Form and use plurals of compound nouns
Key Notes:
πΉ What are Compound Nouns?
π A compound noun is made up of two or more words that together act as a single noun.
Examples: π school bus, ποΈ mother-in-law, π runner-up
πΉ Forming Plurals of Compound Nouns
1οΈβ£ Add -s to the main word (the most important part):
- brother-in-law π brothers-in-law π¨βπ¨βπ¦
- passer-by π passers-by πΆ
2οΈβ£ Add -s to the last word (if itβs the main part):
- school bus π school buses π
- textbook π textbooks π
3οΈβ£ If the compound is written as one word:
- toothbrush π toothbrushes πͺ₯
- sunflower π sunflowers π»
4οΈβ£ If the compound noun has no main word (or is hard to identify):
- forget-me-not π forget-me-nots πΈ
- merry-go-round π merry-go-rounds π
πΉ Examples π
β
daughter-in-law π daughters-in-law π©βπ§
β
man-of-war π men-of-war β
β
keyboard π keyboards β¨οΈ
β
washing machine π washing machines π§Ί
πΉ Tips π
β¨ Always check which word carries the main meaning.
β¨ Add -s/-es only to the important part of the compound.
β¨ Memorize irregular ones (man-of-war β men-of-war).
π― Quick Practice
π Turn these into plurals:
- passer-by πΆ
- mother-in-law π©βπ©βπ¦
- textbook π
- son-in-law π¨βπ©βπ¦
- merry-go-round π
Let’s practice!βοΈ

