This video lesson from Yossarian the Grammarian explains how to determine if a clause is restrictive or nonrestrictive. He also shows where to place each comma after identifying the type of clause. [7:14]

This video lesson from Yossarian the Grammarian demonstrates how to punctuate restrictive clauses and phrases. He also show the viewer how to revise restrictive clauses for clarity. [7:24]

David and Paige, KA's resident grammarians, cover appositives and how to use commas along with them.