Online Writing Lab at Purdue University
Purdue University Owl: Commas With Non Essential Elements
This tutorial focuses on the use of commas in nonessential elements whether they are words, phrases, or clauses. Links to practice exercises are provided.
Online Writing Lab at Purdue University
Purdue University Owl: Commas After Introductions, Exercise 1
Use this exercise to determine your understanding of comma usage with introductory elements in sentences.
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English Worksheets Land
English Worksheets Land: Using Commas With Introductory Phrases [Pdf]
This worksheet requires that you identify correctly punctuated sentences with introductory elements, then correct those which are incorrect.
California State University
California State University Domingues Hills: Comma Usage: Introductory Phrases
This fifteen-item instructional activity will help you determine how well you understand how to use commas with introductory elements in a sentence.
Online Writing Lab at Purdue University
Purdue University Owl: Commas After Introductions
This lesson from Purdue's Online Writing Lab provides a definition of phrase and instructions on how to punctuate different types of introductory phrases. There is also a link to an exercise on this topic.
English Worksheets Land
English Worksheets Land: Commas With Introductory Phrases [Pdf]
Practice placing commas after introductory elements in ten sentences.