I am going to discuss this matter （）（far）with your parents 词形变化...

further
区别farther与further
farther与further都是形容词和副词far的比较级，但是用法上却有很大区别。
farther 强调有形的、具体的事物，如
1. On the farther side of the steet there was a large shop.
2. We can't go any farther without a rest.
further 侧重于无形的、抽象事物，如
1.Have you any further questions to ask? 你们还有问题要问吗？
2. We intend to stay for a further two months. 我们打算再停留两个月。
3. If you need further information, I suggest you go to the library. 如果你需要进一步的资料，我建议你去图书馆查查。
4. We'll enquire further into this question tomorrow. 明天我们将进一步调查这个问题。

further 我将会进一步的同你的父母探讨这个问题。

farther 进一步的
请及时采纳,多谢!