第1个回答 推荐于2017-09-05
Idea 一词词意最为广泛：
Fruit is not her idea of a dessert.
水果不是她所想要的甜点.
Don't get any ideas about revenge.
不要想着报仇.
“Human history is in essence a history of ideas” (H.G.Wells).
“人类历史本质上是一部思想史” (H·G·威尔斯）.
Thought 一词是指明显的智力活动,特别是指经过思考和推理后得出的结论,与单纯的观察、感觉或愿望不同：
Quiet—she's trying to collect her thoughts.
静悄悄地--她正努力集中着自己的思想.
I have no thought of going to Europe.
我不想去欧洲.
“Language is the dress of thought” (Samuel Johnson).
“语言是思想的外衣” （萨缪尔·约翰逊）.
Opinion 常用于法院判决,尤其指个人的判断,它基于一种根据,这种根据不足于排除可能的争论：
It is wise to seek a second medical opinion before submitting to surgery.
在决定做手术之前再寻找另外一种手段是聪明的做法.
“A little group of willful men,representing no opinion but their own,have rendered the great Government of the United States helpless and contemptible” (Woodrow Wilson).
“那些只代表他们自己的意见而不是其它公民意见的一小撮人,已经使伟大的美国政府处于一种无助和被人小瞧的地步” （伍德洛·威尔逊）.
Mind ,泛指思想、知觉、记忆和决断的能力：
“No passion so effectually robs the mind of all its powers of acting and reasoning as fear” (Edmund Burke).
“没有一种感情能象恐惧一样可剥夺头脑的所有行为和思考能力” （埃德蒙·伯克）.本回答被提问者和网友采纳