I am confused about the usage of preposition in this sentence:

"They work hard ____ the field everyday".

What should fill the blank?
a/ On
b/ In


The correct preposition here is in.

In cases like this, the field is a place or location, so the preposition is in.

He works in a bakery.
She works in a bank.
They work in a bookshop.

When the object in the sentence is an object (a thing), then the preposition would be on.

He works on computers.
She works on innovative projects.
They work on improving performance.

  • 1
    A quibble. If "the field" is a playing field for a sporting event - so that 'they' are groundskeepers - then "on the field" would be correct. Just as "I worked on the car".
    – John Feltz
    Jul 12 '19 at 17:58
  • 1
    @JohnFeltz What is your quibble? "I am a mechanic, I work on cars.", "I am a groundskeeper, I work on the playing field." Then the field is the object that is worked on, rather than describing a location. :-)
    – Mick
    Jul 15 '19 at 6:08

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