But two years later I felt what smoking was doing to me.

问题描述:

But two years later I felt what smoking was doing to me.

言外之意是:
可两年之后,我深深地感受到吸烟对我的害处.
祝你更上一层楼,有不懂的可以再问哦be doing to sb.是一个短语吗?嗯可以的意思是:对某人做了什么