Lest anyone conclude that I have a general contempt for grammar or grammarians, let me clarify.
Every language has grammar and every speaker/writer uses it. All the time. You can’t get away from it.
Grammar is just the structure of a language, as opposed to the words. It’s a set of patterns you learned before you knew you were learning them, a set of patterns you unconsciously recognize and use. And without them, you would not be able to encode or decode any but the most rudimentary of utterances.
Grammar is all about pattern recognition. Knowledge of the grammatical patterns of English leads both you and your listener/reader to have certain expectations about where your words are going, and if you violate those expectations too seriously you won’t be understood. The “rules” of grammar are just an effort on the part of some well-meaning people to save us all from incoherence.
(Actually, I believe that pattern recognition makes up a large part of what we call intelligence.)
Grammar tells us what role a word is playing. It tells us how the different bits of a sentence are related to each other. There are two main ways I’m aware of for a language to “do” grammar. They are:
1) word order
2) word modification
Word order is pretty obvious. Word modification is all the various forms that are based on a single word-root (such as, write, writes, writer, writing, written, wrote, and so on.) Most languages, like English, use both approaches. Latin, I am told, relies so nearly completely on word modification that it virtually doesn’t matter how you order the words. (Try to wrap your mind around that concept!)
Anyway, I really don’t have a serious quarrel with grammarians in general. I just get a bit annoyed when I encounter someone who is so fixated on the rules that he or she loses sight of the purpose.
Grammar should be your servant, not your master.
(Grammar Police, photocredit: the_munificent_sasquatch)