这句话对吗The situation is easy to change if you take my advise.这是书上的一句话.不用被动语态吗?

不用被动，不定式作宾补有被动的意思

不用被动语态.
这种前面有形容词,表宾补的不定式不用被动,但可表示被动关系,例：
The question is easy to work out.
而不说：the question is easy to be worked out.
The book is difficult to understand.
而不说The book is difficult to be understood.
这种句子并不是被动结构,所以不需要用被动语态.