they were training to be doctors

问题描述:

they were training to be doctors
为什么

不对,应是被训练
所以是they were being trained to be doctors
绝对正确为什么啊你那里有疑问,请讲为什么过去进行时不行这就是过去进行时were beingbeing是be的进行时,可能不常见请相信我,就是这个答案