GIVE ANSWERS - English

Grammar is the set of "agreed" "rules" about how we order and change words in sentences and phrases to create meaning.

"Agreed" - that some sort of consensus is reached, such as "everyone in the village does it like that, so I will also" or "Oxford and Cambridge Universities use English grammar in this way, therefore everyone else must/does".

"rules" - the way or etiquette that is applied consistently to how you change or modify words or word order. For example, you don't say/write "they comes", you say "they come". This applies all the time when you want to express in the simple present (another rule set, I know!) they + "to come".

The whole idea of "agreed" "rules" is to make things as easy as far as possible to understand without ambiguity. If you have the simple sentence "they comes" - "incorrect grammar" - does the person according to the etiquette mean "he comes" or "they come"?

Sticking to the "agreed" "rules" means that there is much less room for misunderstanding - this is why we have grammar in the first place and why it is so important to get it right when you are learning a language.