Question

finish each rule for forming the plurals of nouns. (2 points each activity) (17) most nouns are made plural by adding ____________. (18) when a noun ends in \s,\ \x,\ \sh,\ or \ch,\ we add __________ to make it __________. (19) when a noun ends in a consonant and \y,\ we change the __________ to __________ and add __________ to form the plural. (20) when a noun ends in a vowel and \y,\ we add __________ to form the plural. (21) when a noun ends with a vowel and \o,\ we add __________ to form the plural. (22) when a noun ends with a consonant and \o,\ we usually add __________ to form the plural. (23) when a noun ends with \f\ or \fe,\ we usually change the __________ to \v\ and add __________ to form the plural. (24) some nouns change __________ to form the plural. (25) some nouns are the __________ in the singular and the plural. (26) some nouns from another __________ have ____________ acceptable plural spellings.

Explanation:

This problem is about English noun pluralization rules, which falls under Linguistics (a subfield of Arts). We'll answer each blank based on standard English grammar rules for plural nouns.

(17)

Most common nouns form plurals by adding "s". For example, "book" → "books", "cat" → "cats".

(18)

Nouns ending in "s", "x", "sh", or "ch" need "es" to form plurals. E.g., "box" → "boxes", "wish" → "wishes", "church" → "churches". So we add "es" to make it "plural".

(19)

When a noun ends with a consonant + "y", we change "y" to "i" and add "es". E.g., "baby" (consonant "b" + "y") → "babies" (change "y" to "i", add "es").

(20)

Nouns ending in a vowel + "y" (like "boy", "toy") just add "s" for plural. So "boy" → "boys", "toy" → "toys".

(21)

Nouns ending in vowel + "o" (e.g., "zoo", "radio") add "s". "Zoo" → "zoos", "radio" → "radios".

(22)

Nouns ending in consonant + "o" (e.g., "potato", "tomato") usually add "es". "Potato" → "potatoes", "tomato" → "tomatoes" (though some exceptions like "piano" → "pianos" exist, but the rule is "es" for most consonant + "o" endings).

(23)

Nouns ending in "f" or "fe" (e.g., "leaf", "knife") change "f" or "fe" to "v" and add "es". "Leaf" → "leaves" (change "f" to "v", add "es"), "knife" → "knives" (change "fe" to "v", add "es").

(24)

Some nouns change their "internal spelling" (irregular plurals) to form plurals. E.g., "foot" → "feet", "mouse" → "mice", "tooth" → "teeth".

(25)

Some nouns are the "same" in singular and plural. E.g., "deer", "sheep", "fish" (in some usages). "One deer", "two deer"; "one sheep", "two sheep".

(26)

Some nouns from another "language" (like Latin, Greek) have "special" plural spellings. E.g., "cactus" (Latin) → "cacti", "phenomenon" (Greek) → "phenomena".

Answer:

(17) Most nouns are made plural by adding $\boldsymbol{"s"}$.
(18) When a noun ends in "s," "x," "sh," or "ch," we add $\boldsymbol{"es"}$ to make it $\boldsymbol{\text{plural}}$.
(19) When a noun ends in a consonant and "y," we change the $\boldsymbol{"y"}$ to $\boldsymbol{"i"}$ and add $\boldsymbol{"es"}$ to form the plural.
(20) When a noun ends in a vowel and "y," we add $\boldsymbol{"s"}$ to form the plural.
(21) When a noun ends with a vowel and "o," we add $\boldsymbol{"s"}$ to form the plural.
(22) When a noun ends with a consonant and "o," we usually add $\boldsymbol{"es"}$ to form the plural.
(23) When a noun ends with "f" or "fe," we usually change the $\boldsymbol{"f" \text{ or } "fe"}$ to "v" and add $\boldsymbol{"es"}$ to form the plural.
(24) Some nouns change $\boldsymbol{\text{their internal spelling (or "their form")}}$ to form the plural. (Alternative: "their spelling", "their letters" – the key is irregular change)
(25) Some nouns are the $\boldsymbol{\text{same}}$ in the singular and the plural.
(26) Some nouns from another $\boldsymbol{\text{language}}$ have $\boldsymbol{\text{special}}$ (or "unique", "different") acceptable plural spellings.

(Note: For (24), common answers include "their spelling", "their form", or specific examples of irregular changes. The exact phrasing may vary slightly based on textbook conventions, but the core idea of irregular plural change is consistent.)