When working through the grammar questions in the Knowsys blog, you'll see lots of references to "The Knowsys Big 8 Grammar Rules." Here's the list. We recommend you memorize the list and the questions and then use them to analyze the grammatical elements tested.
The Knowsys Big 8 Grammar Rules
Is the expression or word choice correct?
2. Sentence Structure
Is it a complete sentence (good)?
Is it a run-on (bad)?
Is there a comma splice (bad)?
3. Subject-Verb Agreement
Where’s the subject? Where’s the verb? Do they agree?
4. Pronoun-Antecedent Agreement
Is there one and only one clear antecedent?
Does the pronoun match the antecedent in gender and number?
Is the modifier clear and effective?
Is the modifier close to what it modifies?
Are the items in a series in parallel format?
What is being compared grammatically?
Is the comparison clear and logical?
Is the sentence clear and concise?
Is the voice active?
Is there no redundancy?