On the question of adding or not adding "s" in English sentences and the form of "third order"

1, when the verb becomes singular in the third person, add s:

(1) Most verbs are pronounced [s] after voiced consonants and [z] after voiced consonants and vowels.

(2) If the consonant letter ends with "Y", the word "Y" should be changed to "I" first, and then the word "es" should be read as [iz].

(3) If it ends with "s, x, ch, sh", add "es" at the end of the word and pronounce it [iz].

(4) Add "es" after the verb ending in "o" and read it as [z].

2. When a noun becomes plural, an s should be added to the suffix:

(1) Add -s directly.

(2) add es ending in s, x, ch, sh, sh.

(3) If the consonant letter +y ends, change Y to I and add es.

(4) For words ending in F or fe, change F to V and add es.

(5) Words ending in O are animate +es and inanimate+s.

Irregular changes of nouns into plural numbers in extended data;

1, children, children, feet, teeth, rats, rats, men.

2. Monomorph: deer, sheep, fish, China, China, Japan.

First of all, children

Pronunciation: English [? tldr？ N] beauty [? tldr？ n]？

Example:

Me? Really? Answer? Wife? And then what? Two? Small? Kid.

I have a wife and two young children.

Second, the foot.

Pronunciation: English [fi? T] beauty [fi? t]？

Example:

That? Knife? Stuck? Are you online? That? Ground? Where is it? His? Feet. ?

The knife stuck to the ground at his feet.

Third, teeth.

Pronunciation: English [ti? θ] beauty [ti? θ]?

Example:

Really? What about you? Brush it? Yours Teeth (plural of tooth)

Did you brush your teeth?

Fourth, deer

Pronunciation: English [d(r)] America [d? r]？

Example:

That? Deer? Fell? Answer? Prey? Where to? That? Lions. ?

The deer was preyed on by a lion.

Five sheep

Pronunciation: English [? Me? P] beauty [? Me? p]？

Example:

They? Keep? Answer? Small? Sheep? Yes? Sheep.

They keep a small flock of sheep.