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Plural Rules Quiz

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Date: 

Instructions: From regular plurals to the trickiest irregular forms, how well do you know English plural rules?

  1. 1.

    What is the correct plural of 'cactus'?

    A
    Cacti
    B
    Both A and B are accepted
    C
    Cactuses
    D
    Cactus
  2. 2.

    What is the plural of 'child'?

    A
    Childs
    B
    Childrens
    C
    Childes
    D
    Children
  3. 3.

    What is the correct plural of 'criterion'?

    A
    Criterias
    B
    Criteria
    C
    Criteriums
    D
    Criterions
  4. 4.

    Which word has the same singular and plural form?

    A
    Horse
    B
    Dog
    C
    Cat
    D
    Sheep
  5. 5.

    What is the plural of 'mother-in-law'?

    A
    Mother-in-lawes
    B
    Mother-in-laws
    C
    Mothers-in-law
    D
    Mothers-in-laws
  6. 6.

    What is the correct plural of 'tomato'?

    A
    Tomatoe
    B
    Tomatoss
    C
    Tomatoes
    D
    Tomatos
  7. 7.

    What is the plural of 'goose'?

    A
    Gooses
    B
    Goosies
    C
    Geese
    D
    Gice
  8. 8.

    Which plural is correct for 'phenomenon'?

    A
    Phenomenies
    B
    Phenomenons
    C
    Phenomena
    D
    Phenomenas
  9. 9.

    What is the plural of 'roof'?

    A
    Roves
    B
    Rooves
    C
    Roofs
    D
    Roofes
  10. 10.

    How do you make words ending in '-f' or '-fe' plural (like 'knife')?

    A
    Add -s (knifes)
    B
    It varies by word
    C
    Add -es (knifees)
    D
    Change -f to -ves (knives)
  11. 11.

    What is the correct plural of 'octopus'?

    A
    All three are accepted
    B
    Octopodes
    C
    Octopuses
    D
    Octopi
  12. 12.

    What is the plural of 'analysis'?

    A
    Analysises
    B
    Analyses
    C
    Analysies
    D
    Analysi
  13. 13.

    Which word does NOT follow the regular '-s' plural rule?

    A
    Book
    B
    Table
    C
    Mouse
    D
    Chair
  14. 14.

    What is the plural of 'alumnus' (a male graduate)?

    A
    Alumnies
    B
    Alumnuses
    C
    Alumni
    D
    Alumna
  15. 15.

    How do you pluralize words ending in '-y' preceded by a consonant (like 'baby')?

    A
    Change -y to -ies (babies)
    B
    Add -es (babyes)
    C
    Drop -y and add -s (babs)
    D
    Add -s (babys)

Answer Key

Question 1
B. Both A and B are accepted
Question 2
D. Children
Question 3
B. Criteria
Question 4
D. Sheep
Question 5
C. Mothers-in-law
Question 6
C. Tomatoes
Question 7
C. Geese
Question 8
C. Phenomena
Question 9
C. Roofs
Question 10
B. It varies by word
Question 11
A. All three are accepted
Question 12
B. Analyses
Question 13
C. Mouse
Question 14
C. Alumni
Question 15
A. Change -y to -ies (babies)

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