For men accustomed to eating seven-course dinners and sleeping between fine linen sheets at home ,the change to the alps must have been very hard inded.这句话里change的前面为什么要加the呢?

For men accustomed to eating seven-course dinners and sleeping between fine linen sheets at home ,the change to the alps must have been very hard inded.这句话里change的前面为什么要加the呢?
For men accustomed to eating seven-course dinners and sleeping between fine linen sheets at home ,the change to the alps must have been very hard inded.这句话里change的前面为什么要加the呢?

For men accustomed to eating seven-course dinners and sleeping between fine linen sheets at home ,the change to the alps must have been very hard inded.这句话里change的前面为什么要加the呢?
特指后面Alps所发生的改变

特指，强调