1. Past Continuous FORM [was/were + present participle] Examples: You were studying when she called. Were you studying when she called? You were not studying when she called.

2. Interrupted Action in the Past
Use the Past Continuous to indicate that a longer action in the past was interrupted. The interruption is usually a shorter action in the Simple Past. Remember this can be a real interruption or just an interruption in time.

3. Examples: I was watching TV when she called.
When the phone rang, she was writing a letter.
While we were having the picnic, it started to rain.
What were you doing when the earthquake started?
I was listening to my iPod, so I didn't hear the fire alarm.
You were not listening to me when I told you to turn the oven off.
While John was sleeping last night, someone stole his car.
Sammy was waiting for us when we got off the plane.
While I was writing the , the computer suddenly went off.
A: What were you doing when you broke your leg? B: I was snowboarding.

4. While vs. When
Clauses are groups of words which have meaning, but are often not complete sentences. Some clauses begin with the word "when" such as "when she called" or "when it bit me." Other clauses begin with "while" such as "while she was sleeping" and "while he was surfing." When you talk about things in the past, "when" is most often followed by the verb tense Simple Past, whereas "while" is usually followed by Past Continuous. "While" expresses the idea of "during that time."

5. Complete these exercises in your notebook:

6. Last night, while I was doing my homework, Angela (call)___________
Last night, while I was doing my homework, Angela (call)___________ . She said she (call) ___________me on her cell phone from her biology classroom at UCLA. I asked her if she (wait) ____________for class, but she said that the professor was at the front of the hall lecturing while she (talk) ____________to me. I couldn't believe she (make) _________a phone call during the lecture. I asked what was going on.

7. She said her biology professor was so boring that several of the students (sleep, actually) _______________in class. Some of the students (talk) __________about their plans for the weekend and the student next to her (draw) ______________a picture of a horse. When Angela (tell) __________me she was not satisfied with the class, I (mention) __________that my biology professor was quite good and (suggest) __________that she switch to my class.

8. While we were talking, I (hear) ___________her professor yell, "Miss, are you making a phone call?" Suddenly, the line went dead. I (hang) __________up the phone and went to the kitchen to make dinner. As I (cut) ________vegetables for a salad, the phone rang once again. It (be) _____ Angela, but this time she wasn't sitting in class.