265　experience，experiences和experienced

① experience表示“经验，体验”时，是不可数名词。

He has much experience in teaching. 他很有教学经验。

We should learn by experience. 我们应该吸取经验教训。

② experience表示“经历，经历的事情”时，是可数名词。

The big fire was a terrible experience. 那场大火是一次可怕的经历。

He can not forget those sad experiences. 他不能忘记那些悲惨的经历。

③ experienced既是experience的过去式和过去分词，也可用作形容词，意为“有经验的”，可作定语或表语。

She is an experienced teacher. 她是一位有经验的教师。

She is experienced in doing this kind of work. 她做这类工作有经验。