Vocab for Teachers
Idioms & Fixed Expressions
🟡 Intermediate

Apologies: I'm Sorry, I Apologise, Please Forgive Me, My Mistake

What this session covers

In adult life, students often need to apologise — for small mistakes, big mistakes, lateness, misunderstandings, hurting feelings. English has many ways to apologise at different levels. 'Sorry' is the basic casual apology. 'I am sorry' is standard polite. 'I apologise' is more formal. 'Please forgive me' is strong. 'I beg your pardon' is formal old-fashioned. 'My mistake' or 'my fault' acknowledges responsibility. 'My bad' is casual American. 'My deepest apologies' is very formal. Each fits a different situation. Students who use only 'sorry' miss precision and warmth. The lesson connects to thanks expressions (#88), sympathy expressions (#79), and other social-language lessons. Together they cover the main politeness areas of adult English. This lesson covers apology expressions and also how to accept apologies — 'no worries', 'it's fine', 'do not worry about it'.

Personal Reflection

Before you start — think honestly about your own teaching and experience.

Q1
When your students need to apologise — for being late, for making a mistake, for hurting someone — do they reach for 'sorry' for everything, missing the chance to use 'I apologise', 'please forgive me', or 'my mistake'?
Q2
Which of these have you seen your students get wrong or avoid using altogether?

Discover the Pattern

Look at the examples. Answer each question before reading the explanation — this is how your students will learn too.

1
Different levels of apology:

MILD CASUAL (small mistake):
Sorry. — Quick casual apology.
My bad. — Very casual American.
My mistake. — Acknowledging it.
My fault. — Taking responsibility.

STANDARD:
I am sorry. — Standard polite apology.
I am so sorry. — Stronger polite.
I am really sorry. — Stronger.

FORMAL:
I apologise. — More formal.
I do apologise. — Formal stronger.
My apologies. — Formal short form.
I beg your pardon. — Formal, slightly old-fashioned.

STRONG:
I cannot apologise enough. — Very strong.
Please forgive me. — Strong personal.
I am deeply sorry. — Strong formal.
My deepest apologies. — Very formal strong.

Why does English have so many ways to apologise?

Each apology expression fits a different combination of formality and seriousness. 'Sorry' is the basic casual — for small mistakes among friends. 'My bad' is very casual American — for everyday small mistakes. 'I am sorry' is the standard polite form — works in most contexts. 'I apologise' is more formal — for professional contexts. 'Please forgive me' is strong personal — for serious mistakes that hurt someone. 'My deepest apologies' is very formal — for serious wrongs in formal contexts. Students who use only 'sorry' for everything miss the precision native speakers use. For small accidents, sorry is enough. For serious wrongs, stronger expressions match the situation.

2
Matching apology to mistake:

A: You step on someone's foot in a crowded market — small accident.
Sorry! — Casual quick apology.

B: You are 20 minutes late for a meeting with a client.
I am very sorry for being late. I apologise. — Polite formal.

C: You forgot your friend's birthday and feel really bad about it.
I am so sorry — please forgive me. I cannot believe I forgot. — Strong personal.

D: A formal business email apologising for an important error in a report.
Please accept my deepest apologies for the error. I will correct it immediately. — Very formal.

E: A young person bumps into you in the street.
My bad! — Very casual.

Why match the apology to the mistake?

Each context fits a specific apology level. Context A (stepped on foot, accident): 'Sorry' is enough — small accident. Context B (20 minutes late for client meeting): polite formal — 'I am very sorry' or 'I apologise'. Late for a client deserves more than 'sorry'. Context C (forgot friend's birthday): strong personal — 'I am so sorry, please forgive me'. The friend's feelings are hurt — strong apology shows you care. Context D (business email about error): very formal — 'Please accept my deepest apologies'. Serious professional context. Context E (small bump): very casual — 'My bad' or 'sorry'. Match the strength of the apology to the size of the mistake. Over-apologising for small things sounds excessive. Under-apologising for big things sounds careless.

3
Accepting apologies:

When someone apologises, common responses:

MILD:
It is fine.
No worries.
It is okay.
Not a problem.
Do not worry about it.

WARM:
Do not worry, really. — Reassuring.
Thank you for the apology. — Acknowledging.
It is forgotten. — Generous.

FORMAL:
Apology accepted.
Thank you, no harm done.
I accept your apology.

Why do students need to know how to accept apologies?

Receiving apologies is a social skill too. When someone apologises, English expects a response. Without one, the apology hangs awkwardly in the air. The most common casual responses are 'no worries' (British/Australian), 'it is fine' (American/general), 'no problem'. Warm responses acknowledge the apology and reassure the person — 'do not worry, really' or 'thank you for the apology'. Formal responses are more measured — 'apology accepted' or 'I accept your apology' (slightly cool but accepts). For small mistakes, casual responses fit. For serious mistakes, the response should match the seriousness — 'do not worry about it' for late arrivals, 'thank you for apologising' for important hurts. Students should learn the responses to complete the apology exchange naturally.

The Pattern — What You Just Discovered

English has many expressions for apologies at different levels. Casual: sorry, my bad, my mistake. Standard: I am sorry, I am so sorry. Formal: I apologise, my apologies, I beg your pardon. Strong: please forgive me, I cannot apologise enough, my deepest apologies. For accepting apologies: no worries (casual), it is fine, do not worry about it (warm), apology accepted (formal). Match the apology to the size of the mistake — small mistakes get small apologies; serious mistakes get strong apologies.
Expression Level Register When to use
Sorry Standard mild Casual Quick everyday apology. Small mistakes.
My bad Casual quick Very casual American Small mistake or accident, casual context.
My mistake / My fault Acknowledging Casual to neutral Taking responsibility for a mistake.
I am sorry Standard polite Neutral The standard polite apology. Works in most contexts.
I am so sorry / I am very sorry Standard with emphasis Neutral For more significant mistakes.
I apologise Formal Formal More formal than 'I am sorry'. For professional contexts.
My apologies Formal short Formal Common in business emails and meetings.
I beg your pardon Formal Formal, slightly old-fashioned For polite formal apology, often when not understanding.
Please forgive me Strong personal Personal For serious mistakes that hurt someone.
I cannot apologise enough Very strong Neutral to formal For very serious mistakes.
My deepest apologies Very formal strong Very formal For serious wrongs in formal contexts.
No worries / It is fine Accepting apology Casual For accepting apologies casually.
Usage Notes

NOTE 1 — Match strength to mistake: Small mistake (small bump, brief lateness) → casual apology (sorry, my bad). Standard mistake → I am sorry. Significant mistake → I am very sorry, I apologise. Serious mistake (hurt feelings, big error) → please forgive me, my deepest apologies. Match the apology to what you did wrong.

NOTE 2 — Match register: Casual contexts → sorry, my bad, my mistake. Neutral → I am sorry, my apologies. Formal → I apologise, please accept my apologies, my deepest apologies. Mismatched register sounds wrong — using 'my bad' in a formal email or 'I beg your pardon' between friends.

NOTE 3 — Apologies often come with explanations: A good apology often has the apology plus a brief explanation. 'I am sorry I am late — there was a problem with the bus.' 'I apologise for the error — I will correct it immediately.' The explanation shows the apology is genuine and offers to fix what went wrong.

NOTE 4 — Apologies sometimes come with offers: For more significant mistakes, the apology often includes an offer to make things right. 'I am so sorry — let me buy you another drink.' 'My apologies for the delay — I will send the corrected report immediately.' The offer shows commitment to fixing the situation.

NOTE 5 — Always respond to apologies: When someone apologises, give a response. 'No worries' or 'it is fine' is enough for casual mistakes. For serious apologies, respond more warmly — 'thank you for the apology', 'do not worry about it', 'I appreciate your saying that'. Without a response, the apology feels unfinished.

Note

Apology expressions are essential for adult social and professional life. Students who use only 'sorry' miss the variety needed for different situations. Cultural context: in some cultures, frequent apologies show humility; in others, they suggest weakness. English allows a range — match the strength to the mistake. The lesson connects to thanks expressions (#88), sympathy expressions (#79), agreement/disagreement (#44), classroom expressions (#78). All cover social-language patterns. Apologies fit alongside thanks as the two most common politeness expressions in daily life.

💡

Practise apologies through real situations. One student does something wrong (knocks something over, is late, forgets). The other receives the apology and responds. Drill different levels — a small bump (casual sorry, no worries response) to a forgotten birthday (strong apology, warm response). Real exchanges fix the chunks in memory.

Common Student Errors

I cannot apologise enough for stepping on your foot in the crowded bus. (small accident)
Sorry! / My apologies. / I am sorry — that was clumsy of me.
Why'I cannot apologise enough' is for very serious mistakes — too strong for a small accidental bump. The right level is casual ('sorry') or polite ('I am sorry'). Match the strength to the size of the mistake.
My bad about forgetting your wedding anniversary again this year. (between spouses)
I am so sorry — please forgive me. I cannot believe I forgot again.
Why'My bad' is very casual and dismissive — wrong for a serious matter that hurts feelings. For forgetting an important event, a strong personal apology fits — 'I am so sorry, please forgive me'. Match the apology to the seriousness.
I beg your pardon for being late, mate. (to a friend in casual conversation)
Sorry I am late, mate. / Sorry mate, the bus was delayed.
Why'I beg your pardon' is formal old-fashioned — too formal for casual conversation with friends. The casual apology is 'sorry' (or 'my bad'). Match register to context.
My deepest apologies for not remembering to bring sugar. (small everyday mistake)
Sorry I forgot the sugar. / I am sorry, I forgot the sugar.
Why'My deepest apologies' is very formal and strong — for serious mistakes. Forgetting sugar is a small everyday slip — casual sorry fits. The wrong expression sounds excessive.
Friend says 'sorry I am late'. I do not respond at all.
Friend says 'sorry I am late'. I respond 'No worries' or 'It is fine' or 'Do not worry about it'.
WhyWhen apologised to, English expects a response. The standard responses are 'no worries' (casual), 'it is fine', 'do not worry about it'. Without a response, the apology feels unfinished and slightly awkward.

Check Your Understanding — Part 1

Choose the best apology for each situation.

You bump into someone in a crowded market and step lightly on their foot. The other person looks at you.
Pick the most appropriate word:
You are writing a formal business email apologising for sending the wrong document to a client. The error caused a delay.
Pick the most appropriate word:
You forgot your best friend's birthday and they are clearly hurt by it. You want to give a strong personal apology.
Pick the most appropriate word:
In a meeting at work, you arrive five minutes late. Your colleagues are all there.
Pick the most appropriate word:
A friend says 'sorry I forgot to call you yesterday'. You want to respond casually and reassuringly.
Pick the most appropriate word:
0 / 5 answered

Check Your Understanding — Part 2: Why Is It Wrong?

Each sentence has a problem with an apology. Suggest a better version and explain.

My deepest apologies for stepping on your foot in the crowded bus this morning.
Write the correct sentence:
Explain why it is wrong:
Sorry I stepped on your foot in the crowded bus. / I am so sorry — that was clumsy.
My deepest apologies is for serious mistakes in formal contexts. Stepping on someone's foot in a crowd is a small accident. Sorry or 'I am so sorry' fits better. Match the strength to the size of the mistake.
My bad about being late for the formal job interview this morning.
Write the correct sentence:
Explain why it is wrong:
I apologise for being late for the formal job interview this morning. / I am very sorry I was late for the interview — there was a delay on the train.
My bad is very casual American — wrong for a formal job interview context. The right apology for a serious mistake in a formal context is 'I apologise' or 'I am very sorry'. Match register to context.
I beg your pardon for not bringing the sugar — I forgot to buy it. (in casual conversation between friends) | RIGHT: Sorry, I forgot the sugar.
Write the correct sentence:
Explain why it is wrong:
Sorry, I forgot the sugar.
I beg your pardon is formal old-fashioned. For a small everyday slip between friends, casual sorry fits. Match register to context. Save formal apologies for formal situations.
Friend: 'Sorry I forgot your message yesterday.' Me: 'I cannot forgive you for that mistake.'
Write the correct sentence:
Explain why it is wrong:
Friend: 'Sorry I forgot your message yesterday.' Me: 'No worries / It is fine / Do not worry about it.'
For a casual apology between friends, the response should be casual reassuring. 'I cannot forgive you' is harsh and out of place. Standard responses to apologies are 'no worries', 'it is fine', 'do not worry about it'. Match the response to the apology.

Classroom Teaching Sequence

Use this sequence directly in class — guided discovery, no textbook needed. Tap each step to mark it done.

0 / 5 done
1

STEP 1 — Beyond sorry (5 min): Ask students to apologise for different mistakes using only 'sorry'. Show that this misses precision. Establish that English has many apology expressions for different situations.

2

STEP 2 — Casual apologies (5 min): Drill the casual forms. Sorry. My bad. My mistake. My fault. For small everyday mistakes — small bumps, brief lateness, small slips. Practise five examples.

3

STEP 3 — Standard and formal (8 min): Drill the standard and formal forms. I am sorry (standard polite). I am so sorry (stronger). I apologise (formal). My apologies (formal short). Please accept my apologies (very formal). Match each to a context — small lateness (sorry), formal email (please accept my apologies), professional meeting (I apologise).

4

STEP 4 — Strong apologies (5 min): Drill the strong forms. Please forgive me (personal strong). I cannot apologise enough (very strong). My deepest apologies (very formal strong). For serious mistakes — hurt feelings, big errors. Match each to a context.

5

STEP 5 — Accepting apologies (7 min): Drill the responses. Casual: no worries, it is fine, no problem. Warm: do not worry about it, thank you for the apology. Formal: apology accepted, I accept your apology. Practise the full exchange — apology plus response.

Ready-to-Use Classroom Materials

Use directly in class — copy, adapt, or read aloud. No printing needed.

1 Apology expressions wall (display)
Create a wall display with apology expressions organised by level. CASUAL: sorry, my bad, my mistake. STANDARD: I am sorry, I am so sorry, I am very sorry. FORMAL: I apologise, my apologies, please accept my apologies. STRONG: please forgive me, I cannot apologise enough, my deepest apologies. RESPONSES: no worries, it is fine, do not worry. Refer to the wall for any apology situation.
Example sentences
CASUAL: sorry, my bad (American), my mistake, my fault
STANDARD: I am sorry, I am so sorry, I am really sorry
FORMAL: I apologise, my apologies, please accept my apologies, I beg your pardon
STRONG: please forgive me, I cannot apologise enough, my deepest apologies
RESPONSES: no worries, it is fine, do not worry about it, apology accepted (formal)
2 Match apology to mistake (oral drill)
Describe a mistake. Students must produce the right apology level. The exercise drills automatic matching of mistake size to apology strength.
Example sentences
Teacher: 'small accidental bump' → Student: 'Sorry!'
Teacher: '5 minutes late for meeting' → Student: 'Sorry I am late' or 'Apologies for being late'
Teacher: 'forgot best friend's birthday' → Student: 'I am so sorry — please forgive me'
Teacher: 'formal business error in important report' → Student: 'Please accept my deepest apologies'
3 Apology role-play (speaking)
Pairs role-play different apology situations. One student does something wrong. The other receives the apology and responds. Then swap. The exercise drills the full exchange — appropriate apology plus appropriate response.
Example sentences
Sample exchanges: A: bumps into B in market → A: 'Sorry!' → B: 'No worries.'
A: arrives late for friend's coffee → A: 'Sorry I am late, the bus was delayed.' → B: 'Do not worry about it, I just arrived too.'
A: forgot friend's birthday → A: 'I am so sorry — please forgive me. I cannot believe I forgot.' → B: 'Thank you for the apology. It hurt, but I appreciate you saying that.'

Plan Your Next Steps

For each strategy, choose the option that best describes where you are now.

Build the apology vocabulary further with more useful expressions: I am terribly sorry (formal strong), I owe you an apology (acknowledging owed), let me apologise (offering to apologise), I take full responsibility (taking blame).
Connect to thanks (#88) and sympathy (#79) — together apologies, thanks, and sympathy cover the main social-language areas. Each has its own range of expressions and registers.
Look at how apologies fit into longer messages. A good apology often has three parts: the apology itself + an explanation + an offer to fix things. 'I am sorry I am late. The traffic was bad. Let me catch up the time after work.' The three-part structure feels complete.
Teach the related skill of asking for apology — 'I think you owe me an apology', 'do you not have something to say?'. Useful in adult conversations about hurt feelings.
Ask students to write a short formal apology email for an imagined business error. The exercise drills the formal expressions in real-feeling context.
What is the one change you will make next time you teach this vocabulary?

Key Takeaways

1 English has many apology expressions at different levels. Casual: sorry, my bad, my mistake. Standard: I am sorry, I am so sorry. Formal: I apologise, my apologies, please accept my apologies. Strong: please forgive me, I cannot apologise enough, my deepest apologies.
2 Match strength to mistake. Small everyday mistake → casual sorry. Standard mistake → I am sorry. Significant mistake → I am very sorry, I apologise. Serious mistake (hurt feelings, big error) → please forgive me, deepest apologies. Mismatched apologies sound excessive or careless.
3 Match register to context. Casual situations: sorry, my bad. Formal situations: I apologise, my apologies. Mixing register is wrong — using 'my bad' in formal email sounds dismissive; using 'I beg your pardon' between friends sounds odd.
4 A good apology often comes with an explanation and offer to fix. 'I am sorry I am late — the bus was delayed. Let me make up for it.' The three parts (apology + explanation + offer) feel complete.
5 Always respond when apologised to. Casual: no worries, it is fine. Warm: do not worry about it. Formal: apology accepted. Without a response, the apology hangs awkwardly. Match the response to the apology level.