One of the most frustrating grammar topics encountered on the SAT and ACT (and in life in general, really) is the correct use of subject and object pronouns—specifically when to use who (subject pronoun) and when to use whom (object pronoun). Who cares, you might ask? (Or should that be "Whom cares?") But getting this right is easy, and getting it wrong can cost you points, so it's worth reviewing.

Here's a simple, non-technical way to tell the difference between a subject and an object: The subject of a sentence or independent clause is the thing doing the action; the object is that thing that the action is done to. Simple, right? Here's an example:

After a large bouquet of pink roses was clandestinely delivered to the sorority house, the girls were in a frenzy all afternoon, as no one knew the sender of the bouquet, nor for whom it was intended.

If you’re taking the ACT on Saturday, you may be wondering how to best spend your remaining study time. We are big fans of the tried and true saying, practice makes perfect. But if you're not up for a complete practice test and would rather focus on specific sections of the test, here are some last minute study recommendations:

1. English: Write out a list of everything that continues to confuse you when it comes to punctuation, grammar, and sentence structure. Not sure about the difference between "affect" and "effect"? Always guessing when to put a comma in the sentence? Look up the answers to any of your grammatical sticking points and write down the rules. Also, practice writing out a few examples of the correct usage: Obesity affects many Americans. Obesity may be the effect of a poor diet. Review your list for the next couple of days and look it over while you're eating your power breakfast before the test.