he is a man （to be）loved by all为什么省略to be?

he is a man （to be）loved by all为什么省略to be?
he is a man （to be）loved by all为什么省略to be?

he is a man （to be）loved by all为什么省略to be?
因为不影响原文意思,而且更简洁.同一个意思,用更简洁的话说出来,这不就是语言吗?
而且,
he is a man to be loved by all 就已经省略了,原句应该是
he is a man who is to be loved by all.