christmas 系用on定系in

其實如果講「整個節日」，如 Christmas、Easter 等等，應該用 at

但如果講「整個節日的其中一天」，如 Christmas 的 Boxing Day、Christmas Eve 等等，那就應該用 on

希望幫到你。

2013-08-03 19:24:05 補充：
由於整個 Easter 只得一天，所以用 「on Easter」也未嘗不可。

Do you believe in Christmas?
In Christmas, people in the world celebrate regardless of their belief.

"Put the Savior back in Christmas," people cry. But was He ever there in the first place?"-http://www.yaiy.org/literature/IsChristmas.html

首先要說明，並不能in Christmas

若要用，則用at或on皆可，但其意思不同

用at是指整個假期
但用on就是指１２月２５日（聖誕節那日）

希望幫到你！

我剛剛作文學架!用 AT!

I will be on vacation during Christmas.

I will be having a candle light dinner with my sweetheart on Christmas Eve.

I wish to buy a nice dress for Christmas.

I will be shopping for Christmas on Sunday.

The Christmas holiday;
Merry Christmas.
In the festive season of Christmas;
On Christmas.