experimented

两者都可表示“试验”。它们的区别在于:experiment指发现未知事物或为认识某事物而进行的试验; test则指按规定的标准,在可控的条件下,对事物进行彻底地检验。例如:

He spend much of the time at his disposal on experiments for technical innovations.他把自己能支配的时间都花在搞技术革新上了。

Tests were carried out on new planes.对这种新飞机进行了数次试验。

experiment on plants 做植物试验

experiment with plants 用植物做试验

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。