21. Adjectives may be classified, according to their position in the sentence, as attributive, appositive, and predicate adjectives ([p. 76]).
1. An attributive adjective is closely attached to its noun and regularly precedes it.
2. An appositive adjective is added to its noun to explain it, like a noun in apposition.
3. A predicate adjective completes the meaning of the predicate verb, but describes or limits the subject.
For the use of an adjective as predicate objective, see [§ 488].
22. The comparative degree, not the superlative, is used in comparing two persons or things.
The superlative is used in comparing one person or thing with two or more ([p. 88]).
23. Relative adverbs introduce subordinate clauses and are similar in their use to relative pronouns ([p. 86]).
24. A verb must agree with its subject in number and person ([p. 97]).
25. A compound subject with and usually takes a verb in the plural number ([p. 100]).