commom,normal和ordinary怎么区别：chief,major,leading怎么区别?

common ordinary general 都含“普通的”意思.
common强调“常见的”、“ 不足为奇的”,如：Colds are common in winter.感冒在冬天很常见.
ordinary强调“平常的”、“平淡无奇的”,如：His ordinary supper consists of only bread and milk.他通常的晚餐不过是面包和牛奶.
general意为“普遍的”、“一般的”,如：This book is intended for the general reader,not for the specialist.这本书是为一般读者写的,不是为专家写的.
mayor只是指市长,如：He is elected mayor
chief 来自法语chef 主要指……长,多用于尊称及名誉中,如
首领,领袖,首长,长官,头目,头子
a chief of state
国家元首
chief of staff
参谋长
leading 侧重于指导；指挥；引导；第一位的,如：He is a leading cadre.他是个领导*.