Apostrophes Use with Contractions they’re class of ’14 it’s Use an ’s to form the plural of a word discussed or a letter. (Not needed for numbers, symbols, and dates) There are two perhaps’s in that sentence. The word occurrence is spelled with two r’s.

Apostrophes the 60s the 1800s Possessives: No apostrophe is needed centuries and decades the 60s the 1800s Possessives: Singular Nouns (exceptions: Jesus’/Moses’) ’ + s = possessive Dr. Fisher’s Plural Nouns (that end in s) ’= possessive classes’ calendars Compound Nouns ’ + s = possessive mother-in-law’s

Apostrophes Joint possession: Use ’s on the last noun if the two share possession. mom and dad’s room Use ’s after both if the two have separate possession. Bush’s and Clinton’s presidencies