问题补充:
The machine has been made easier for it
答案:
这样理解比较简单:
1.The machine is easy to operate.
2.The machine has been made easier for it (指machine.是被操作的) to be operated (被动)
3.The machine has been made easier for people (人.操作) to operate..(主动)
======以下答案可供参考======
供参考答案1:
be+ adj. +to be done不定式的被动结构 这个机器被制造,操作起来很简单。