Contractions are useful in both spoken and written language. They save time, use fewer letters than full words, and help us to sound less formal when the situation calls for it. Contractions are combinations of two words and, in most cases, the apostrophe indicates where letters are omitted. Here’s a handy list of contractions.
Common contractions Do + not = Don’t (The apostrophe tells us that a letter, O, has been removed.) Are/is + not = Aren’t/isn’t They + are = They’re It + is/has = It’s Could/Would/Should + have = Could’ve/Would’ve/Should’ve Could/Would/Should + not = Couldn’t/Wouldn’t/Shouldn’t We + are = We’re Will + not = Won’t (This is the slight exception to the rule that the apostrophe replaces the dropped letters.