I really very much like you, but why don't you und.

我真的非常喜欢你,但你为什么不明白呢?

句子有问题

原句应该是:I like you very much,but why don't you understand?

或:I really like you,but why don't you understand?

翻译：我真的非常喜欢你，但你为什么却不明白？

这个句子是不是没写完啊?应该是I really very much like you, but why don't you understand?
我非常喜欢你,但你为什么不明白呢

应该是I really very much like you, but why don't you understand?

应该是这个解释

首先,我想跟你讲一下UND不是英语单词,不过前面那句的意思是,我真的很喜欢你,你先搞清楚UND是不是你写错了,

我真的非常喜欢你，但是为什么你不接受我。
und = undertake me