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Grammar and Punctuation

 

Core Proofreading Issues

Sentence Boundaries (Fragments, Run-ons, Comma Splices)

What is Subject-Verb Agreement? (introductory video)

Subject-verb agreement (from the Purdue OWL)

Pronoun-antecedent agreement (from Grammar Girl: Quick and Dirty Tips)

Mixed constructions (From Swarthmore's Writing Center)

 

When to Use Commas

  Seven Tips for Commas (In-depth explanations)

  Using a Comma (the basics)

 

Additional grammar and punctuation issues 

Colons, Dashes, and Semicolons

Apostrophes and Possessives

Dangling Modifiers