Chop oranges into bite size pieces, remove seeds and reserve as much juice as possible.
Place oranges in bowl, add pineapple chunks. Rinse berries, remove stems and add half to pineapple and oranges - gently mix fruit together. Pour fruit juice from fruit mixture into glasses half way. Just before serving, pour gingerale into glasses, filling to just below the top of fruit. Add 3 or 4 berries on top and serve with a straw.