Third Conditional
Disney lived on a farm. He drew wonderful cartoon animals. ( might )
If Disney hadn'l lived on a farm, he might not have drawn wonderful cartoon animals.
He sold candy to train passengers as a boy. He loved model trains as an adult.
( might )
If he hadn't sold candy to train passengers as a boy, he might not have loved model trains as an adult.
His friend Ub helped him buy a suit. Disney,who was shy,met his fiancée´s parents.
( could )
If his friend Ub hadn't helped him buy a suit,Disney,who was shy,couldn't have met his fiancée´s parents.