • IN: When we refer to a place, we use in for the largest (most general) places. For example, “The Capitol is located in Washington, D.C.”
  • ON: For more specific places, like certain streets, we use the preposition on. You may know that the President lives on Pennsylvania Avenue in Washington, D.C.
  • AT: Use AT to reference specific places such as exact addresses or intersections, we use the preposition atFor example, “Come to my office at 400 Washington Avenue.” It’s at the corner of Independence Avenue and 3rd Street.”


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