Add only an apostrophe with proper nouns ending in “s”
Pronouns form possessive cases the same way nouns do
O’ Clock is the contraction for of the clock
Singular nouns add an apostrophe and an “s”
They stand for something that’s missing
Right way to form the plural of a noun is to not use an apostrophe
Only a possessive showing joint possession is formed by making the last word a possessive
Plurals of letters, numbers, and signs are formed using an apostrophe
Hats belonging to a girl would be said by saying “the girl’s hats”
English language uses them in two ways