undergo, experience, experiment, suffer, sustain
这组词共同的意思是“经历”。它们的区别是：
1.experience指人们“经历”过的事情,即生活中所遇到的事情或通过学习、实践取得经验的过程; experiment指科学家进行的试验或为了检验某种效果而进行的任何活动; suffer指体验到伤害和困苦; sustain指遭受苦难,但不一定有勇气或坚忍精神; undergo强调被迫经受不愉快的事或苦难,也可指经历时间。例如:
The Chinese people have experienced untold sufferings under imperialist oppression.在帝国主义的压迫下,中国人民遭受了无数的苦难。
They experimented on electricity.他们做电学实验。
He seemed to have suffered a great deal.他好像受了很多苦。
He has sustained a great loss by the death of his father.父亲死了,他遭受了巨大损失。
He undergoes hardships.他备尝艰难。
2.experience通常与动词have连用,而experiment通常与动词do连用。
undergo，experience，sustain，suffer
这些动词均有“经历，经受，遭受”之意。
undergo多指经受艰难、痛苦、不愉快或危险等事。
experience指亲身经受或体验某事。
sustain指遭受痛苦或承受负担。
suffer常可与sustain通用，尤指受到损害或伤害。
