skiing, while skiing
Mi sono rotta la gamba sciando.
I broke my leg skiing.
Tom stava sciando.
Tom was skiing.
Si è rotto il braccio sciando.
He broke his arm skiing.
Mary si ruppe la gamba sciando.
Mary broke her leg skiing.
Stava sciando.
He was skiing.
Si è rotto la gamba sciando.
He broke his leg skiing.