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Prepositions "On", "At", and "In"

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Prepositions "On", "At", and "In"

A preposition is a word that links a noun, pronoun, or noun phrase to some other part of the sentence.

  • to the office
  • at the desk
  • on the table
  • in an hour
  • about myself

A preposition is used to show direction, location, or time, or to introduce an object.

On

Used to express a surface of something:

  • I put an egg on the kitchen table.
  • The paper is on my desk.

Used to specify days and dates:

  • The garbage truck comes on Wednesdays.
  • I was born on the 14th day of June in 1988.

Used to indicate a device or machine, such as a phone or computer:

  • He is on the phone right now.
  • She has been on the computer since this morning.
  • My favorite movie will be on TV tonight.

Used to indicate a part of the body:

  • The stick hit me on my shoulder.
  • He kissed me on my cheek.
  • I wear a ring on my finger.

Used to indicate the state of something:

  • Everything in this store is on sale.
  • The building is on fire.

At

Used to point out specific time:

  • I will meet you at 12 p.m.
  • The bus will stop here at 5:45 p.m.

Used to indicate a place:

  • There is a party at the club house.
  • There were hundreds of people at the park.
  • We saw a baseball game at the stadium.

Used to indicate an email address:

  • Please email me at abc@defg.com.

Used to indicate an activity:

  • He laughed at my acting.
  • I am good at drawing a portrait.

In

Used for unspecific times during a day, month, season, year:

  • She always reads newspapers in the morning.
  • In the summer, we have a rainy season for three weeks.
  • The new semester will start in March.

Used to indicate a location or place:

  • She looked me directly in the eyes.
  • I am currently staying in a hotel.
  • My hometown is Los Angeles, which is in California.

Used to indicate a shape, color, or size:

  • This painting is mostly in blue.
  • The students stood in a circle.
  • This jacket comes in four different sizes.

Used to express while doing something:

  • In preparing for the final report, we revised the tone three times.
  • A catch phrase needs to be impressive in marketing a product.

Used to indicate a belief, opinion, interest, or feeling:

  • I believe in the next life.
  • We are not interested in gambling.
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