Why is father in plural?

[Kriszta]

Hi,
Please, why is father in plural in this sentence?

I grew up thinking hard physical work was what fathers usually did.

Thank you in advance,
Kriszta

[Yankee]

Hi Kriszta

The plural form of a noun can be used to refer generally to all of the things/people in a certain category. Thus, in your sentence, the word "fathers" refers to all fathers in general.
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