'To fall from a tree' = spadać z drzewa
'I fell from a tree' = ja spadłam/spadłem z drzewa
'I am falling from a tree = jestem w trakcie spadania z drzewa/spadam z drzewa
'he fell from a tree' = on spadł z drzewa
'she fell from a tree' = ona spadła z drzewa
'they fell from a tree' = oni spadli z drzewa
'he/she/they will fall from a tree' = on/ona/oni spadnie/spadną z drzewa