The apostrophe ( ‘ ) is perhaps the most abused punctuation mark in the English language. There are two situations where an apostrophe can properly appear.
The first use of the apostrophe is within contractions. Some might say that contractions don’t belong in proper written English, but these days, there seems to be any number of proper places for slang or casual language to be used and understood without offense. Therefore, common contractions like don’t (do not), haven’t (have not), it’s (it is, it has), he’d (he had, he would), etc. appear often. The apostrophe replaces one or more letters, usually from the second word, such that the spelling approximates the common pronunciation of the phrase which has been condensed into a single word. Note that the space between the words of the original phrase is discarded within the contraction.
Some contractions are merely shortened versions of one original word, rather than a phrase, but these are generally considered a more extreme version of slang, and they are not as well accepted in proper written English. Examples include ‘n or ‘n’ (and), ‘cause or ‘cos (because) , wha’? or whu’? (what?). I personally avoid such contractions in all but the most private, casual writing.
The other standard use of the apostrophe is to indicate the possessive case of a noun, along with the letter s. The possessive form of a singular or plural noun appends ’s to the noun, except when the nouns already ends with s, in which case the possessive form appends merely an apostrophe. Examples: head of a cat -> a cat’s head, wife of Bobby Kennedy -> Bobby Kennedy’s wife, color of the dishes -> the dishes’ color, house where the Smiths live -> the Smiths’ house. Note that personal pronouns are special cases and do not follow these rules; these will be covered in a later post.
It is not correct to use ’s to indicate plural, although you will see this form used with numbers (in the 1900’s should be in the 1900s, and learn your ABC’s should be learn your ABCs.) so often that we sticklers of proper English might have to relent some day. Still, you have the choice of which way you’ll write it, and more people will find the non-apostrophized form agreeable than the apostrophized one.
