HOW TO SOUND SMARTER ( PART 1 )

• You almost never mean: Impact.     you almost always mean: Affect.   Why: Impact shouldn't be forced into service as a verb.   No: "The decision impacts everyone."  Yes: "The decision affects everyone".
• You never mean: Off of.    you always mean: Off.   Why: Some words are perfectly fine on their own.  "May I bounce an idea off you?"
• You almost never mean: In order to.    you almost always mean:  To.  Why:  See above.
• You never mean: Comprised of.     you always mean: Comprises.  Why: Comprises equals includes.  You'd never say "My grocery list includes of milk, eggs, and kiwis."  Same goes for comprises. (Use of with compose: "The sculputure is composed of wire hangers.")
• You never mean: Everyone has their grammer hang-ups.     you always mean: Everyone has his or her grammer hang-ups.  Why: Everyone, everybody, and close cousin each are singular, so words that refer to them should also be singular.  Or, since we all have our grammer hang-ups, you could just rephrase the sentence.