PAST SIMPLE Versus PRESENT PERFECT
To talk about things that happened in the past.
To talk about things that happened in the past at a time which is not specified
To talk about things that happened in the past but are important in the present moment.
To talk bout things that started in the past and continue in the present
To talk about finished past actions.
last week/month/year; yesterday; a year ago; at 5 o? clock
ever; never; just; already;yet
