This week students have been focussing on possessive apostrophes in class.
To indicate the possessive
This is Collin's book.
This book is Ivan's.
The dog's dinner looks disgusting.
Diana was the people's princess.
tore up the men's shirts.
One should choose one's words carefully.
It is everyone's duty to protest.
It is no-one's responsibility.
Personal pronouns (words like I, you, he, she, it, we, they) indicate the possessive by becoming a whole new word. These new words are already possessive, so they don't need an apostrophe: my, mine, your, yours, his, her, hers, its, our, ours, their, theirs. Note that none of them has an apostrophe.
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