Final answer:
Comparative adjectives usually have suffixes like -er or -ier.
Step-by-step explanation:
Comparative adjectives are used to compare two or more things. They usually end in the suffixes -er or -ier. For example, 'bigger' is the comparative form of 'big', and 'happier' is the comparative form of 'happy'. However, there are some irregular comparative forms as well, such as 'better' for 'good', and 'more' for longer adjectives like 'beautiful'.
Learn more about Comparative Adjectives