Grammar and Usage
These Grammar and Usage questions are aligned with the ACT from ACT, Inc. in United States.
Select a difficulty level to start practicing. Easy exams are free. Medium and hard exams require a premium subscription.
Grammar and Usage is the highest-frequency category on the ACT English, covering subject-verb agreement, pronoun-antecedent agreement, verb tense consistency, and modifier placement. These practice tests isolate each grammar rule so you can identify which specific patterns cause the most errors for you. Mastering Grammar and Usage on the ACT is the single fastest way to raise your ACT English score.