Use of many a/an in a sentence

formal + literary   This is used with a singular noun to refer to a large number of things or people. Many a pupil goes to school by bus. Ma...

formal + literary 

This is used with a singular noun to refer to a large number of things or people.

Many a pupil goes to school by bus.

Many a doctor has tried but few doctors have succeeded.

She has been there many a time.

In terms of structure: many a/an comes with a singular noun, and the accompanying verb is also singular.