You run into an old friend from college in a supermarket. She asks about your job. You were laid off a few months ago and haven't gotten a new job. You explain your situation.
You're watching a news broadcast that is talking about a volcano which has started to erupt. The announcer is now giving some more details about the volcano.
You're training a coworker in how to use an computer system that she needs for her job. You show her how to enter some information into a form.
You're talking to a new client. You need him to sign a contract before you can work with him. You hand him the contract and you say this.
There's an new employee in your department. You're introducing her to some of the people in your company. Now you're introducing someone who works for a person who she's already met.