2 Complete the rules with present perfect or past simple. 1 We use the a with words and phrases like yesterday, ago, last year, in the holidays. b with words like since, already, yet, just, ever. 2 We use the a to talk about an action that began in the past but continues into the present. b to talk about someone's general life experiences. c to talk about an action that finished in the past. d to talk about an action that finished in the past, but the result is important or interesting now.