Once you have been introduced to someone,the next time you meet each other it is important to greet him/her.We also greet people when we leave people.There are various ways to greet people in formal and informal situations in English (as in all languages).
■Formal Greetings:When Arriving
◇Good morning / afternoon / evening.
◇Good day Sir / Madam (very formal).
◇Hello (name),how are you?
■Informal Greetings:When Arriving
◇Hi / Hello.
◇How are you doing? (very informal)
◇What’s up? (very informal)
◇How are you?
The question “How are you?” or “What’s up?” doesn’t necessarily need to respond.If you want to respond,the following phrases are usually used:
◇Fine / Great (informal).
◇Very well,thank you.And you? (formal)
■Formal Greetings: When Departing
◇Goodbye.
◇It was a pleasure seeing you.
◇Good night.(after 8 p.m.)
■Informal Greetings:When Departing
◇Later.(very informal)
◇Goodbye / Bye.
◇See you (later).