Which made it sound even more natural than just a regular ending statement.

这使得它听起来比常规的结束语更自然。

He described a way of speaking called " uptalk, " when speakers end statements with a rising tone.

他描述了一种被称为" 升调" 的说话方式，也就是说话者在陈述结束时用上升的音调结束发言。

So the rule is that when something is left out at the end of a statement, you cannot end the statement with a weak form.

所以这个规则就是，当一个陈述句末尾省略了一些内容时，你不能用一个弱读式来结束这个陈述句。