1. More than an object: whose is it, or who is it connected with?
Book names an object; my book adds its connection with me. My, your, his, her, its, our, and their are traditionally called possessive adjectives. The more precise grammatical term is possessive determiners: they help identify which thing or person is meant.
First consider the person or thing connected with the noun: I → my; you → your; he → his; she → her; it → its; we → our; they → their. These are established forms; you do not create them by adding an ending.
who? → whose? → possessive form + noun
- noun —
- A word naming a person, thing or idea: student, book, happiness.
I have a ticket. My ticket is here.
I have a ticket. My ticket is here.
The speaker is talking about their own ticket: I → my.
You have a key. Your key is here.
You have a key. Your key is here.
The speaker addresses the owner of the key: you → your.
He has a bag. His bag is small.
He has a bag. His bag is small.
The owner has already been identified as he, so use his.
She has a bike. Her bike is old.
She has a bike. Her bike is old.
The owner is identified as she, so use her.
It is a small hotel. Its rooms are clean.
It is a small hotel. Its rooms are clean.
The rooms are connected with the hotel: it → its.
We have a garden. Our garden is small.
We have a garden. Our garden is small.
The speaker includes themselves in the group: we → our.
They have a car. Their car is outside.
They have a car. Their car is outside.
The car belongs to people already mentioned: they → their.
2. The form depends on the possessor, not the grammatical gender of the thing
In English, use my phone, my bag, and my keys: my does not change according to the gender or number of the following noun. The same applies to the other six forms, even if possessive words change to agree with nouns in another language.
Choose his or her according to the person you are referring to, not the grammatical gender a word such as phone, bag, or sister may have in another language. If the bag belongs to someone identified as he, it is his bag; if the phone belongs to someone identified as she, it is her phone.
Your works the same when addressing one person or several. Context establishes the number of people addressed. The noun shows the number of things: your ticket or your tickets.
He is my friend. His sister lives here.
He is my friend. His sister lives here.
Sister refers to a woman, but his refers to her brother, already identified as he.
Her coat is blue. Her shoes are black.
Her coat is blue. Her shoes are black.
Whether there is one item or several, her stays the same; the noun and the agreeing verb change.
Please bring your tickets.
Please bring your tickets.
The sentence can address one person with several tickets or a whole group.
3. Position before the noun: my new book
A possessive introduces a noun phrase. A description can come between it and the noun: my new book, their small kitchen. Before the noun therefore does not necessarily mean directly beside it.
In an ordinary noun phrase, do not add a, an, or the to my, your, or the other possessive forms: my address, not the my address. The possessive already identifies whose address it is.
My needs a noun in this construction: This is my bag. If the noun is not repeated, use a different form: This is mine. Do not place mine before bag. These independent possessive pronouns are studied separately in detail.
my / your / his / her / its / our / their + (description) + noun
- noun —
- A word naming a person, thing or idea: student, book, happiness.
Our new teacher is here.
Our new teacher is here.
Our comes before the whole phrase new teacher, while new describes the teacher.
Is this your address?
Is this your address?
Your is enough before address; no additional article is needed.
This is my cup. That cup is mine.
This is my cup. That cup is mine.
My accompanies cup; mine stands for my cup. Both are correct, but they are different constructions.
4. A possessive does not always mean ownership
My name, your sister, and our school show relationships: for example, our school can be the school we attend. A possessive expresses a connection, not necessarily legal ownership. People are not someone's possessions.
Possessives are also used with body parts and personal things: my hands, her hair. Choose the form according to whose body part or object is meant: I wash my hands, you wash your hands, she washes her hands. First establish exactly whose hands are involved.
Our English class starts at six.
Our English class starts at six.
Our connects the class with its participants, including the speaker; they do not own the class.
What is your name?
What is your name?
Your refers to the person being addressed; the question asks for that person's name.
I wash my hands before lunch.
I wash my hands before lunch.
My makes clear whose hands the speaker washes; English states that relationship explicitly here.
5. Its has no apostrophe; it’s is a contraction
Its connects a noun with an object, place, or animal referred to as it: its door, its name, its tail. Possessive its has no apostrophe.
It’s means it is, and in another construction it can also mean it has. Here we practise the simple contrast with it is: It’s small is a statement about size; its small room is a noun phrase. It has in more complex tense forms is a separate topic.
To check the spelling, try expanding the contraction. Replacing It’s open with It is open works. In its door, replacing its with it is destroys the intended noun phrase.
It’s a café. Its name is Green Cup.
It’s a café. Its name is Green Cup.
First, it is introduces the place; then its connects name with that café.
The bird is small. Its wings are blue.
The bird is small. Its wings are blue.
The animal is described neutrally here; its does not change because wings is plural.
6. Their, they’re, and there: understand the meaning, check the spelling
Their expresses a connection with they and precedes a noun phrase: their room. They’re contracts they are: They’re ready. There can indicate a place: The room is there. It also appears in there is / there are, but those constructions are practised separately.
These words often sound the same. Sound alone cannot select the right spelling: you need meaning and sentence structure. In their new room, their is followed by a noun phrase; in they’re in the room, they are is followed by information about where people are.
Their bags are there. They’re ready.
Their bags are there. They’re ready.
Their identifies whose bags they are; there identifies the place; they’re describes the people.
They’re in their room.
They’re in their room.
The first word expands to they are; the second connects room with those people.
7. In conversation, track who is speaking and about whom
The same name or object can be my for its owner and your for the person speaking to them. We answer What is your name? with My name is… because we now speak from our own perspective. Our includes the speaker in the group; their usually refers to another group already clear from context.
Do not decide on he or she solely from a name, profession, or possession. Learning tasks establish the relevant person through context. Their can also refer to one person, for example when their gender is unknown: Someone left their bag. This is not a plural-agreement error.
An animal can be referred to neutrally as it / its, while a familiar pet can be he / his or she / her. Keep the established reference clear and consistent; do not treat its as the only possible form for every animal.
Before answering, make three quick checks: who or what the noun is connected with, who is speaking now, and whether a noun follows the possessive. This lesson targets neutral standard written English. Dialect forms are not the models for these exercises.
A: Is this your seat? B: Yes, this is my seat.
A: Is this your seat? B: Yes, this is my seat.
Your and my refer to the same seat from different speakers' perspectives.
Someone left their phone here.
Someone left their phone here.
This refers to one unknown person; their does not necessarily mean several owners.
This is my cat. She loves her bed.
This is my cat. She loves her bed.
Since the pet has already been identified as she, her is a natural continuation.
Common mistakes
Incorrect:Me address is on the form.
Correct:My address is on the form.
Neutral standard written English needs my before address. Me is an object form; dialectal me in place of my is not the target of this lesson.
Incorrect:She has a brother. His name is on his form.
Correct:She has a brother. Her name is on her form.
If the intended meaning is that this woman's own name is on her form, use her name and her form. The original sentence is grammatical, but refers to the brother and changes the meaning; do not choose his according to the grammatical gender of the word for form in another language.
Incorrect:Ours tickets are ready.
Correct:Our tickets are ready.
Our does not gain -s before plural tickets. Ours can stand for a whole noun phrase, but cannot introduce tickets.
Incorrect:This is the my desk.
Correct:This is my desk.
In this ordinary noun phrase, my already identifies desk, so the is unnecessary.
Incorrect:This is mine new phone.
Correct:This is my new phone.
The noun phone remains, so use my. The description new can appear between my and phone.
Incorrect:The hotel is small. It's rooms are clean.
Correct:The hotel is small. Its rooms are clean.
The rooms belong to the hotel. Its is the possessive without an apostrophe; it is rooms does not have the intended structure.
Incorrect:There coats are on the chair.
Correct:Their coats are on the chair.
To refer to the coats belonging to them, put their before coats. There indicates a location or belongs to a different construction.
Incorrect:Their in the kitchen.
Correct:They’re in the kitchen.
The sentence states where they are, so it needs the subject and verb they are. Their alone cannot replace them.
Sources
- British Council — Possessives: adjectives
- Oxford Learner’s Dictionaries — Possessive adjectives
- British Council — Personal pronouns
- British Council — Possessives: pronouns (the distinction from my + noun)
- British Council LearnEnglish Teens — Personal pronouns and possessives (singular their and animals)
- Cambridge Dictionary, About Words — There, their and they’re