Check your writing twice for misuse of these easy-to-miss homonyms, which a spell-checker won’t catch:
__ Its versus It’s. This could be the most common error in the English language. The first is the possessive form of “it,” while the second is a contraction of “it” and “is.”
__ Affect versus Effect. The rule, basically, is this: “Affect” is a verb and “effect” is a noun.
__ Would Have versus Would Of. They sound the same, but “would of” is always incorrect.
__ Supposed To versus Suppose To. As in the example above, these two phrases sound the same, but only “supposed to” is correct.
__ Then versus Than. “Than” is used when making a comparison. “Then” helps convey the sequence of events.
__ Allude versus Elude versus Illude. “Allude” means to refer directly; “Elude” means to dodge; “Illude” means to cheat or play tricks upon.