The pattern that best describes the pattern of the sentence: "Good writing is carefully constructed is Subject-Linking Verb-Predicate Adjective
"Good writing" is the subject.
"Is" is the linking verb.
Carefully is an adjective and constructed works as an adjective. Both conform the predicate adjective.
A predicate adjective modifies the subject of the sentence. The subject and the predicate adjective are connected by a linking verb, in this case IS. Linking verbs are unique because they connect the subject with the descriptive adjective.