This noun follows the standard English plural rule: simply add -s to the singular form.
Contain is regular. It follows the Standard -s rule.
Use plural verbs: "The contains are ready" (not "is ready").
Yes. The plural contains is standard across all English variants.
The word contain follows the standard English pluralization rule. When forming the plural, contain becomes contains. This follows the Standard -s pattern, which is one of the most common plural rules in English.
Understanding why contain becomes contains helps with spelling and pronunciation. This noun follows the standard English plural rule: simply add -s to the singular form.
When using contains in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The contains are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.