Dobra, jeszcze raz, tylko czytajcie uwaznie ;-))
1) I spent the last 10 days at my grandmother's. I HELPED HER (to) collect eggs.
Ostatnie 10 dni spedzilem u babci. POMOGLEM JEJ w zbieraniu jajek.
2) I spent the last 10 days at my grandmother's. I WAS HELPING HER (to) collect eggs (and she was helping me with my English)
Ostatnie 10 dni spedzilem u babci. POMAGALEM JEJ w zbieraniu jajek, (a ona mnie w angielskim)
3) I spent the last 10 days at my grandmother's, HELPING HER to collect eggs.
Ostatnie 10 dni spedzilem u babnci, POMAGAJAC JEJ w zbieraniu jajek.
4) Pomagalem jej zbierajac jajka.
I WAS HELPING HER BY COLLECTING EGGS.
Is it clear now? ;-))