2. The Main uses of Apostrophes  To create possessives of nouns.  To show the omission of letters.  To indicate certain plurals of lowercase letters

3. Creating Possessives Of Nouns to make a possessive, turn the phrase around and make it an "of the..." phrase. Such as: the girl’s dress = the dress of the girl /or four days’ drive= drive of four days if the noun after “of” is a building, an object, or a piece of furniture, do not use a apostrophe : room of the hotel= hotel room Then follow the rules : Singular form of a word add ‘s even if it ends is s. the owner’s car Plural forms that don’t end in s need to add ‘s. / the herd’s food. Add ‘ to the end of plural noun that ends in s / two cats’ toys Add ’s to the enad of compound words./ my father-in-law’s money. Add ‘s to the last noun to show joint possession of an object. /Todd and Anne’s dorm

4. Showing omission of letters  Apostrophes are used in contractions. Contractions are common in speaking and in informal writing.  Words such as / don't = do not /I'm = I am he'll = he will/ who's = who /didn't = did not They take the place of letters and combine words.

5. Forming plurals of lowercase letters  Apostrophes are used to form plurals of letters that appear in lowercase; here the rule appears to be more typographical than grammatical, e.g. "three ps" versus "three p's." To form the plural of a lowercase letter, place 's after the letter.  Nita's mother constantly stressed minding one's p's and q's.

6. When not to use apostrophes  Don't use apostrophes for personal pronouns, the relative pronoun who, or for noun plurals. Wrong: his’ book. who’s dog is this? Correct: his book. whose dog is this?

7. Works cited "Welcome to the Purdue OWL." Purdue OWL: Apostrophe. N.p., n.d. Web. 19 Sept. 2012..