Montague grammar is like a special way of talking or writing that helps us understand how words work together to make sentences.
Imagine you are playing with blocks and you want to build a tower. You need to put the right blocks in the right order to make a sturdy tower, right? That's kind of like what Montague grammar does with words.
Let's say you want to say "The cat is on the mat." Montague grammar helps break that down into different parts. For example, "The" is an article that tells us we are talking about a specific thing. "Cat" is a noun that tells us what that specific thing is. "Is" is a verb that tells us what the cat is doing. "On" is a preposition that tells us where the cat is. "The" shows up again before "mat," telling us we're talking about a specific mat.
Montague grammar helps us understand all the different parts of a sentence and how they fit together to make sense. It's like following a recipe to make the perfect tower of blocks, except it's a recipe for making sentences that make sense.