*This morning at 8 o'clock she was reading .
*While she was listening to music, her brother did his homework. 
*Last Monday he was traveling .
*When he arrived, I was watching TV. 
*She was playing tennis. 
*They were traveling. 
*I was not listening. 
*Were they dancing? 
*I was having a shower when he arrived
*We were playing computer games at home

*You were dancing sevillanas with the French girl
*You were studying English when I phoned
*She was cooking dinner and they were eating an ice-cream
* 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 email, the computer suddenly went off.
* What were you doing when you broke your leg?

* I was snowboarding.
*'He was traveling on a carriage, and he frequently told the driver to stop...'
*'While/When Leonardo was drawing a deer, a mysterious young man came forth.'*
*'Leonardo was drawing a deer when a mysterious young man came forth.'*
*As she was walking to the kitchen, she heard strange noises coming from Leonardo's studio.'*

* Although the students had been working on the project for six weeks, their report was not ready by the due date.
* Before the hydrogen project began, the engineers had been working on hybrid technology


Yo estaba caminando por la playa, Ella estaba mirando por la ventana, Yo estaba pensando en ti, shakira estaba hablando.