Possessive Adjectives and Pronouns — English Grammar Exercises
my or mine? your or yours? its or it's? Master every possessive form with 60 exercises.
Possessive Adjectives and Pronouns: Quick Reference Guide
Possessive forms in English — my vs mine, your vs yours, its vs it's — are a persistent source of errors for B1–B2 learners. Analysis of the Cambridge Learner Corpus reveals that possessive errors account for roughly 12% of determiner mistakes in intermediate-level writing. The its/it's confusion alone appears in over 8% of all learner texts at this level, making it one of the most frequently flagged errors by automated grammar checkers. What makes English possessives especially tricky is the dual system: adjective forms (my, your, her) go before nouns, while pronoun forms (mine, yours, hers) stand alone — a distinction that many European and Asian languages handle differently. These 60 exercises systematically cover every possessive pattern from basic adjective-vs-pronoun choices to the subtle "of mine" construction and commonly confused homophones.
Possessive Adjectives vs Possessive Pronouns
Adjectives go before a noun; pronouns replace the noun:
| Subject | Adjective | Pronoun |
|---|---|---|
| I | my book | The book is mine |
| you | your idea | The idea is yours |
| he | his car | The car is his |
| she | her phone | The phone is hers |
| it | its tail | — |
| we | our team | The team is ours |
| they | their house | The house is theirs |
Its vs It's, Whose vs Who's
These homophones trip up even native speakers:
it's = it is / it has: "It's been a long day."
whose = possessive: "Whose bag is this?"
who's = who is / who has: "Who's ready to go?"
The "Of Mine" Construction
Use of mine/yours/his/hers/ours/theirs after determiners like a, this, some, any:
that idea of yours (NOT that your idea)
some colleagues of his
Common Mistakes
✗ The cat hurt it's paw. → ✓ The cat hurt its paw.
✗ This is a my friend. → ✓ This is a friend of mine.
✗ Who's jacket is this? → ✓ Whose jacket is this?
Frequently Asked Questions
What is the difference between possessive adjectives and possessive pronouns?
Possessive adjectives (my, your, his, her, its, our, their) go before a noun: 'This is my book.' Possessive pronouns (mine, yours, his, hers, ours, theirs) replace the noun entirely: 'This book is mine.' The key test: if a noun follows, use the adjective; if nothing follows, use the pronoun.
What is the difference between its and it's?
'Its' (no apostrophe) is the possessive form: 'The dog wagged its tail.' 'It's' (with apostrophe) is a contraction of 'it is' or 'it has': 'It's raining.' This is one of the most common spelling errors in English — even native speakers confuse them. Tip: if you can replace the word with 'it is', use 'it's'.
What is the difference between whose and who's?
'Whose' is the possessive form used to ask about ownership: 'Whose jacket is this?' 'Who's' is a contraction of 'who is' or 'who has': 'Who's coming to the party?' The same apostrophe rule applies: if you can expand it to 'who is', use 'who's'; otherwise use 'whose'.
How do you use the 'of mine' construction in English?
The 'of mine/yours/his/hers/ours/theirs' construction is used after 'a', 'an', 'this', 'that', 'some', 'any', numbers, and other determiners: 'a friend of mine', 'that idea of yours', 'some colleagues of his'. You cannot say 'a my friend' — English doesn't allow two determiners together before a noun.