7. Perfect vs. Simple 2

Use these with specific finished times: - Ago: 2 days ago. - Last: Last week, last year. - In: In 2012, in July. - When: When I was young...

Use these with unfinished/unspecific times: - Just: Very recent. ("I have just eaten") - Already: Sooner than expected. ("I have already finished") - Yet: Questions/Negatives. ("Have you finished yet?") - Since: Start point. ("Since Monday") - For: Duration. ("For 2 years" - also used in Past Simple, but implies connection to now)