Questions & Answers about यह दवा की गोली है।
Here is the sentence broken down:
- यह = this
- दवा = medicine
- की = of / a possessive marker here
- गोली = pill / tablet
- है = is
So the structure is literally something like:
This medicine-of pill is.
Natural English is: This is a medicine pill/tablet or This is a pill of medicine, depending on context.
Hindi possessive markers change to agree with the noun that comes after them.
The three common forms are:
- का for masculine singular
- की for feminine singular
- के for masculine plural (and some other cases)
In दवा की गोली, the possessed noun is गोली, and गोली is feminine singular. So the correct form is की.
That is why it is:
- दवा की गोली = medicine pill
not:
- दवा का गोली ❌
- दवा के गोली ❌