求助曼哈顿语法的一道课后习题

杀G之旅

Well-informed people know that Bordeaux is a French region whose most famous export is the wine which bears its name.  书上解释说which后面的内容是修饰wine，所以incomplete?这是什么意思呀？就算把whose之后的内容全部去掉，从句也是完整的呀，哪里不完整了？
它给的正确答案是： Well-informed people know that Bordeaux is a French region whose most famous export is the wine that bears its name. 为什么改成that 就可以了呢？
求大神指教！！！！

杀G之旅

Monica2020 发表于 2019-8-6 21:16
讨论帖1：https://forum.chasedream.com/forum.php?mod=viewthread&tid=1349798&page=1#pid24812166

谢谢你！！！！            

Monica2020

讨论帖2:https://forum.chasedream.com/thread-888348-1-1.html

Monica2020

讨论帖1：https://forum.chasedream.com/for ... ;page=1#pid24812166