Formal vs Informal English

English Spoken and Grammar Tutorial — Lesson 27 of 27

Spoken English
Learning objectives: Understand the difference between formal and informal English, choose suitable language for different situations, and practise changing casual sentences into professional English.

1. What Is Formal and Informal English?

Formal English is generally used in professional, academic, official, or respectful situations.

Informal English is generally used with friends, family, and people you know well in relaxed conversations.

SituationFormal EnglishInformal English
Speaking to a teacherCould you please explain this again?Can you explain this again?
Writing to a managerI would like to discuss this matter.I want to talk about this.
Asking a friendWould you like to join me?Wanna come with me?
Requesting assistanceCould you assist me, please?Can you give me a hand?

Note: Informal language is not necessarily incorrect. The important thing is to choose the right style for the situation.

2. Common Formal and Informal Expressions

Meaning / SituationFormal EnglishInformal EnglishHindi Meaning
Requesting helpCould you assist me?Can you give me a hand?क्या आप मेरी मदद कर सकते हैं?
Starting a conversationHow are you doing today?How's it going?आज आप कैसे हैं?
Thanking someoneI sincerely appreciate your help.Thanks a lot!आपकी मदद के लिए बहुत धन्यवाद।
ApologisingI apologise for the inconvenience.Sorry about that.उस परेशानी के लिए माफ़ कीजिए।
Asking for informationCould you provide further details?Can you tell me more?क्या आप और जानकारी दे सकते हैं?
DisagreeingI see your point, but I have a different view.I get what you mean, but I disagree.मैं आपकी बात समझता हूँ, लेकिन मेरी राय अलग है।
LeavingIt was a pleasure speaking with you.It was great talking to you.आपसे बात करके अच्छा लगा।
Asking someone to waitWould you mind waiting for a moment?Hang on a second.कृपया एक क्षण इंतज़ार करें।
Not understandingI'm afraid I don't fully understand.I don't get it.मुझे पूरी तरह समझ नहीं आया।
Giving an opinionIn my opinion, this is a suitable option.I think this one is good.मेरे विचार में यह सही विकल्प है।
ConfirmingI would like to confirm the appointment.Just checking we're still meeting.मैं अपॉइंटमेंट की पुष्टि करना चाहता हूँ।
DecliningUnfortunately, I will be unable to attend.Sorry, I can't make it.दुर्भाग्यवश, मैं शामिल नहीं हो पाऊँगा।

3. Formal English for Work and Study

Use clear and respectful language in emails, interviews, presentations, meetings, and conversations with teachers or customers.

  • Informal: Send me the file.
    Formal: Could you please send me the file?
  • Informal: I need a day off.
    Formal: I would like to request a day off.
  • Informal: I can't come today.
    Formal: Unfortunately, I will be unable to attend today.
  • Informal: Tell me what happened.
    Formal: Could you please explain what happened?
  • Informal: Your idea is wrong.
    Formal: I understand your suggestion; however, I have a different perspective.
  • Informal: I need this quickly.
    Formal: I would appreciate it if you could send this at your earliest convenience.

4. Informal English, Contractions, and Slang

Informal conversation often uses contractions and casual expressions. In formal writing, prefer full forms unless the context allows a conversational tone.

Informal formMore formal formExample
I'mI amInformal: I'm ready. / Formal: I am ready.
can'tcannot / am unable toI'm unable to attend the meeting.
wannawant toInformal: I wanna learn. / Formal: I want to learn.
gonnagoing toInformal: I'm gonna call. / Formal: I am going to call.
kidschildrenFormal: The children are waiting.
stuffitems / materials / thingsFormal: Please bring the required materials.
ASAPas soon as possibleIn formal writing, spell out abbreviations when appropriate.
Important: Contractions such as “I'm” and “can't” are acceptable in many professional contexts. Formality depends on the audience and purpose; not every contraction is inappropriate.

5. Short Dialogues

A. Informal conversation between friends

A: Hey! How's it going?

B: Pretty good. What about you?

A: Great! Wanna grab some tea?

B: Sure, let's go!

B. Formal conversation at an office

A: Good morning. How are you today?

B: I'm doing well, thank you. How can I help you?

A: Could we discuss the project schedule, please?

B: Certainly. Please have a seat.

6. Common Mistakes

Less suitable / IncorrectBetter choiceWhy?
Hey, send the report now! (to a manager)Could you please send me the report?A polite request suits a professional context.
I wanna apply for this job. (formal application)I would like to apply for this position.Use standard wording in formal documents.
Give me information.Could you please provide more information?The second version sounds more respectful.
Using slang in every situationChoose expressions for your audience.Language style depends on context.

7. Quick Quiz

1. Which sentence is most suitable for a formal email?


2. Which expression is informal?


3. Choose the most polite way to disagree at a meeting.