Revising for Connection > Parallel Sentence Structure
Parallel structures are a particularly powerful way to communicate information because they create structural repetitions that emphasize and connect ideas. In grammatical terms, two structures are parallel if they have the same grammatical form (both verbs or both nouns, for example). These parallel items or ideas are often coordinated as items in a list.
Identifying lists that are not presented in parallel is much more difficult for writers than for the readers of their work. Writers know how their ideas relate and tend not to notice when points are not parallel. Without parallel structures, readers may fail to recognize how ideas connect and may be confused by what they read. The following diagram illustrates the patterns for parallel sentence structure.