Simple past. I saw a movie yesterday. Last year, I traveled to Korea.
Past continuous. While we were having the picnic, it started to rain. While I was writing the email, the computer suddenly went off.
Past perfect continuous. She had been working at that company for three years when it went out of business. John was in a detention because he had been misbehaving.
I saw a movie yesterday.
Last year, I traveled to Korea.
Past continuous.
While we were having the picnic, it started to rain.
While I was writing the email, the computer suddenly went off.
Past perfect continuous.
She had been working at that company for three years when it went out of business.
John was in a detention because he had been misbehaving.