Soon after we arrived,we(were taken)on a tour of the city

问题描述:

Soon after we arrived,we(were taken)on a tour of the city
请教这里的were taken 为什么要用被动呢?
如果改成主动的话,应该是怎么样的?

take sb.on a tour of ...携带某人旅游...;带领某人参观...
由于这里没有没有明说是谁带这旅游的,所以就用了被动形式.如果改成主动式:
...,(they) took us on a tour of the city