What problem does this girl have that she's jumping to go out with me?

变成陈述句可能是：

This girl has such a terrible problem that she's jumping to go out with me.

This girl has so terrible a problem that she's jumping to go out with me.

其实，即便主句没有程度副词，that 也可引导结果状语从句。

现代英语追求简练，在结果或目的状语中，经常省略 so 或 that（省掉其中之一）。

以下四句，注意其中有什么变化：

1. He was so hard-working that he finally succeeded. （最正宗的格式）

2. He was hard-working so that he finally succeeded. 

3. He was hard-working that he finally succeeded. 

4. He was hard-working so he finally succeeded. （最普通的表达，so 是并列连词表结果）