Two dogs or two dogs, which is correct? - briefly
The correct phrase is "two dogs." The word "dogs" is already plural, so there is no need to add an "s" to the number "two." This is a common grammatical rule in English where the noun following a numerical adjective remains in its plural form without additional modification.
Two dogs or two dogs, which is correct? - in detail
The correct phrase between "two dogs" and "two dogs" is a matter of understanding the grammatical rules governing countable nouns and their modifiers in English. The phrase "two dogs" is the grammatically correct form. This is because "two" is a quantifier that specifies the exact number of countable nouns that follow it. In English, when specifying a quantity of countable items, the noun that follows the quantifier remains in its base form, without any pluralization.
To elaborate, countable nouns in English can be singular or plural. When a quantifier like "two" precedes a countable noun, the noun remains singular. For example, "one dog," "two dogs," "three dogs," and so on. The quantifier "two" indicates that there are two individual dogs, and the noun "dog" does not change to "dogs" because the quantifier already specifies the number.
It is essential to recognize that this rule applies to all countable nouns, not just "dogs." For instance, one would say "two cats," "two books," "two cars," and so forth. The noun following the quantifier remains in its base form, and the quantifier provides the necessary information about the quantity.
In summary, the correct phrase is "two dogs." The noun "dog" does not change to "dogs" because the quantifier "two" already specifies the number of dogs being referred to. This grammatical rule is fundamental in English and ensures clarity and precision in communication.