新概念二第56课:Built in 1885,it was the oldest car taking part.It was built in 1885,so it was the oldest car in the race.为什么这句话就是用Itwas built,而不能用built呢?

问题描述:

新概念二第56课:Built in 1885,it was the oldest car taking part.
It was built in 1885,so it was the oldest car in the race.为什么这句话就是用Itwas built,而不能用built呢?