In 1-2 sentences, explain how to use an apostrophe to show possession for singular and plural nouns and to form contractions

To show possession for singular nouns, place an apostrophe followed by the letter "s" at the end of the noun, and for plural nouns, place an apostrophe after the "s" at the end of the word; to form contractions, replace one or more letters with an apostrophe to indicate the omitted letters.

To show possession for a singular noun, place an apostrophe before the "s"; for plural nouns ending in "s," place an apostrophe after the "s," and for plural nouns not ending in "s," place an apostrophe before the "s." To form contractions, place an apostrophe in place of the omitted letters.

To show possession for singular nouns, add an apostrophe followed by an 's' at the end of the noun (e.g., "The book's cover"). For plural nouns, add an apostrophe after the 's' at the end of the noun (e.g., "The students' books"). To form contractions, replace missing letters in words with an apostrophe (e.g., "can't" instead of "cannot").