normal,common,ordinary,usua,怎么区分

Normal common ordinary usual的区别
normal ordinary
都含“正常的”、“正规的”的意思.
normal指“正常的”、“正规的”、“常态的”,如:
the normal temperature of the human body
人的正常体温.
ordinary指“平常的”、“普通的”强调“平常的”、“平淡无奇的”,如:
an ordinary day's work
日常工作.
His ordinary supper consists of only bread and milk.他通常的晚餐不过是面包和牛奶.
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.
usual:
(1) adj.平常的；通常的,惯常的 = normal,happening often
[例句]
Twelve o'clock is the usual time to have lunch.
十二点通常是吃饭的时间.
It's usual to have a holiday in the summer.夏天休假是惯例.
It can't move about in the usual way.
它不能象平常那样到处活动了.
as usual:as always 跟往常一样,象平常一样
Tony arrived late,as usual!托尼还是同往常一样迟到了!