What Are Age Sentences in English?
In English, we use the verb to be to talk about age. This is different from many other languages. We never say — I have 25 years. Instead, we say — I am 25 years old. Simple. Direct. The verb am, is, or are connects the person to their age. Every time. No exceptions at the A1 level.
Age sentences are fundamental when talking about family members. You will use them constantly — introducing your parents, describing your siblings, or answering questions about relatives. The structure is straightforward: Subject + am/is/are + number + years old. Master this pattern and you can describe every person in your family with confidence. The phrase years old completes the sentence, though native speakers sometimes drop it in casual speech.
Why Learn This?
By the end of this lesson, you will be able to:
- State your own age clearly using I am + number + years old
- Describe the age of family members using he is, she is, and they are
- Ask someone their age politely with How old are you?
- Ask about a third person's age using How old is he/she?
- Use age vocabulary naturally in short family introductions
- Understand and respond when someone tells you their age in conversation
Essential Vocabulary
old - A word used with numbers to express age — five years old, thirty years old
years - The unit of time used when stating age in English
age - How old a person or thing is — What is your age?
How old - The question phrase used to ask about someone's age
young - Not old; at an early stage of life — My sister is very young.
adult - A fully grown person, usually 18 years or older
baby - A very young child, usually under one or two years old
teenager - A person between 13 and 19 years old
middle-aged - Describes a person roughly between 40 and 60 years old
elderly - A respectful word for people who are quite old, usually over 70
Pronunciation Guide
years old - /jɪərz oʊld/ - These two words flow together. Say them as one smooth unit.
How old - /haʊ oʊld/ - Stress on old. The question rises slightly at the end.
I am - /aɪ æm/ - In fast speech, often reduced to I'm — /aɪm/
He is - /hiː ɪz/ - Usually contracted to He's — /hiːz/
She is - /ʃiː ɪz/ - Usually contracted to She's — /ʃiːz/
They are - /ðeɪ ɑːr/ - Contracted to They're — /ðɛr/
thirty - /ˈθɜːr.ti/ - The th sound requires the tongue touching the upper teeth
elderly - /ˈel.dər.li/ - Three syllables. Stress on the first: EL-der-ly
Grammar Structure
Core Rule: English uses the verb to be for age. NOT the verb have.
Positive Sentences:
- I am 25 years old.
- My brother is 14 years old.
- My parents are 50 years old.
Question Form:
- How old are you?
- How old is your mother?
- How old are your grandparents?
Short Answers:
- — How old are you? — I'm 28. / I'm 28 years old.
- — How old is he? — He's 45.
Important Note: Years old can be omitted in short answers. Both — I'm 28 — and — I'm 28 years old — are completely correct.
When To Use
Introducing Your Family
- When describing relatives to a new friend or colleague
- When filling out a family profile or school project
- When telling someone about your parents, siblings, or grandparents
Asking About Someone's Age
- When meeting a child and wanting to know how old they are
- When a doctor or teacher asks for a family member's age
- When your friend talks about their sibling and you are curious
Formal and Informal Contexts
- At school: — How old is your brother? — He's 16.
- At a clinic: — My mother is 62 years old.
- With friends: — My grandma? She's 78! Can you believe it?
Written Contexts
- Writing a short paragraph about your family for a homework assignment
- Completing a form that asks for ages of family members
Example Sentences
- — I am 22 years old.
- — My mother is 48 years old.
- — My father is 51 years old.
- — My little sister is 9 years old.
- — My brother is 17 years old. He is a teenager.
- — My grandmother is 74 years old. She is elderly.
- — My grandfather is 76 years old.
- — How old are you? — I'm 30.
- — How old is your baby? — She's 1 year old.
- — My parents are both 55 years old. They are twins — in age!
- — Our dog is 7 years old. That is 49 in dog years!
- — My aunt is 39 years old and my uncle is 42 years old.
Mini Dialogues
Lena: — Do you have brothers or sisters?
Tom: — Yes! I have one brother and one sister.
Lena: — How old are they?
Tom: — My brother is 19 years old and my sister is 12 years old.
Lena: — Oh, your sister is young! And your brother is almost an adult.
Tom: — Yes, exactly! He starts university next year.
Neighbor: — Hello, Maya! How old are you now?
Maya: — I am 8 years old!
Neighbor: — Wonderful! And how old is your baby brother?
Maya: — He is 1 year old. He is very small.
Neighbor: — How lovely. Your parents must be busy!
Sofia: — Are your grandparents here tonight?
David: — Yes! My grandfather is 80 years old and my grandmother is 77.
Sofia: — Wow, 80! He looks very healthy.
David: — He is! He walks every morning. How old are your grandparents?
Sofia: — My grandmother is 68. My grandfather is not alive anymore.
David: — I am sorry to hear that.
Teacher: — Can you tell us about your family, Ali?
Ali: — Yes. My mother is 44 years old and my father is 47 years old.
Teacher: — Do you have any siblings?
Ali: — I have one sister. She is 16 years old.
Teacher: — Excellent! Thank you, Ali.
Correct vs. Incorrect Usage
Practical Tips
- Remember the verb swap. In Turkish you say — Benim 25 yaşım var — which literally means — I have 25 years. In English, drop have entirely. Use am/is/are instead. Always.
- Use contractions naturally. Native speakers almost always say I'm, He's, She's, They're in conversation. Saying — I am 30 years old — sounds slightly formal. — I'm 30 — sounds natural and relaxed.
- One year — special rule. Only the number 1 uses the singular form. — She is 1 year old. — Every other number uses years — 2 years, 15 years, 100 years.
- Practice with your real family. Write one sentence for each family member tonight. Real names. Real ages. This activates personal memory and makes the structure stick far faster.
- Short answers are perfect. — How old are you? — I'm 22. — You do NOT need to repeat years old in every reply. Short answers sound fluent, not lazy.
- Learn the age groups as vocabulary chunks. Baby (0-2), young child (3-12), teenager (13-19), adult (20+), middle-aged (40-60), elderly (70+). These descriptive words enrich your family descriptions enormously.
Alternative Expressions
Ways to Ask About Age:
Ways to Answer an Age Question:
Talking About Age Ranges:
Cultural Notes
Asking Age Can Be Sensitive: In English-speaking cultures — particularly in the UK, USA, and Australia — asking an adult their age can sometimes feel impolite, especially with women or older people. It is perfectly natural to ask children their age. With adults, only ask when the context clearly requires it, such as at a doctor's office or on an official form.
Birthdays Are a Big Deal: English-speaking families typically celebrate birthdays with considerable enthusiasm. You will often hear phrases like — How old are you turning? — or — She's turning 40 this year! — The verb turning means reaching a new age on your birthday. It is a vibrant, commonly used expression worth recognizing early.
Age and Respect: Unlike some cultures, English does not have different verb forms or pronouns based on a person's age or status. You use the same sentence structure — How old are you? — whether speaking to a child or an elderly professor. Respect is conveyed through tone, vocabulary choice, and context rather than grammatical structure.