Question

What are the adjectives in this sentence? Many rain-forest plants reach enormous sizes that may seem unbelievable.
Ms. Sue
Which words do you think are adjectives? We'll be glad to check your answers.
Jared
many, enormous,
Ms. Sue
That's a start.

What else modifies plants? What else modifies sizes?
Jared
rain-forest
Ms. Sue
Right.

And unbelievable modifies sizes.