Superlative adjectives are used to compare at least 3 things or 3 groups of things. When we want to state that something is at the highest or the lowest degree, than we use superlative adjectives. In other words that the superlative adjectives state that something is the most, there can't be anymore or that something is the least, there can't be any less.
- I am in the smallest
class in the school.
- The house at the end of the street is the
It is common that "the" is used before the superlative adjective.
- We live in the biggest house on the block.
- My brother is the tallest person in our family.