Réponse :
When I looked round he was taking taking my bicycle away
He was going up the stairs when he heard a scream
I was walking along a deserted road. suddenly I saw a big dog
Yesterday Mr Jones left home at ... He was wearing black jeans
While I was buying a newspaper alice came into the shop
I met Betty. She was talking ...
Explications :
preterit: s utilise pour relater un événement du passé
preterit progressif: s emploie pour décrire des circonstances du passées, qui ne continuent pas l essentiel du récit:
par exemple: I was chatting with a friend (circonstance) when he interrupted me (événement du recit)
preterit progressif peut traduire l expression "en train de"
J espere que tu as compris :)