Formal vs Informal English

The type of English we use is determined by the context and the environment. When in a meeting with management, formal language is adopted. When conversing with a coworker over coffee, informal English is used.

What’s the difference?
Formal language is defined by the use of standard English, the rare use of personal pronouns, and a lack of colloquial words. Informal language, on the other hand, enables the use of nonstandard English forms, colloquial terminology, and often shorter sentences. Below are some examples of formal and informal English.

Formal	Informal
Good morning, Ms. Matlala. How are you?                                                                      I’m very well, thank you.	Hi, Sinazo. How are you doing? Fine, thanks.
May I introduce Thapelo Motaung?	This is Thapelo.
Would you like a cup of tea, Sir?	Do you want tea?
Madam, I’ll see you later this evening.	Hey, see you later, missy!
I would like to enquire about your services.	I’d like to ask about your services.
Please verify.	Just check!
Lunga resides on Skinner street.	Lunga lives on Skinner street.
Mr. Raborife, if it's not too much effort, please bring me a burger on your way to the office.	Yo, get me a burger on your way here.
My sincere apologies.	I’m sorry.
I refuse to tolerate such behaviour!	I won’t put up with this!
Greetings, Ms. Ramford. I highly                            appreciate your response. Thank you.  I look forward to our meeting.	Hi Sammy! Your reply made my day.  Can’t wait to see you.