the computer programs a company uses to estimate relationships may be patented 帮忙分析下主谓宾
问题描述：
the computer programs a company uses to estimate relationships may be patented 帮忙分析下主谓宾
这个a company uses to estimate relationship不是对computer program的同位语吗？为什么不加that
答
应该是a company uses to estimate relationships 是the computer programs的后置定语一个完整的句子也可以做后置定语的说？说错了。。。是定从，省略that定语从句不是that做宾语才可以省略吗？这里面他又没做宾语的说？这个地方如果我没看错应该是a company uses (the computer programs)to estimate relationship，有宾语的啊~但是题目里面省略掉了