Other
Western Grammar: Module 2: Advanced Sentence Structure
Online grammar textbook explaining sentence structure provides definitions of different types of subordinate clauses and exercises related to this topic. There is also information on phrases and other components of sentences.
Other
Bob's Byway: Glossary of Poetic Terms
Calling itself "unique," Bob's is easy to use, with cross-links throughout, phonetic pronunciation guides when necessary, and many examples and quotations. Click on the letter and scroll for the word.
Grammar Tips
Grammar Tips: Faulty Parallelism in Coordinate Elements: Short Version
This resource presents many examples of awkward and faulty parallelism which could be used for a class writing exercise, as well as for a guide to constructing correct sentences.
Love To Know Media
Your Dictionary: 8th Grade Grammar
This article discusses the grammar usually learned in the 8th grade including more concise and clear writing, speaking, and thinking; how to clearly combine ideas; more comma rules, and parallel structure.
Capital Community College Foundation
Guide to Grammar and Writing: Parallel Structures Quiz
Capital Community College provides this 9 question quiz to test your knowledge of solid sentence writing. Each answer will be explained when you hit the "Submit application," button at the end of the quiz.