When do English words ending in O add S and es as plural?

Generally, es should be added to the plural form of nouns ending in o, but if there is a vowel or foreign word before o, only s should be added to the abbreviation ending in o. ..

Such as: tomato-tomato, hero-hero; ; Photo-photo, radio-radio, piano-piano.

The plural form of nouns ending in O usually adds -es.

For example: heroes, tomatoes, potatoes, blacks, wild dogs.

There are also some nouns that can be added with the plural form of -es or-s. They are: Zero Zero, Buffalo Buffalo, Eskimo, Volcano.

English plural related suffix

Constitute noun plural

-s is the most common noun plural suffix, such as:

Computer-computer

Some nouns ending in -s are not variants of singular forms, but independent forms, such as news, shorts, summons, bills, works and trousers. Verbs can be singular or plural, depending on the specific situation of words.

These words usually come from the plural form -s, but the summons comes from the French negative past participle sumunse.

Constitute noun plural

Some nouns are plural with -es, such as box-box.

Similar to -s, some nouns ending in -s are not variants of singular forms, but independent forms, such as clothes.

[Ancient names or Latin modern names of animals and plants]

Some plural forms of words ending in -um or -on end in-a.

It is worth mentioning that data is the plural of datum in etymology, but it can be used independently.

[plural of nouns from Latin ending in -us]

The plural forms of some words ending in -us or -e or -o end in-i.