10 Common Grammar Myths Debunked

You’ve probably had that moment in front of a blank email where your brain freezes over one tiny thing.

“Can I start this with But? Is it between you and I? Am I allowed to write Someone left their laptop or is that now illegal?”

Meanwhile, you keep bumping into people — colleagues, relatives, strangers on the internet — who boom out “rules” as if they’re guarding the gates of Proper English.

Here’s the thing. A lot of what gets thrown around as “correct grammar” isn’t actually about grammar at all. It’s about taste, tradition, or something a headteacher said in 1978 that’s still echoing around.

The good news is that once you see which “rules” are myths, you can stop second‑guessing yourself and start making choices like a calm, modern adult writer.

Before you read on, here's where we're heading. By the end you'll be able to: - Recognise 10 common grammar myths that cause anxiety at work and in everyday writing.
- Explain what’s actually going on with split infinitives, sentence‑starting And, and singular they.
- Judge when to follow an old‑fashioned “rule” for the sake of the audience, and when to ignore it.
- Feel more confident writing emails, reports, and posts without a Greek chorus of imaginary grammar police.

Beginner (Foundation): Myths vs Real Rules

Let’s quickly separate two things:

• Real grammar rules: patterns that, if you break them, genuinely confuse people. (e.g. She go yesterday instead of She went yesterday.)
• Grammar myths: slogans like “Never start a sentence with and” that don’t actually match how competent speakers and writers use English.

Nobody hands you a clear list of which is which. You simply bump into angry corrections and hope for the best.

So let’s put 10 of the loudest myths on the table and give each one a plain verdict.

Myth 1: “Never start a sentence with and or but.”

Modern verdict: You can. Good writers do it all the time.

And that’s when everything went wrong.
But there’s a catch.

In conversation, we often start turns with and/but to hook onto what came before. Written English has followed suit.

The sensible advice is: don’t overuse it, especially in very formal writing. But there’s no blanket ban.

Myth 2: “Never split an infinitive.”

An infinitive is to + verb: to go, to eat, to see.

Splitting it means putting something in between:

to really understand
to quickly fix the issue

You may have been told this is “wrong”. It isn’t. Sometimes the split version is the clearest version.

Myth 3: “You must not end a sentence with a preposition.”

Prepositions are little words like to, with, at, in, for, about.

The myth says you can’t end a sentence with one:

✗ What are you looking at?
✓ At what are you looking?

The “corrected” version feels pompous and unnatural. Modern English is perfectly happy with sentence‑ending prepositions.

Myth 4: “Contractions (don’t, can’t, won’t) are wrong.”

Contractions are simply less formal. They’re standard in everyday writing:

I’m afraid we can’t meet that deadline.
Don’t worry — we’ll sort it out.

You might choose full forms (do not, cannot, will not) in a legal contract or very stiff report, but contractions themselves are not incorrect.

Myth 5: “You can’t use they for a single person.”

You absolutely can — and you already do.

Someone left their phone on the train.
Ask the caller to leave their number so I can ring them back.

When you don’t know the person’s gender, they/them/their is now the standard option. It’s also correct for people who identify as they.

Myth 6: “I is always more correct than me.”

You’ll have heard corrections like:

Me and John are going → John and I are going.

That’s fair enough in that position. But some people take it too far:

✗ The manager spoke to John and I.

In that sentence it should be me: “spoke to me” → “spoke to John and me”.

So I isn’t “posher” or inherently more correct. It just has a different job.

Myth 7: “Long words and complex sentences make you sound professional.”

If you’ve ever sat through an email like:

We are currently in the process of implementing a number of strategic initiatives…

…you’ll know that long words often hide vague thinking.

Clear, simple English usually sounds more professional than cluttered, corporate waffle.

Myth 8: “Passive voice is always bad.”

The passive voice:

The form was completed.

The active voice:

We completed the form.

The passive can be weaker, especially when people use it to dodge blame (“Mistakes were made”). But it’s not automatically wrong. Sometimes, it’s exactly what you want.

Myth 9: “You should never repeat a word.”

Trying too hard not to repeat yourself can make writing clumsy:

The client visited our office. The customer seemed pleased with the individual who greeted her.

If you mean client throughout, just use client. Your reader would rather be clear than impressed by your thesaurus.

Myth 10: “Texting and social media are ruining grammar.”

Different platforms have different styles. The shorthand you use on WhatsApp is not the same as an email to your boss — and you know that.

The real skill is switching register. The existence of “u ok?” has not broken English.

Common Mistake:
Treating anything you remember from school as an unbreakable law, even if it clearly clashes with how up‑to‑date writing actually works.

Quick recap:
- Many loud “rules” — about and/but, split infinitives, prepositions, and contractions — are myths.
- Singular they is standard when gender is unknown or non‑binary.
- I and me both have their place; one isn’t morally superior.
- Length and jargon don’t equal professionalism. Clarity does.
- Online and text styles are different registers, not signs that grammar is collapsing.

Intermediate (Development): What’s Really Going On

Now let’s take each myth and look at the useful core hidden inside it: when the advice helps, when it doesn’t, and how to adjust for work and everyday life.

1. Starting with and or but

Why the myth exists:

• Some schoolteachers use “Don’t start with and” as a way to stop children writing endless strings of “And then… And then…”.
• Old‑fashioned style guides preferred linking sentences with words like however, therefore, moreover.

In adult writing, sentence‑starting And and But are everywhere:

The figures look good. But they hide a worrying trend.
We’ve reduced costs. And we’ve improved response times.

They sound more conversational and direct. That’s often exactly what you want in emails, reports, or blog posts.

At work:

• For most business writing, using And/But at the start occasionally is fine — it often improves flow.
• In very formal documents (tenders, legal papers), you might favour However, In addition, Therefore instead, if that matches the house style.

2. Splitting infinitives

The “rule” comes from people in the 18th/19th centuries who admired Latin and tried to force English into the same shape.

Modern grammarians are relaxed. The key is clarity.

Compare:

We expect sales to steadily increase next year.
We expect sales steadily to increase next year. (odd rhythm)
We expect sales to increase steadily next year. (also fine)

Here, “to steadily increase” is natural. Nobody sensible is reaching for a red pen.

In practice:

• If splitting the infinitive makes the sentence clearer or more natural, do it.
• If you’re writing for a very conservative audience and there’s an easy alternative, you can avoid the split without harming the sentence.

3. Ending with prepositions

This “rule” is also borrowed from Latin. In English, rigidly avoiding a final preposition often creates monsters:

This is the information I was looking for. – Normal.
This is the information for which I was looking. – Technically possible, socially alarming.

Sometimes, moving the preposition can improve the sentence:

The reason for which we met → The reason we met

…but that’s about clarity, not obeying a ban.

At work:

You don’t need to twist sentences around to avoid a final to/with/for/about. Plain English organisations in the UK actually encourage the natural version.

4. Contractions

Contractions signal a human voice. That’s why they’re all over effective business communication:

I’m attaching the report — let me know if you’ve got any questions.

Versus:

I am attaching the report. Please advise if you have any questions.

The second isn’t “wrong”; it’s just more distant.

Rough guide:

• Emails, internal docs, web copy, marketing, social media: contractions are usually welcome.
• Formal reports, legal contracts, academic papers: fewer contractions, unless the house style says otherwise.

Pro‑Tip:
If you’re unsure, pick one or two paragraphs of your document and read them aloud, once with contractions and once without. Keep the version that sounds like a competent adult talking, not a robot in a suit.

5. Singular they

Two main uses:

1. Unknown gender:

If a customer forgets their password, they can reset it online.

2. Non‑binary pronouns:

Jordan said they’d send the draft by Friday.

Most modern style guides — including those used by newspapers, universities, and major companies — accept both.

If someone prefers they, then using he or she instead isn’t a grammar choice; it’s just disrespectful.

6. I vs me

Here’s the quick‑working rule you can actually remember on a busy day.

Use me when it’s receiving the action (object):

She invited John and me to the meeting.

Use I when it’s doing the verb (subject):

John and I joined the call.

Test it by removing the other person:

I joined the call. (correct)
Me joined the call. (wrong)

She invited me. (correct)
She invited I. (wrong)

So:

between you and me — correct, even if “between you and I” sounds fancier to some ears.

Hyper‑correcting to I everywhere is a way to sound wrong and pretentious in one go.

7. Long words and complex sentences

There’s a reason Plain English Campaign awards “Golden Bull” prizes for awful corporate prose.

Readers — including your boss — generally prefer:

• familiar words over jargon
• shorter sentences over sprawling ones
• concrete language over abstractions

Instead of:

We are in the process of leveraging our core competencies to optimise customer‑centric outcomes.

Try:

We’re using our main strengths to give customers better results.

Which one would you rather read on a Friday afternoon?

8. Passive voice

The passive isn’t evil; it just has a particular effect:

It focuses on the result:

The report has been approved. (The important bit is that it’s approved.)

It hides or downplays the doer:

The deadline was missed. (By whom?)

The problem is overuse, especially where responsibility matters:

Mistakes were made. → We made mistakes.

The second is clearer, braver, and more likely to build trust.

At work:

• Use the active by default in emails, reports, and instructions.
• Use the passive when the doer is unknown, irrelevant, or obvious from context.

9. Repeating words

It’s fine — often helpful — to repeat key words:

This policy protects customers. It also protects staff.

What you want to avoid is mindless repetition of vague fillers:

This is very, very, very important.

Or awkward variety for its own sake:

Our clients love working with us. The company’s customers value the organisation’s service.

Just say clients again, or use they.

10. “Texting grammar”

People worry that writing:

u free 2nite?

…means you’ll forget how to write:

Are you free tonight?

Most adults are perfectly capable of keeping the two worlds separate. The real issue isn’t texting; it’s never having had a chance to learn the formal patterns.

If you’re reading this article, you’re already doing the main thing you need: becoming more aware of how you switch style.

Common Mistake:
Bending over backwards to avoid a supposed rule (no sentence‑starting But, no passive, no repeated word) and ending up with something longer, murkier, and harder to read.

Quick recap:
- Many myths come from school shortcuts or Latin envy, not real English.
- Use sentence‑starting And/But sparingly but confidently in most everyday writing.
- Split infinitives and final prepositions are fine when they serve clarity.
- Contractions and singular they are standard in modern business English.
- Active voice and plain language usually beat passive, jargon‑heavy prose.

Advanced (Mastery): Nuance, Register, and People’s Feelings

If you write a lot — reports, policies, web copy, funding bids — you’ll sometimes bump into people with strong opinions about “correctness”. At this level, the question stops being “Is this allowed?” and becomes:

• “What does my audience expect?”
• “What tone do I want?”
• “What am I signalling, intentionally or not?”

Let’s revisit the myths with that in mind.

Starting with and/but: Rhythm and stance

Beginning a sentence with And or But changes the rhythm and stance:

However, there is a problem with this approach. – more formal, cooler.
But there’s a problem with this approach. – punchier, more direct.

In a report to senior management, a scattering of But at the start can sharpen your argument. In a legal contract, you’d probably go with However and In addition.

Advanced move:
Use sentence‑starting But to mark a clear pivot in your reasoning — but don’t pepper every paragraph with it, or the effect wears off.

Split infinitives: Rhythm and nuance

Sometimes the position of the adverb subtly changes meaning:

We expect the software to fully comply with regulations.
vs
We fully expect the software to comply with regulations.

The first focuses on the software’s level of compliance; the second on how strong your expectation is.

This is where “never split the infinitive” stops being a fussy rule and starts being a distraction. You should be thinking about what you want to emphasise, not obeying a rule made for another language.

Final prepositions: Formality and flow

There are moments where moving the preposition away from the end sounds more polished:

The values on which this company is built…

…rather than:

The values this company is built on…

Both are fine. The first is slightly more ceremonial; the second more conversational.

If you’re writing a speech for a CEO to give at a conference, you might favour the first. For an intranet FAQ, the second is friendlier.

Contractions: Identity and warmth

Contractions signal warmth and informality. Not using them can sound:

• dignified and measured, or
• distant and stiff — depending on context.

In customer‑facing text, many brands now consciously choose contractions to sound human:

We’re sorry — something’s gone wrong at our end.

Compare:

We are sorry. An error has occurred.

Both are “correct”. Only one sounds like an actual person.

If you’re drafting policy documents, you might reduce contractions slightly — but over‑stripping them can make already‑dull text harder to digest.

Singular they: Inclusion over pedantry

At this point, anyone still insisting “they can only be plural” is out of step with mainstream usage.

From an HR or management perspective, the key point is this: using someone’s chosen pronoun is basic respect. It doesn’t matter what a 19th‑century grammarian would have preferred.

In general statements, singular they also helps you avoid clumsy repetitions of he or she:

If a member of staff needs support, they should speak to their line manager first.

That’s now standard in professional writing.

I vs me and social class

Hypercorrections like “between you and I” often come from people who were scolded as children for saying “Me and John” and over‑corrected.

There’s also a class element: some people equate “sounding posh” with sounding correct. The two are not the same.

Knowing why “between you and me” is right helps you stay calm when someone “corrects” you incorrectly. You can decide whether it’s worth the argument.

Passive voice: Responsibility and trust

One reason style guides warn against the passive is that it’s often used to avoid taking responsibility:

The report was lost.
The wrong data was used.

You can’t always fix that with grammar — an organisation might genuinely be trying to blur blame. But as a writer, you can make conscious choices:

We lost the report.
We used the wrong data.

Those versions feel riskier to write, but they also build trust.

Advanced principle:
Watch for the passive in public language — press releases, apologies, policies. Often, who’s doing what is the real story.

Repetition: Cohesion and emphasis

In longer documents, repeating key terms helps your reader follow the thread:

In this policy, “staff” includes permanent and temporary employees. Staff must…

Swapping staff for employees, personnel, team members just to avoid repetition can weaken that cohesion.

Rhetorically, deliberate repetition can be powerful:

We need time to think. Time to test. Time to get this right.

That’s not sloppy; it’s crafted.

Texting and code‑switching

If you’re juggling WhatsApp with friends, Teams/Slack at work, and the odd formal letter, you’re already code‑switching: shifting vocabulary, grammar, and tone to suit the context.

Seeing “u ok?” in a message doesn’t mean people can’t also write “Are you all right?” when necessary. If you’re worried about your own formal writing, the answer isn’t to stop texting; it’s to give yourself more practice in the formal register.

Pro‑Tip:
When someone tells you, “You can’t do X in proper English,” ask two questions:
1) “Can they show me a modern style guide or respected publication that backs this up?”
2) “Even if it’s only a preference, do I want to follow it for this audience?”
That way, you stay in control of your choices, rather than being bullied by ghosts of teachers past.

Quick recap:
- At advanced level, the issue isn’t “allowed vs not allowed” but “What tone and effect do I want?”
- Sentence‑starting And/But, split infinitives, and final prepositions are tools for rhythm and clarity.
- Contractions and singular they are part of sounding modern and human.
- Passive voice and repetition can strengthen or weaken your message, depending on how you use them.
- Code‑switching between registers is a sign of linguistic skill, not decay.

UK vs US Usage

Most of the myths we’ve covered are shared across British and American English. The arguments are remarkably similar on both sides of the Atlantic.

Here’s how things line up.

• Sentence‑starting And/But: Common in both UK and US writing. Some American schoolteachers are a bit stricter about it in essays, but newspapers and books in both varieties happily use it.
• Split infinitives: Modern UK and US style guides largely dropped the objection decades ago. The odd traditionalist remains.
• Final prepositions: Again, both varieties now accept them in normal prose. The “rule” is dying everywhere except in the minds of a few die‑hards.
• Contractions: US business writing can sometimes be a touch looser and more conversational; UK formal writing a touch stiffer. But both use contractions widely in anything short of legal/academic documents.
• Singular they: Accepted and spreading in both. US organisations were slightly quicker to formalise it in style guides; UK institutions are catching up fast.

The big visible differences are spelling and some vocabulary, not grammar:

• colour [US: color], organise [US: organize], traveller [US: traveler].
• flat [US: apartment], lift [US: elevator], etc.

So if you’re reading an American website barking “Never use the passive!”, or a British columnist insisting “You cannot ever end with a preposition!”, recognise both as style preferences, not cross‑border legal requirements.

Quick recap:
- UK and US English largely agree on these myths: most are outdated on both sides.
- Real differences are mostly in spelling and vocabulary, not deep grammar.
- Individual teachers or managers may have personal preferences — follow them where it’s tactful.
- Don’t let any one country’s internet guru convince you their pet peeves are universal law.

Key Takeaways

• A lot of scary “rules” about English are myths — useful in narrow contexts at best, actively unhelpful at worst.
• You can start sentences with And/But, split infinitives, end with prepositions, use contractions, and write singular they without breaking modern English.
• The important distinction isn’t “correct vs incorrect” so much as “clear vs muddy”, “appropriate vs inappropriate for this audience”.
• Understanding why myths arose helps you decide when to politely ignore them and when to play along.
• Your real goal is to write in a way that’s clear, respectful, and effective — not to satisfy every imaginary schoolteacher in your head.

Check Your Understanding

Questions

1. Which version would you choose for a clear, modern work email?

a) However, there is a matter about which I am concerned.
b) However, there is something about which I am concerned.
c) However, there’s something I’m concerned about.

2. In which sentence is I used correctly?

a) The client met with James and I yesterday.
b) James and I met the client yesterday.
c) The client gave the contract to James and I.

3. Rewrite this in a natural, modern form, keeping the meaning:
   If a user forgets his or her password, he or she must contact the administrator.
4. True or false: In a formal report, you are forbidden to use contractions.
5. What’s the main problem with this sentence, if any?
   Mistakes were made, but we’re working to quickly fix the system.

Internal Links (Pillar 1 Articles)

This article should link to:

• “What Is Grammar?” — for a fuller explanation of grammar as patterns, not just prohibitions.
• “Standard English, Dialects, and ‘Correctness’” — for more on register, prejudice, and why “proper English” isn’t always a simple idea.