I slipped on the stairs and fell down,___ breaking my leg

I slipped on the stairs and fell down,___ breaking my leg 怎样判断这个词是做介词还是副词比如She slipped and fell down the stairs,hurtin I slipped on the ice and fell over. I slipped on some damp leaves,fell out,scratched my arms and I let go of the window seal and fell back down on to my hand 英语翻译"slapped her and she slipped and fell down in the water" —I fell down from the tree.I think my leg is broken.—Oh!I __ as i was getting on the bus ,i slipped and hurt my foot 这句话是 as i was getting on the bus ,i slipped and hurt my foot 这句话为 As I was getting on the bus ,i slipped and hurt my foot. I caught the baby in time before he fell down the stairs. 英语填空：I fell down and got （） on the head,oh,my head is （） ver