Learn English - Past simple & present perfect - I did, i have done

Hello. In this video we look at two ways of thinking about the past: first of all, what happened in the past, and secondly rather different, how does what happened in the past affect the present? I hope you find it useful! So let's start off with a timeline, and this time it's 'yesterday', 'early this morning', and '11am today'. I'm just going to write 'now' here... 'now'. So that's now, it's 11 o clock in the morning now. What happened yesterday? Let's start working through our little story. Here we've got Sally, who's got a lot of boxes, she had a lot of boxes yesterday, and was doing things with them. What did she do? She labelled all the boxes. That happened yesterday. So it's all finished, all done. I wonder why. In addition to the boxes, she did something else earlier this morning. What did she do earlier this morning? There's the cat, and what she did earlier this morning was... She put the cat in her basket. She put the cat in her basket. Both of those things happened in the past. Now it's 11 o clock in the morning, and what's happening now? Ah, the moving men have arrived, and there are the boxes, and the cat in her basket, all ready to go, and what's she saying? What's Sally saying? She's saying, "I've labelled all the boxes." She's using the present perfect there, "I have labelled", whereas yesterday we said, "she labelled all the boxes." The reason why she's using the present perfect now is because now they're ready to go, so it's important now that the boxes all have labels, so that when they get to the other end, they can distribute them properly. And the same is true of the cat: she's saying "I've put the cat in the basket" because it's important to know where the cat is now because the cat's not going to be very happy with the move, and may try to run away. So let me just summarise that in a chart here, here we go. So when you say "I did it" you're looking at the past event, you're looking at when it happened. And when you say "I have done it", you're looking at an effect of the past event in the present, "here it is". All right, that's all, bye for now!