星期五小means it is a working day ；星期五大 means rest day off.Do U CLEAR?

Hm, I'm not a fluent speaker of Mandarin, but I have never heard of those phrases and they don't make sense. For starters, 星期五 means "Friday". 星期 meaning "week" and 五 meaning "five" (the fifth day of the week is Friday). 小 means "small" and 大 means big. So together: "Friday-big" and "Friday-small"..it doesn't make much sense.

在體積、面積、容量、數量、強度、深度、力量、年紀、程度、地位等方面超過一般， 或超過比較的對象。與「小」相對而言。 如：「大山」、「大河」、「大雨」、「眼睛大」、「力氣大」、「雷聲大，雨點小。」、 「年紀大」、「官大學問大」、「大風大浪」等。 我猜測 應該是 : 星期五(在) 前, 星期六 (在) 後 另有 : 一月大 二小 三月大 四月小, 意指一至四月各有 31, 28, 31, 30天, 31天稱大月 餘稱小月 選擇良好的教材 有助於學習 "三腳貓"編輯會讓你走許多冤枉路 臺灣的教材 免費下載 http://edu.ocac.gov.tw/interact/ebook/digitalPublish2/cn500/index.htm

Hi, dear Katya. I never heard of the phrase "星期五小" or "星期五大". Could you please give us a compleate sentence about it? Maybe we can understand the usage of "小" and "大" at that time. :)

sorry,we never say 星期五小 or 星期五大，小 usually means the size is small, 大 means the size is big opposite of 小。