experience and experiences 在用法上有什麼區別？
1. experience 作為不可數名詞:
經驗, 體驗[U][(+of/in)]
When using experience as an uncountable noun, you are referring to the knowledge and skill that you have gained through doing something for a period of time.
當「 experience」作為不可數名詞時，它指的是你透過一段時間做某件事所獲得的知識和技能。
例如：
•Have you had any experience of teaching English?
你有過教英語的經驗嗎?
•I have 11 years of experience in teaching. My wife has 20 years of experience in shopping.
我有11年的教學經驗。我的妻子有20年的購物經驗。
2. experience(s) 作為可數名詞:
經歷, 閱歷[C]
When using experience as a countable noun, it is an event that happens to you or that you are a part of.
當「 experience」作為可數名詞時，它指的是發生在你身上或你參與的事件。
例如：
•Studying in France was a wonderful experience.
在法國學習是一次美好的經歷。
•Please tell us about your experiences in Africa.
請跟我們談談你在非洲的經歷。
•I had a rather odd experience the other day.
前些天我有過一次相當奇怪的經歷。
When using experience as a countable noun, you are referring to an event or activity that affects you in some way.
當使用「 experience」作為可數名詞時，同時也是在指一種以某種方式影響你的事件或活動。
例如：
•I had a very unusual experience today. I took my wife to SOGO, but she didn’t buy anything.
我今天有一個很不尋常的經驗。我帶我妻子去了SOGO，但她什麼都沒買。
3. experience 也可以當做動詞用
經歷；體驗 (v.)
if you experience a problem, event, or situation, it happens to you or affects you
如果你「 experience」一個問題、事件或情況，那就意味著這個情況發生在你身上或影響到你。
例如：
•Taiwan has experienced a sharp deceleration in economic growth since the late 1980s。
台灣自1980年代末以來經歷了經濟增長的急劇放緩。
•Eric will experience (v.) a fate worse than death if you tell his wife about his example sentences.
如果你告訴Eric的妻子關於這些例句，他將經歷比死還糟的命運。
•He experienced intense sadness when his pet died.
他在他的寵物死時經歷了強烈的悲傷。
資料來源:
http://oald8.oxfordlearnersdictionaries.com/dictionary/experiences#experience_1