An apostrophe can be used to show that one thing belongs to or is connected to something. This is called a possessive apostrophe. Let's take a look at some examples. The cat's tail was fluffy.

I noticed a letter over the signature "William H. Arnoux," which contained this statement: "The apostrophe 's' is an abbreviation of the pronoun his, and it was once so written, as is found in the ...

When you want to show that something belongs to that person or thing, you add a possessive apostrophe and an 's'. For example: The cat's tail was fluffy. The 's' shows that the tail belongs to the ...