| Sentences: Complex | The sentences lack syntactic complexity and vary little, if at all, in structure. The sentences tend to be relatively simple in structure, following a basic subject-verb-object pattern perhaps with a few additional elements, such as brief introductory phrases, prepositional phrases, or modifiers. | Complex syntactic structures are present but may not always be managed effectively; sentence structures may be varied but are not often sophisticated. | Consistent and appropriate use of a variety of sentence structures, including sophisticated sentence structures, such as complex, compound, or compound-complex sentences, and other complex syntactic forms, such as extended participial phrases and relative clauses. | Conventions: Usage | Usage errors (such as incorrect word forms, subject-verb agreement, unaccountable shifts in POV) are numerous enough to distract a reader and/or interfere with meaning. Patterns of usage errors may be evident, suggesting that the writer lacks an understanding of basic usage rules and conventions. | Usage is generally correct. There may be errors but they are neither numerous enough nor serious enough to indicate that the writer lacks a basic understanding of the rules for usage. | Usage is correct. Usage errors, if any, are common and very minor. |
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