This document discusses intensifiers, which are adverbs or phrases that strengthen the meaning of other expressions and show emphasis. Some common intensifiers are very, really, and extremely. Intensifiers are often used with adjectives to make them stronger, such as using "very" with "big" or "small." The document provides examples of intensifiers being used and cautions that some strong adjectives do not typically take intensifiers. It also includes an exercise to identify intensifiers in sentences.