英语单词：quiver quake 和 shudder 都有“发抖”的意思，其区别和具体用法是如何？

在程度上, quake最弱,几乎难以觉察

His insides quaked at the thought.想到这一点,他心里就发慌。

quiver 暗指轻微的、快速的、震颤的运动

She tried to steady her fingers, but they quivered uncontrollably.她想稳定住自己的手指,但它们不由自主地抖动不已。

Shudder 主要指由于恐惧、恐怖或心情的突变引起的骤发性震动

I shudder to think what would have happened if he hadn't acted as quickly as he did.

我不敢设想如果他没有反应那么快的话会发生什么事。