一条长难句

问题描述:

一条长难句
But for many,the fact that poor people are able to support themselves almost as well without government aid as they did with it is in itself a huge victory.请问这句话的主从结构,特别是as they did with it is in itself a huge victory.这里,did和is都是谓语动词,怎么回事?

but for many ,the fact that [ poor people are able tp support themselves almost as well without government aid as they did with it] is in itself a huge victory括号内的就是从句.其中从句内有一个词组,as ...