The Tongue Untied
The Tongue Untied: Phrases
This page, from a site for University of Oregon journalism students, provides definitions of phrase, prepositional phrase, participial phrase, gerund phrase, and infinitive phrase. It also provides a brief description of how phrases...
University of Victoria (Canada)
Where Does the Comma Go?: Introductory Elements
This page, from an online guide to commas by a faculty member from the University of Victoria, explains the rules governing comma usage after introductory phrases.