How does the plural of a word ending in o change?

The plural form of nouns ending with O is 1. The plural form of nouns ending with O refers to the people and crops, and the others, such as Negro Negroes hero tomato potato potatoes and the following words

How to pluralize a word with y at the end

Before y is a vowel, directly add s boy --- boys key --- keys
Before y is a consonant, it becomes I plus es: Story -- stories

What is the rule of plural form of words?
Different words end with different plural forms, so different letters should be added. What's the rule?

Rules of plural form of words
What's the rule for different endings and different letters?

English words from grade one to grade six can be divided into noun, verb, adjective, adverb, numeral, pronoun, preposition and conjunction
Please!

In fact, you don't have to divide. Learning English is used in sentences. A word may have three or six parts of speech

The difference between beside to and next to
There is a difference between the usage of beside to and next to

I keep a dictionary beside / next to me while I am reading a newspaper

Classification of English vocabulary, such as pronouns, nouns, verbs, adjectives, adverbs, auxiliary verbs, prepositions, definite articles, etc
Hope to give me all kinds of English abbreviations, such as vt.n. and so on, and mark the Chinese meaning after the abbreviation,

Pronoun n noun V verb adj adjective adv adverb prep preposition definite article has no abbreviation, is the

What's the difference between next to and beside

Next to is the next object
What object is beside

How to distinguish verbs, adjectives, adverbs and prepositions in Chinese
How to distinguish, not how to use~

Adverbs modify verbs
Adjectives modify nouns
Generally, adverbs are placed after verbs and adjectives are placed in front of names

How does the plural of a word ending in o change?