APIEAge Expressions: Describing Age and Groups
Early childhood development
Answers and an explanation for each question appear once you add this activity to your own library.
👶 Age Expressions
Master how to describe exact ages, life stages, age groups, and young children in English naturally.
How to use this lesson
👩🏫 For Teachers
Set aside 12 minutes for this core grammar module. Guide learners to study the four rules in the table carefully before completing the 12 exercises, checking answers as they progress.
🧑🎓 For Learners
First, read the rule table and pay special attention to the underlined age phrases in each example. Next, complete the 12 practice exercises below to test your understanding step-by-step.
Early Childhood Development
When talking about babies, toddlers, and young parents, choosing the correct age expression ensures clear communication. Learn how to describe exact ages, rough life stages, and age limits with precision.
📐 Grammar Rules: Describing Age
Study these four essential age structures. Underlined phrases show the pattern in topic context.
Put aged + a number right after a noun when you want to show an exact age or a specific range. You do not add the words 'years old' after the number.
🔹 Example 1: This playgroup welcomes toddlers aged two to four.
🔹 Example 2: The nurse rocks the infant in the cradle, caring for babies aged under one.
🔹 Example 3: Parking is free for drivers aged sixty-five and over. → aged sixty-five and over
Use in his, her, or their with early, mid, or late and a plural decade to describe a rough period of life. Match the possessive pronoun to the person, and never use 'the' instead of the pronoun.
🔹 Example 1: The teacher in her early thirties loves to teach simple nursery rhymes.
🔹 Example 2: Parents in their late twenties often listen happily as their babies babble.
🔹 Example 3: My neighbour is in her mid-fifties. → in her mid-fifties
Use the under- or over- followed by a number and an s to describe an entire group of people below or above an age limit. Always write the hyphen and remember that the under-5s means children who are four years old and younger.
🔹 Example 1: The safe play area is designed for the under-threes who often have sudden tantrums.
🔹 Example 2: Playgroup staff show the over-fives how to imitate simple motor actions.
🔹 Example 3: Tickets are cheaper for the over-60s. → the over-60s
Use a number-year-old with hyphens before a noun or as a noun by itself. The word 'year' always stays singular here, so you must never write an 's' on 'year'.
🔹 Example 1: A two-year-old toddler may wobble when taking her first steps away from the cradle.
🔹 Example 2: She carefully pushes a four-year-old in the double stroller.
🔹 Example 3: The shop sells books for a ten-year-old. → a ten-year-old
🔍 Quick Comparison: Why This Works
✅ Correct Forms
- • a three-year-old child (singular 'year' + hyphens)
- • in her mid-thirties (possessive pronoun)
- • children aged four (no 'years old' after number)
- • the under-fives (hyphenated + plural 's')
⚠️ Avoid Common Errors
- • a three-years-old child
- • in the thirties
- • children aged four years old
- • the under 5
📌 Pattern in Action: "Children aged between two and five learn to talk at an amazing speed."
✍️ Practice Exercises (12 Items)
Complete each question. Every item tests a specific context based on the four rules.
Part 1: Choose the correct sentence
1. Choose the sentence that correctly expresses exact age for children entering nursery. (exact)
Select the grammatically correct option below:
2. Choose the sentence that correctly describes the teacher's approximate age. (decade)
Select the grammatically correct option below:
3. Choose the correct sentence describing a child in a stroller. (hyphen)
Select the grammatically correct option below:
Part 2: Rewrite the sentence
4. Rewrite the sentence using the over- + number + s: (group)
Original: "Children who are older than 5 imitate words quickly."
____ (Type your rewritten sentence here...)5. Rewrite the sentence using aged + number: (after-noun)
Original: "Infants who are 1 to 2 years old sleep peacefully in a cradle."
____ (Type your rewritten sentence here...)6. Rewrite the sentence using a number-year-old: (singular)
Original: "A toddler who is three years old had a tantrum at the park."
____ (Type your rewritten sentence here...)Part 3: Fill in the missing words
7. Fill in the missing word: (period)
"The mother in ____ mid-twenties pushes the stroller through the playground."
8. Fill in the missing group age expression (meaning children below three): (plural-s)
"This playgroup activity is best designed for ____."
9. Fill in the missing word: (exact-age)
"Children ____ four to six enjoy learning simple nursery rhymes."
Part 4: Correct the error in the message
10. Read the text message to a friend and correct the highlighted error: (no-s)
Write the corrected phrase below:
____ (Type corrected phrase (e.g. two-year-old)...)11. Read the text message to a friend and correct the highlighted error: (pronoun)
Write the corrected phrase replacing the highlighted part:
____ (Type corrected phrase (e.g. in her late twenties)...)12. Read the text message to a friend and correct the highlighted error: (dash)
Write the corrected age expression below:
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