We can use "hello" to greet people in an informal situation.
举一反三
- For informal situation, we can greet people with: A: “Hi” or “Hello” B: “Good morning/afternoon”
- Expression that you can not use to greet people is .（ ）
- In informal situations, you greet people like this
- It’s unnecessary to use formal expressions and you can say “hi” or “hello” to greet each other in a business meeting.
- It is impolite to use informal style to greet someone you meet the first time.