Я не знаю, о какой конкретной грамматике идёт речь, но я сделал 5 обычных предложений в Past Simple, 5 в Present Perfect, опираясь на то, что я это проходил давно.
5 предложений в Present Perfect:
1) We have never walked together.
2) They have already been to this beautiful country.
3) Somebody has stolen my smartphone in the school.
Is there a table in your room?
Yes, there is a large square table in our room.
Is there a sofa in your room?
Yes, there is a little cosy sofa in our room.
Is there a sideboard in your room?
Yes, there is a big brown sideboard in our room.
Is there a wardrobe in your room?
Yes, there is a big brown wardrobe.
Is there a writing-desk in your room?
Yes, there is a writing-desk in our room.
Is there is a coffee table in your room?
Yes, there is a little round coffee table in our room.
Is there is a bookcase in your room?
Yes, there is a big brown bookcase in our room.
Is there is a wall-unit in your room?
Yes, there is a big brown wall-unit in our room.
Is there is a carpet in your room?
Yes, there is a thick red carpet in our room.
Is there is a piano in your room?
Yes, there is a big black piano in our room
Is there is a TV-set in your room?
Yes, there is a big colour TV-set in our room.
Я не знаю, о какой конкретной грамматике идёт речь, но я сделал 5 обычных предложений в Past Simple, 5 в Present Perfect, опираясь на то, что я это проходил давно.
5 предложений в Present Perfect:
1) We have never walked together.
2) They have already been to this beautiful country.
3) Somebody has stolen my smartphone in the school.
4) I have just had breakfast with my friend.
5) He hasn't eaten at this restaurant yet.
5 предложений в Past Simple:
1) I had an important phone.
2)He jumped on a trampoline.
3)She liked my interesting things.
4)My mom cooked a pancake.
5)Yesterday was Wednesday.