Set Phrases
Master fixed expressions in English: greetings, goodbyes, courtesy, opinions, agreement and disagreement, and changing the topic. Learn to sound more natural in conversation.
What Are Set Phrases?
Set phrases (idiomatic expressions) are fixed expressions commonly used in spoken English. They are word combinations with a specific meaning that are used as a single unit.
📋 Quick Reference
Greetings and Goodbyes
Greetings and goodbyes are essential phrases for basic social interaction.
| Situation | Phrase | Typical Response | Formality Level |
|---|---|---|---|
| Informal greeting | Hi there! | Hi! How are you? | Informal |
| Formal greeting | Good morning | Good morning to you too | Formal |
| Casual greeting | Hey, what's up? | Not much, you? | Very informal |
| Informal goodbye | See you later! | See you! | Informal |
| Formal goodbye | Have a good day | Thank you, you too | Formal |
| Casual goodbye | Catch you later! | Sure thing! | Very informal |
| Goodbye with future plans | Talk to you soon | Looking forward to it | Neutral |
Informal greeting: 'Hi there! How are you?'
Formal greeting: 'Good morning'
Informal goodbye: 'See you later!'
Using Greetings and Goodbyes
To use them effectively:
- Choose the appropriate level of formality
- Respond in an appropriate way
- Consider your relationship with the person
- Use natural, authentic expressions
Courtesy Expressions
Courtesy expressions are fundamental for maintaining positive social relationships.
| Situation | Phrase | Typical Response | When to Use |
|---|---|---|---|
| Gratitude | Thanks a lot! | You're welcome! | After receiving help |
| Excuse me (attention) | Excuse me | That's okay | When interrupting or asking for something |
| Apology | I'm sorry | No problem | When you make a mistake |
| Permission | May I...? | Of course | When asking for permission |
| Request | Could you...? | Sure, no problem | When asking for a favor |
| Congratulations | Congratulations! | Thank you! | When celebrating achievements |
| Sympathy | I'm sorry for your loss | Thank you | In sad situations |
Gratitude: 'Thanks a lot!'
Excuse me: 'Excuse me, may I pass?'
Permission: 'May I use your phone?'
Giving Opinions
These phrases help you share your opinion in a natural, appropriate way.
| Certainty Level | Phrase | Use | Example |
|---|---|---|---|
| Very sure | I'm absolutely sure | When you are very confident | I'm absolutely sure it's true |
| Sure | I'm convinced that | When you hold a strong belief | I'm convinced that it works |
| Moderate | I think that | Personal opinion | I think that's a good idea |
| Unsure | I'm not sure, but | When you are not certain | I'm not sure, but it might work |
| Very unsure | I have no idea | When you do not know | I have no idea what to do |
| Neutral | It seems to me | Neutral opinion | It seems to me it's okay |
| Personal | In my view | Personal perspective | In my view, it's important |
Very sure: 'I'm absolutely sure it's true'
Sounds confident; use when the evidence is strong.
Moderate: 'I think that's a good idea'
Softens the claim; typical in discussion.
Uncertain: 'I'm not sure, but it might work'
Using Opinion Phrases
To express opinions effectively:
- Choose the right level of certainty
- Consider the context and your audience
- Be honest about how much you know
- Use phrases that match how you really feel
Agreeing and Disagreeing
These phrases help you express agreement or disagreement politely.
| Type | Phrase | Intensity Level | Example |
|---|---|---|---|
| Full agreement | I completely agree | Very strong | I completely agree with you |
| Strong agreement | I totally agree | Strong | I totally agree on that point |
| Moderate agreement | I agree with you | Moderate | I agree with you on this |
| Partial agreement | I partly agree | Weak | I partly agree with your idea |
| Soft disagreement | I'm not sure I agree | Soft | I'm not sure I agree with that |
| Moderate disagreement | I disagree | Moderate | I disagree with your opinion |
| Strong disagreement | I completely disagree | Strong | I completely disagree with that |
Full agreement: 'I completely agree with you'
Use with peers when you want to be emphatic but polite.
Moderate agreement: 'I agree with you on this'
Narrows agreement to one point; useful in debates.
Soft disagreement: 'I'm not sure I agree with that'
Hedges disagreement; keeps rapport.
Changing the Topic
These phrases help you move to a new topic in a natural, polite way.
| Phrase | Formality Level | Use | Example |
|---|---|---|---|
| By the way | Informal | Casual topic shift | By the way, did you hear about...? |
| Speaking of which | Neutral | Related shift | Speaking of which, how is your job? |
| That reminds me | Neutral | Remember something related | That reminds me, I need to call... |
| On a different note | Formal | Formal topic shift | On a different note, let's discuss... |
| Incidentally | Formal | Additional information | Incidentally, I heard that... |
| Before I forget | Neutral | Remember something important | Before I forget, don't forget to... |
| Oh, I almost forgot | Informal | Remember something you forgot | Oh, I almost forgot to tell you... |
Casual change: 'By the way, did you hear about...?'
Related change: 'Speaking of which, how is your job?'
Reminder: 'That reminds me, I need to call...'
Links the new point to what was just said.
Changing the Topic
To change topics effectively:
- Use phrases that fit the formality level
- Make sure the shift feels natural
- Consider whether a change is appropriate
- Use phrases that smooth the transition
Showing Interest
These phrases help you show interest and keep the conversation active.
| Phrase | Use | Expected Response | Enthusiasm Level |
|---|---|---|---|
| That's interesting! | Show interest | They continue explaining | Moderate |
| Really? | Show surprise | They confirm or explain | High |
| Wow! | Show amazement | They continue the story | Very high |
| I see | Show understanding | They continue explaining | Low |
| That's amazing! | Show admiration | They continue explaining | High |
| No way! | Show disbelief | They confirm or explain | Very high |
| That's cool! | Show approval | They continue explaining | Moderate |
Interest: 'That's interesting!'
Surprise: 'Really?'
Amazement: 'Wow!'
Common Mistakes
Correct: Match formality to the situation ✅
Context determines the right level
Correct: Reply in a natural, appropriate way ✅
Good back-and-forth keeps conversation flowing
Correct: Use phrases that match your real level of certainty ✅
Being honest about what you know matters
Correct: Pick phrases that fit the relationship ✅
Relationship often sets how formal you should be
Important Rules
1. Context drives usage
Choose phrases that fit the situation.
- Formal: meetings, presentations, interviews
- Informal: friends, family, casual chat
- Neutral: colleagues, acquaintances, mixed settings
- Consider your relationship with the person
2. Appropriate responses
Answer in a natural, fitting way.
- Greetings invite greeting replies
- Questions invite informative answers
- Courtesy phrases invite courteous replies
- Keep formality consistent
3. Authenticity and naturalness
Use phrases that sound natural for you.
- Practice until they feel natural
- Do not force phrases that feel wrong for you
- Adapt expressions to your personality
- Authenticity matters more than perfection