SAT and ACT Grammar Complete SAT and ACT Grammar and Punctuation Rules Guide to non-essential clauses How to use an apostrophe How to use dashes on the SAT and ACT No comma before or after a preposition How to Recognize and Correct Dangling Modifiers SAT®/ACT® Idiom List Read each passage entirely; don’t just jump from question to question Commas with names and titles, simplified Comma + And/But = Period = Semicolon It’s vs. its vs. its’ Comma splices and how to fix them The trickiest SAT/ACT transition questions How to answer add/delete/revise questions on the SAT and ACT Commas and parentheses: when can you double up? 7 skills you need for a perfect SAT Writing/ACT English score My top ACT English strategy tip Shorter is better How to use a colon Who and whom: what to know for the SAT and ACT No semicolon before “and” or “but” Present Perfect, Simple Past, and Past Perfect Prepositions and prepositional phrases