On is Ok in your case?

 

1on Listen to audio/ˈɑ:n/ preposition

15used to indicate an activity that someone did or is now doing She did well on the exam/test. The band is currently on tour. He is off/away on a trip/vacation. She is on a diet. The officers are on duty.

 
 
 
 
 
 
 

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不知道啊,別人都用at,找到用在ceremony的前的都是用的at -jennea- 給 jennea 發送悄悄話 jennea 的博客首頁 (0 bytes) () 09/14/2011 postreply 19:47:06

我也隻找到短語 "stand on ceremony"。 -EnLearner- 給 EnLearner 發送悄悄話 EnLearner 的博客首頁 (0 bytes) () 09/14/2011 postreply 19:55:19

dict.cn 上查ceremony -jennea- 給 jennea 發送悄悄話 jennea 的博客首頁 (328 bytes) () 09/14/2011 postreply 20:06:28

"stand on ceremony" 在"On Etiquette"那一課裏就有了。 -EnLearner- 給 EnLearner 發送悄悄話 EnLearner 的博客首頁 (0 bytes) () 09/14/2011 postreply 20:19:55

那時沒意識到還可以做 “別客氣” 講。 雖說日常生活沒聽過。 -jennea- 給 jennea 發送悄悄話 jennea 的博客首頁 (63 bytes) () 09/14/2011 postreply 20:27:20

吃,吃, 吃。。。 lol -EnLearner- 給 EnLearner 發送悄悄話 EnLearner 的博客首頁 (0 bytes) () 09/14/2011 postreply 20:31:27

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