When I told her the air would be hard to breathe and it would be very cold,she said it would be an interesting experienc

问题描述:

When I told her the air would be hard to breathe and it would be very cold,she said it would be an interesting experience
句中的三个would有什么用法

都是因为前面主句是过去式呀
从句里的will变为 would