A pronoun used to refer to a thing previously mentioned or easily identified. pronoun
I found a wallet on the street and returned it to its owner.
The cake is delicious; I can't stop eating it.
Used to refer to a baby or animal of unspecified sex. pronoun
The puppy is so cute; I just want to cuddle it.
When the baby cries, you need to comfort it.
Used in the place of a noun to refer to a fact, situation, or experience. pronoun
It's raining outside, so take an umbrella.
I heard a noise, but I don't know what it was.
Used as the subject of an impersonal verb, especially to indicate time, distance, or weather. pronoun
It's 5 o'clock already.
It's 10 miles to the nearest town.
Used to emphasize a following part of a sentence. pronoun
It was John who broke the vase.
It is the responsibility of the manager to ensure quality.