Example 2: It’s 6:00 pm now and the movie starts at 8:00 pm. I think I will walk my dog and finish my homework to pass the time until we go to the theater.
Explanation: to pass time means to do something while you’re waiting. In the first example, the speaker is waiting to see the doctor, so he is reading a magazine while waiting. In the second example, the speaker is going to walk her dog and then finish her homework while waiting for the movie.