Year 4 English worksheet on forming plurals with 's', 'es', and 'ies'.

To turn singular words into plurals, we usually follow these simple rules:

1. Add 's': For most words, just add an s to the end (e.g., cat → cats).
2. Add 'es': If a word ends in -ch, -sh, -s, -x, or -z, add es (e.g., box → boxes). Also, if a word ends in -o preceded by a consonant, it often takes es (e.g., potato → potatoes).
3. Change 'y' to 'ies': If a word ends in a consonant + y, drop the y and add ies (e.g., city → cities).
4. Just add 's' for vowel + y: If a word ends in a vowel (a, e, i, o, u) + y, just add s (e.g., monkey → monkeys).

Let’s go through each word one by one:

1. monkey → ends in vowel + y → add s → monkeys
2. box → ends in x → add es → boxes
3. country → ends in consonant + y → change y to ies → countries
4. potato → ends in o (consonant before) → add es → potatoes
5. apple → regular → add s → apples
6. day → ends in vowel + y → add s → days
7. book → regular → add s → books
8. cherry → ends in consonant + y → change y to ies → cherries
9. dress → ends in ss → add es → dresses
10. year → regular → add s → years
11. dish → ends in sh → add es → dishes
12. horse → regular → add s → horses
13. key → ends in vowel + y → add s → keys
14. watch → ends in ch → add es → watches
15. cow → regular → add s → cows
16. teacher → regular → add s → teachers
17. witch → ends in ch → add es → witches
18. chicken → regular → add s → chickens
19. fox → ends in x → add es → foxes
20. cat → regular → add s → cats
21. bench → ends in ch → add es → benches
22. newspaper → regular → add s → newspapers
23. cowboy → ends in vowel + y → add s → cowboys
24. rope → regular → add s → ropes
25. eye → regular → add s → eyes
26. family → ends in consonant + y → change y to ies → families
27. valley → ends in vowel + y → add s → valleys
28. journey → ends in vowel + y → add s → journeys
29. play → ends in vowel + y → add s → plays
30. read → regular → add s → reads
31. knee → regular → add s → knees
32. note → regular → add s → notes

All answers have been checked against standard English pluralization rules.

Final Answer:
1. monkeys
2. boxes
3. countries
4. potatoes
5. apples
6. days
7. books
8. cherries
9. dresses
10. years
11. dishes
12. horses
13. keys
14. watches
15. cows
16. teachers
17. witches
18. chickens
19. foxes
20. cats
21. benches
22. newspapers
23. cowboys
24. ropes
25. eyes
26. families
27. valleys
28. journeys
29. plays
30. reads
31. knees
32. notes