Past President: During his time as president of the company, he had earned a substantial amount of money. Past Perfect Continuous: By the time she decided to start her own business, she had been earning a steady income for several years.

Past Perfect: After I had finished my degree, I decided to take a gap year to travel the world.

Past Continuous: He was studying for his exams when his phone suddenly rang.

Past Perfect Continuous: She had been working on her research project for six months before she finally completed it.

Past Simple: I attended the conference last week and learned a lot from the keynote speakers.

Past Perfect: They had already left the party when I arrived.

Past Continuous: We were watching a movie when the power went out.

Past Perfect Continuous: By the time I joined the company, they had been implementing new strategies for increasing productivity for several months.

Past Simple: He scored the winning goal in the final minute of the game.

Past Perfect: The team had already won three consecutive matches before their loss in the finals.