Adjective predicates

I have sentence:

When other people talk, you should be attentive.

Can someone tell me what the adjective is and what the adjective modifies.

[Casiopea]

Originally Posted by ozzyl88

I have sentence:

When other people talk, you should be attentive.

Can someone tell me what the adjective is and what the adjective modifies.

The verb is underlined. The subject is in blue and the adjective that modifies it is in pink:

You should be attentive.

When the adjective comes before a noun, it's called an attributive adjective, and when the adjective comes after the verb To Be (i.e., be, is, am, are, were, was, etc), it's called a predicate adjective.

You should be attentive. (Predicative: BE + adjective)
She is an attentive student. (Attributive: Adjective + Noun)

The difference between attributive and predicative adjectives is distance, or proximity. Attributive adjectives are next to, or close to the nouns they modify, whereas predicate adjectives are far away from the nouns they modify:

You should be attentive. (Predicative: far away)
She is an attentive student. (Attributive: next to, close)