Boundaries

Comma splices are the SAT's favorite trick in this category. You'll see two complete thoughts joined by nothing but a comma, and you'll need to fix it. These questions test your ability to recognize where sentences and clauses begin and end.

Your toolkit is small but powerful: periods, semicolons, commas with coordinating conjunctions, and colons. Fragments are tested too, so make sure every "sentence" has a subject and a verb forming a complete thought. Speed comes from pattern recognition here.