You are hereHome » Majors and Programs » Arts, Learning Resources and Pathways Division » Writing Center » Grammar, Punctuation and MechanicsGrammar, Punctuation and Mechanics Click on an item below to access handout. On the Use of Commas Apostrophes and Contractions Capitalization Colons and Semicolons Summary of Punctuation Marks List of Common Prepositions Recognizing Prepositional Phrases Main Verbs and Helping Verbs Misplaced Modifiers Pronoun Agreement