In English, thereis is a grammar rule: when the subject is the "third person singular", the verbs in the sentences should add an S to the end of them.

For example, "he hits me" and "she smiles at him"."

What is the meaning of itdoes it mean?

I have checked online for this question online many times, but no one can give an ideal answer.

I once asked some native English speakers, and they were like, "we a're used to it", "say," "adding an S is not that difficult" or "if I don't say the S, I often feel something wrong".it sounds funny."

My point of view is,opinion is that this grammar rule doesn't have any practical meaning whatsoever and it will be dropped sooner or later.

In English, there is a grammar rule: when the subject is the "third person singular", the verbs in the sentences should add an San ¶
"s" should be added to the end of them verb.

I think it's better to use passive form
And you should use " " for s.

I once asked some native English speakers, they were like "we are used to it", "saying a S is not that difficult" or "if I don't say the S, I often feel like something is wrong".

In English, there is a grammar rule: when the subject is the "third person singular", the verbs in the sentences should add an S"s" to the end of them.

When referring to a literal thing you are adding, it's common to write it exactly as it usually appears and put it in double quotes. S would be understood, but it was unexpected, "s" tells you exactly what it is and nothing more.

I have checked this question online many times, but no one can give an ideal answer.

"I have asked this question" or "I have checked this issue" are more correct. Technically, you don't check a question, instead you check something that exists, such as the result of asking a question. You could also "check for this question" if you're just seeing if the question has been asked, without specifying you're looking for the answer.

I once asked some native English speakers, and they were like "we are used to it", "saying a S is not that difficult" or "if I don't say the S, I often feel something wrong".

You want a conjunction here, because "they were like ..." is a fully separate clause. Without "and" or something similar, it feels strange, or like it's speech (which would be quoted). Instead of a conjunction you could use a semi colon (;) as well.

My point of view is, this grammar rule doesn't have any practical meaning and it will be dropped soon or later.

"My point of view is that this grammar rule..." or "My point of view: this grammar rule ..." or just "My point of view is this grammar rule ...". The comma here would make sense in speech to indicate a pause, but in writing it ungrammatical.

A Grammar Rules

In English, there is a grammar rule: when the subject is the "third person singular", the verbs in the sentences should add an S to the end of themsuffix.

Why is theredoes this grammar rule exist?

I once asked some native English speakers, and they were like "we are used to it", "saying an S is not that difficult" or "if I don't say the S, I often feel like something’s wrong".

My point of view isIn my opinion, this grammar rule doesn't have any practical meaning and it will be dropped sooner or later.