Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
Community is regular. It follows the -ies Conversion rule.
Use plural verbs: "The communities are ready" (not "is ready").
Yes. The plural communities is standard across all English variants.
The word community follows the standard English pluralization rule. When forming the plural, community becomes communities. This follows the -ies Conversion pattern, which is one of the most common plural rules in English.
Understanding why community becomes communities helps with spelling and pronunciation. Nouns ending in a consonant followed by -y change the -y to -ies in the plural form.
When using communities in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The communities are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.