Simple Past – Present Perfect Simple. https://www.ego4u.com/en/cram-up/grammar/simpas-preper.
Use. In British English, the use of Simple Past and Present Perfect is quite strict. As soon as a time expression in the past is given, you have to use Simple Past. If there are no signal words, you must decide if we just talk about an action in the past or if its consequence in the present is important..
[Audio] Without greetings and without beginning with Today: When it comes to past and present tenses, do you want to emphasize the action or the result? The Simple Past and the Present Perfect Simple are perfect for expressing these different meanings. "I bought a new bike." conveys a past action without any relation to the present, while "I have bought a new bike." expresses a past action that has a consequence in the present. Signal words like 'yesterday', 'last', 'just' and 'already' help you distinguish between the Simple Past and the Present Perfect Simple. Come to the end of the presentation. Thank you for listening..