simple past versus present perfect

One way is to use keywords, PP matches for, since, ever, yet, how long etc. Past tense matches yesterday, last month, last week, two days ago.

It's an easy way for them to get the concept and you can go on to use dialogues for practice.

Thank you so much

Thank you for your assistance

i need some materials like flashcards and games to teach simple past vs past continuous

angela gabriela wrote:i need some materials like flashcards and games to teach simple past vs past continuous

you have plenty of those already given on this site
just ask for the links

Thanks a lot! it will be very useful:

Here are two links from my site. One explains the present perfect used with the past tense.

Present Perfect Tense (Experiences) | Heads Up English | ESL Lessons

The second link explains the present perfect with "for" and "since."

Prepositions (for & since) | Heads Up English | ESL Lessons

I hope these help!

This is always a challenge for students but I have created these exercises that help to give practice. There are several reasons why we use the present perfect and not past simple and vice versa, but this cannot be cleared up in one lesson you need practice.
Try these:
Printable Games for present perfect vs. Past Simple
Wheel Game
There are interactive games on this page on the subject.

The most common reason for using the present perfect is to talk about actions that started in the past but have relevance to the present and may not be over in the near future. For example:
"I have lived in China for 6 years."
But if I said: "I lived in China for six years."
This suggests an end to living in China. The action has stopped in other words. But by sayig: "I have lived in China for 6 years.", I am suggesting that the action is not over.

But that is not all. Using EVER and NEVER we can form the present perfect to talk about things that may have happened in the past, but we may not be too keen on when it happened. All we are interested in knowing is whether it happened. For example: "Have you ever been to China?". ANSWER: "Yes, I have been to China several times." If I am interested in time in the past, I will use the past simple: "When did you last visit China?" ANSWER: "I visited China last year."

We also use the present perfect with words like JUST, ALREADY, YET as in these examples:
"He has just arrived."
" I have already eaten dinner."
"I haven't eaten dinner yet."

The reason why it is called PRESENT PERFECT is that the present is perfectly connected to the past and possibly the future. But to include future will be leading us to PRESENT PERFECT CONTINUOUS, which is another one.

The PAST SIMPLE is for actions that are over.

Hope this helps!

Here are some of the things I use for this comparison. I hope it'll help you.