IRREGULAR PLURALS: Essential Grammar for IELTS, PTE & CELPIP Success
- Maher
- Dec 8, 2025
- 4 min read
Updated: Jan 31
Master irregular plurals for IELTS, PTE, and CELPIP with Master English Australia
English plurals can be tricky—especially when they don’t follow the normal rule of adding –s or –es. These forms are called irregular plurals, and they appear constantly in IELTS, PTE, and CELPIP exams. If you're preparing for any of these tests—whether in Sydney, in Australia, online, or in a face-to-face class—you’ll want to master this grammar point early to avoid easy mistakes.
At Master English Australia, we show students how small grammar details like irregular plurals can cost marks in Listening, Reading, and Writing. Once you know the patterns, you’ll feel far more confident and accurate in all three exams.
Why Irregular Plurals Matter for IELTS, PTE, and CELPIP
IELTS
Irregular plurals appear constantly in IELTS Listening Part 1. Writing child instead of children means you lose the mark. They also show up in Reading tasks such as matching, classification, and sentence completion.
PTE
PTE tests irregular plurals in:
Fill in the Blanks (Reading)
Write from Dictation
Summarise Spoken Text
In PTE, spelling matters just as much as grammar. Writing mouses instead of mice will instantly lower your score.
CELPIP
CELPIP includes irregular plurals in:
Listening Note-taking
Reading Apply a Diagram
Writing Task 1 (Email Response)
CELPIP uses everyday English, so irregular plurals often appear in daily situations, workplace messages, or community contexts. Whether you're preparing through an IELTS course Australia, a PTE course online, or a CELPIP course Sydney, knowing these forms will boost your accuracy.
Common Irregular Plurals You Must Know
1. Words that change vowels
man → men
woman → women
foot → feet
tooth → teeth
goose → geese
These appear in both IELTS Listening and PTE Dictation tasks.
2. Words that change completely
child → children
person → people
mouse → mice
IELTS and CELPIP love using children in everyday conversations and forms.
3. Words with no change
sheep → sheep
fish → fish
deer → deer
aircraft → aircraft
These are common traps, especially in PTE where spelling accuracy affects multiple skills.
4. Latin and Greek plurals
You’ll see these more in IELTS and sometimes in CELPIP Reading:
analysis → analyses
basis → bases
criterion → criteria
phenomenon → phenomena
Students in our IELTS course online learn how to spot these instantly.
Quick Practice (Inspired by Cambridge IELTS Books 9–19 & PTE/CELPIP Tasks)
Try these:
The dentist said I need two ______ removed. (tooth or teeth or tooths)
The study included several different experimental ______. (criterion or criteria)
The wildlife reserve has more than fifty ______ during winter. (deer or deers)
The team interviewed five ______ for the report. (person or persons or people)
The farmer owns many ______ on his property. (sheep or sheeps)
If any of these confused you, don’t stress—this is exactly what we teach step by step at Master English Australia.
How We Teach This in Our IELTS, PTE, and CELPIP Courses
At Master English Australia, our approach includes:
Real exam examples from IELTS, PTE, and CELPIP
Pronunciation training for tricky plural forms
Listening dictation exercises tailored to each test
Error correction and personalised feedback
Online and in-person lessons to fit your schedule
Whether you're joining an IELTS course Sydney, PTE course Australia, CELPIP course online, or a private lesson, we make sure your grammar is accurate, practical, and exam-ready.
Start Building Stronger Grammar for Your Test Today
Irregular plurals are a small detail—but in IELTS, PTE, and CELPIP, details matter. Improving your accuracy can directly increase your Listening, Reading, and Writing scores.
Additional Tips for Mastering Irregular Plurals
Understanding irregular plurals is crucial for your exam success. Here are some additional strategies to help you master them:
Create Flashcards: Use flashcards to memorize irregular plural forms. Write the singular form on one side and the plural on the other. Regular review will reinforce your memory.
Practice with Context: Try to use irregular plurals in sentences. This will help you remember them better. For example, "The children played in the park" reinforces the plural form of child.
Engage with Media: Listen to English podcasts, watch movies, or read books. Pay attention to how irregular plurals are used in context. This exposure will help solidify your understanding.
Group Study: Join a study group. Discussing irregular plurals with peers can provide new insights and reinforce learning.
Regular Quizzes: Test yourself regularly. Use online quizzes or apps that focus on grammar. This will help you track your progress and identify areas that need improvement.
By implementing these strategies, you can enhance your understanding of irregular plurals and improve your performance in the exams.
Ready to study smarter, not harder?
Join Master English Australia and prepare with teachers who know IELTS, PTE, and CELPIP inside out.
INTERNAL LINKS
LINKS
https://immi.homeaffairs.gov.au/ (English requirements)
Mastering irregular plurals is a small but crucial step toward success in exams like IELTS, PTE, and CELPIP, as these tests closely evaluate grammatical accuracy in reading, writing, listening, and speaking. Common mistakes with words like children, mice, criteria, or phenomena can easily impact scores if not practiced well. Strong grammar foundations also help students transition smoothly into academic environments abroad. For those planning higher studies, university of arizona courses emphasize academic writing, research skills, and language proficiency, making grammar accuracy even more important. Consistent practice of essentials like irregular plurals builds confidence and supports long-term academic success.