10 Common Grammar Myths Debunked

You hand in a story you're proud of. The teacher likes it, but in the margin they've written "Never start a sentence with and." Then you open a novel and the first line is: "And then everything changed."

So are the writers breaking the rules, or has someone been scaring you with rules that don't really hold up? A lot of what people call "grammar rules" are actually half-truths, old-fashioned preferences, or tips that only apply in specific situations. Treat them as absolute laws and they make your writing stiff and make you nervous for no good reason.

A grammar myth is a "rule" people repeat as if it's always true, even though it doesn't match how good writers use English, or it only matters in very formal writing, or it was never a rule at all. Nobody's born knowing which rules are real — most of us picked up whatever the strictest teacher we met once shouted about. Here are ten of the biggest.

The ten myths

1. "Never start a sentence with and or but." You absolutely can: And then the lights went out. But nobody believed her. Open almost any novel and you'll see it — it's a normal way to link ideas and control rhythm. The fair version of this advice is: don't start every sentence that way. It's not a ban.

2. "Never split an infinitive." The infinitive is the basic verb form (to go, to see); splitting it means putting an adverb in the middle (to boldly go). This myth comes from making English behave like Latin, where infinitives are a single word. In English it's fine, and sometimes clearer: She decided to gradually get rid of her old clothes beats the awkward alternatives.

3. "Never end a sentence with a preposition." A preposition is a little word like to, in, with, for. The myth says To whom are you talking? rather than Who are you talking to? — but the "correct" version sounds stiff and old-fashioned. That's the friend I was talking about is completely natural. Don't twist a sentence just to avoid a perfectly good ending.

4. "Contractions are wrong." Short forms like don't, I'm, we're aren't wrong — they're just more informal, and part of Standard English. In stories, letters and most emails they sound natural. You might write them out in full in a very formal exam answer, but that's a style choice, not a grammar rule.

5. "You can't use they for one person." You use singular they all the time: Someone left their bag in the classroom. When you don't know the gender, they/them/their is the most natural choice — people have said it for centuries. It's also what many now prefer as their personal pronoun (Sam forgot their keys). Most exam boards accept it as Standard.

6. "I is always more correct than me." Adults rightly fix Me and Jake are going to Jake and I are going — but some over-correct into The teacher gave the books to Jake and I, which is wrong. Use I for the subject and me for the object. The test: drop the other name. I went (right), so Jake and I went; The teacher called me (right), so called Jake and me. I isn't "posher" — the two have different jobs.

7. "Long words and complex sentences make writing better." Writing is good when it's clear. We utilised the apparatus in order to facilitate the experiment is worse than We used the equipment to carry out the experiment. A precise word (furious for very angry) helps; a swollen, tangled sentence doesn't impress anyone.

8. "Passive voice is always bad." In the passive, the object comes first: Ben was bitten by the dog (active: The dog bit Ben). Overusing it is dull, but sometimes it's exactly right — when you don't know who did it (The window was broken) or the doer doesn't matter (The papers will be collected at 3 p.m.). Use active by default, passive on purpose. Watch for it dodging blame, though: Mistakes were made quietly hides by whom.

9. "You should never repeat a word." What teachers really mean is: don't repeat unnecessarily. Forced variety is worse: I saw a dog. The canine was friendly. The animal wagged its tail is clumsy — just say dog. And deliberate repetition can be powerful: We will not give up. We will not back down. That's emphasis, not laziness.

10. "Texting is ruining your grammar." Texting uses slang and shortcuts (u, lol, brb) — that's a casual register, not "bad grammar." Flipping between brb lol and I'll return shortly is called code-switching, a sign your language toolkit is large. Most young people switch to Standard English fine when they need to. The real skill is knowing which style fits which situation.

Common Mistake: Believing that because you've heard a rule loudly and often — especially from an adult — it must be true in every situation. Volume doesn't equal correctness.

When these myths still matter a little

Here's the grown-up bit: some of these do still matter in specific situations — not because they're "true grammar," but because exams and teachers have expectations.

• In a science report, However, the results were inconclusive may suit better than But… — starting with and/but can sound chatty. In an argumentative English essay, that same But can land like a drumbeat, signalling a turn in your argument.
• In very formal writing, fewer contractions and fewer sentence-final prepositions can read as more polished — but don't create twisted sentences to avoid them.
• If a teacher marks you down once for don't in an essay, don't panic. File it under "this teacher prefers a more formal style" and adjust for that class.

The lesson isn't to obey every shouted rule — it's to know both sides: what careful writers actually do, and what your particular teacher or exam prefers.

Pro-Tip: When someone insists on a myth, ask three quiet questions: Does this match what good writers actually do? Does it help clarity? Or is it just someone's taste and tradition?

UK vs US Usage

For these ten myths, UK and US English mostly agree: writers on both sides start sentences with And/But, split infinitives, end with prepositions, use contractions, and increasingly accept singular they. The differences are spelling, not grammar (colour [US: color], organise [US: organize]). Some US teachers are stricter about contractions in essays; some UK teachers about I/me — but those are personal preferences, not universal laws.

Quick check

1. Which is best for clear, modern English? a) To boldly go where no one has gone before. b) To go boldly… c) Boldly to go…

2. In which sentence is me correct? a) Me and Jake went to the shop. b) The teacher told Jake and me to hurry. c) The teacher told Jake and I to hurry.

3. Rewrite in clear Standard English: Someone left his or her pencil case in the lab. He or she can collect it later.

4. True or false: in a modern exam you automatically lose marks for starting a sentence with But.

5. Spot one myth: We must never end sentences with prepositions, and texting is destroying the English language.

Where next

• What Is Grammar? — a deeper look at what grammar really is, beyond scary rules.
• Standard English, Dialects, and 'Correctness' — more on code-switching, formality, and why "correct" can mean different things.