A dummy pronoun is a special word that we use to fill in a sentence when we don't have a real subject. It's like using a pretend person to make sure our sentence makes sense. This word is usually "it" or "there."
For example, if we say "It is raining today," we don't have a real subject like "the sky" or "the clouds." So we use "it" to pretend like there's someone or something doing the action of raining. It helps us complete our sentence and communicate our message clearly.
Likewise, if we say "There is a bird in the tree," we might use "there" because we don't have a specific subject yet. We want to say something exists in a certain place, so we use "there" to help us do that.
Dummy pronouns might seem a little silly, but they help us speak and write more effectively!