A preposition is used to link nouns, pronouns and phrases to other words in a sentence. The word or phrase that the preposition introduces is called the object of the preposition. A preposition is used to indicate the temporal, spatial or logical relationship of its object to the rest of the sentence. Here are some examples of the prepositions “on” and “over”:
Used to express a surface of something:
The pencil is on the desk.
I put the silverware on the kitchen table
My homework is on the teacher's desk.
Used to specify days and dates:
The garbage truck comes by my house on Thursdays.
I was born on the 3rd day of August in 1959.
We're having a big celebration on the fourth of July.
Used to indicate a device or machine, such as a phone or computer:
Robert is on the phone right now.
Steve has been on the computer since early this morning.
My favorite TV show will be on tonight.
Used to indicate a part of the body:
The rock struck my car on the windshield.
She kissed her friend on his cheek.
I wear a baseball hat on my head
Used to indicate the state of something:
The building across the street is on fire.
That beautiful blue vase is on sale.
All the lights in the building have been turned on.
Used to indicate movement from one place to another:
Can you come over to my house tonight for dinner?
We need to roll the log over.
They pushed the boulder over the edge of the cliff.
Used to indicate movement downward:
The maple tree fell over onto the road during the storm.
I had to bend over to pick up the pencil that fell off my desk.
I fell over and broke my arm.
Used to indicate more than an expected number or amount:
Children over the age of 12 pay full price.
The price is over what I am willing to pay.
The phone rang for over a minute before I could answer it.
Used to indicate a period of time:
I worked for the company for over five years.
I had to wait for over an hour.
He has not been home in over a year.
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