People lie when they feel being threatened.
Example: I would love to work during the weekend for our new project.
If everyone will work during the weekend in your department, you have to . Otherwise, you will be fired or isolated.
People lie when they do not want to tell the truth
Example: He will recover soon. Cancer is not a big problem. The medical technology is developing so fast. The doctors will find a way to save him.
You know he is going to die, but you just want to give him some hope.
People lie when they want to save other's faces.
Example: It's not your fault. It 's just the boss. He is in a bad mood.
You know he or she made a big mistake in work, that's why the boss is so mad with him/her. But you do not want to make him/her feel bad about himself/herself.
People lie when they want to make others feel good for themselves
Example:Mom, I like your new coat. It's really good on you.
You know how terrible that coat is, but you do not want to hurt your mom's feeling.
make some suprise
other people can't accept a thing
don't want be hurt
don't want to know the truth
keep the relationship go a long time
reason for benefit
hurt other people
the lie influence other people's live
attitude to lie
related to me
none of my business
the things don't want people know