I told you last time that the pattern and color would change with season.为什么would后面不是be changed表被动吗?

I told you last time that the pattern and color would change with season.为什么would后面不是be changed表被动吗?
I told you last time that the pattern and color would change with season.为什么would后面不是be changed表被动吗?

I told you last time that the pattern and color would change with season.为什么would后面不是be changed表被动吗?
这是个从句,从句中the pattern主语与改变是主动关系,所以不用被动