University of Ottawa (Canada)
University of Ottawa: Hyper Grammar: Building Sentences
An excellent site which outlines the types of sentences - simple, compound, and complex. Gives in-depth information and examples of each. Includes review exercises for practice or assessment.
Grammar Check
Grammar Check: 15 Shocking Student Writing Fails (Infographic)
This infographic is provided to help alert students about common writing mistakes. The following types of errors are discussed: commas, verb tenses, subject-verb agreement, apostrophes, pronouns, and prepositions.