In, On, or At? How To Understand and Use Prepositions in English

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The prepositions in, on, and at are some of the most confusing words in English. Even advanced learners mix them up because they donโ€™t always translate directly from other languages.

The good news? They arenโ€™t random. There are clear patterns you can follow.

When you organize prepositions by topic โ€” time, location, transportation, and media, the rules become easier to understand and remember.


Want the Complete Classroom Posters Set?

Save time planning and give your students clear visual support for in, on, at, to, and zero prepositions.

These printable anchor charts are organized by

  • time
  • place
  • transport, and
  • media
Rules for using prepositions chart

Time

Use IN for enclosed time periods.

  • in December
  • in the summer
  • in 1997
  • in the ’90s
  • in the summer, winter, etc.
  • in the morning
  • in the afternoon
  • in the evening

Use ON for specific days, dates, and holidays.

  • on Monday
  • on weekends
  • on January 22
  • on my birthday
  • on Christmas
  • on vacation

Use AT for times of the day.

  • at 6:00pm
  • at midnight (12 am)
  • at lunchtime (12 pm)
  • at night (but in the morning, in the afternoon, and in the evening)

Location

Hand on map with camera, passport, laptop, and coffee, perfect for travel planning inspiration.

Think of IN for enclosed spaces and places with borders,ย like rooms, towns, cities, counties, states, countries, and continents

  • in the kitchen
  • in Sydney
  • in Australia
  • in the south
  • in the world
  • in the universe

Use IN with geographical locationsย and bodies of water (if you’re swimming.)

  • in the mountains
  • in the forest
  • in the desert
  • in the water
  • in the lake
  • in the ocean


  • on 10th Ave.
  • on the border
  • on the coast
  • on the first floor
  • on the roof

Use ON for surfaces.

  • on the ground
  • on the floor
  • on the wall
  • on the beach (if you’re tanning.)
  • at the supermarket
  • at the beach
  • at the library
  • at the zoo
  • at the restaurant
  • at the mall
  • at home

Preposition Rules Worksheets

Ready to practice? Get the In, On, At Prepositions worksheets here.

Transportation

For transportation, remember these guidelines:

  • in a car
  • in a truck
  • in a taxi
  • in an Uber
  • in a small boat or kayak
  • on the bus
  • on a plane
  • on a ship or cruise
  • on a train
  • on the subway
  • on the trolley

Useย ON for things that one person can sit or stand on.

  • on a bicycle
  • on a motorcycle
  • on a horse
  • on a surfboard
  • on a skateboard

Useย AT for places where you wait for transport.

  • at the bus stop
  • at the taxi stand
  • at the airport
  • at the train station
  • at a stop sign
  • at an intersection
  • at a crosswalk

Media

media prpositions for photos, tv, news, and internet

Use IN for paper media.

  • in a book
  • in a newspaper
  • in a magazine
  • in a dictionary
  • in a journal
  • in the comments
  • in a blog post

Use ON for electronic media and technology.

  • on the internet
  • on tv
  • on the radio
  • on the phone
  • on social media
  • on facebook, instagram, WhatsApp, etc.

Use AT or the @ symbol for

  • websites
  • url’s
  • emails

I hope you learned a lot about prepositions from this lesson!

Let me know if it helped you in the comments below.

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Happy speaking!

Elsa

3 Comments

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  1. This information is really interesting and helpful ๐Ÿ™‚ I speak spanish, so these prepositions are kind of difficult for me. Thank you!

    • I’m so glad it helped you! I’m learning Spanish, and it’s the same for me- with “para” and “por”. ๐Ÿ™‚