Using adjectives and adverbs correctly isn’t rocket science. However, misuse has become so common, that most college students don’t know the difference between the adjective “sure” and the adverb “surely” or the adjective “real” and the adverb “really.” Misuse has become so common, it is possible that in the future adverbs may disappear from
Linking verbs are verbs that show no action. Since all “be” verbs are linking verbs, the way to test if a verb may be a linking verb is to substitute a known linking verb for the word in question. If the sentence makes sense, then the word is a linking verb.
Because of their meaning, some adjectives and adverbs can only exist in the positive degree. These words are already superlative in their meaning. If they are modified, they become illogical. For example, unique means one of a kind. It is impossible to be more unique, very unique, or mostly unique.
Words such as perfect, unique, excellent, impossible, parallel, empty, and dead may not have comparative or superlative forms. However, they may be modified to suggest a state nearing the absolute condition implied by the modifier.