Mam ogromną prośbę czy mógłby ktoś sprawdzić ten tekst pod względem poprawnośći. Będę bardzo wdzięczny. Od razu mówię, że nie jest urodzonym poliglotą ;)
Dear Harry
I sorry for I don't often text to you but I was very busy. Also I must sorry too for I won't pick up you from the airport. You should get in train to Bukowno. I will wait for you when you will arrive.
We will go to the swimming-pool. I wiil teach you how to swim because you never can swim. We will go to the cinema in Cracov too. We will watch "Świadectwo". If you will want we go to play football.
I think you should take a swimsuit, some t-shirts, one shorts, a jacket and some underclothes. That's all. If you will need anything else, I will have it.
I will wait for you.
Best wishes Bartek