Curated OER
Conquering the Comma
Thoroughly review where to put commas: after an introductory clause, before a coordinating conjunction, around nonessential phrases, etc. Furthermore, avoid comma splices by adding a conjunction or semicolon or by starting a new sentence...
Online Writing Lab at Purdue University
Purdue University Owl: Exercise: Commas With Nonessential Elements Exercise 2
This Purdue University OWL (Online Writing Lab) provides practice with identifying essential and nonessential phrases and clauses. Students will complete the sentences and provide commas where necessary.
Sophia Learning
Sophia: Comma Sense
Notes, a PowerPoint presentation, and a video introducing commas, their purpose, and common usage mistakes. Comma rules and examples concerning coordinating clauses, items in a list, introductory elements, and nouns of direct address are...
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.
Online Writing Lab at Purdue University
Purdue University Owl: Exercise : Commas After Introductions Exercise 3
This resource provides practice with writing and punctuating sentences with introductory elements.
Sophia Learning
Sophia: Commas With Introductory Elements: Lesson 1
This lesson introduces how to use commas with introductory elements. It is 1 of 3 in the series titled "Commas with Introductory Elements."