为什么at mid-autumn用at而on May day用on?

为什么at mid-autumn用at而on May day用on? 英语中的中秋节是用on 还是at?是on Mid-autumn Festival还是at Mid-autumn Festival?为什麽?讲清楚点. what do many people ____ at mid Autumn Festival?为什么横线里要填does? we can look at the moon--------- the mid-autumn fesyivl A in B on c at 选啥为什么快 what do you do at Mid-Autumn Festival?英语不好真麻烦!...是用英语回答 We eat mooncakes at Mid Autumn Festival.用改写为选择疑问句 who do Chinese people often talk about at mid - autumn festival?用英文回答 what do many many people ____ at mid Autumn Festital? 横线上为什么要填does? 帮个忙! 谢谢! what do you do ()the Mid-Autumn Day in Beijing.A to B at C for D in.要说为什么? What ____people uaually ____(eat) at Mid-Autumn Festival用所给动词的适当形式填空 People in C usually eat moon cakes at Mid-Autumn FestivalPeople in C_____ usually eat moon cakes at Mid-Autumn Festival. What traditional food do you ( )eat at the Mid-autumn Festival?kuai a people often eat moon cakes at the mid-autumn festival 改为被动语态 what do you often do at the Mid-Autumn Festival什么意思 Many people eat mooncakes at Mid-Autumn Festival（对mooncakes提问） People usually eat moon cakes at Mid-Autumn Festival.(对画线部分 eat moon cakes提问) what does the moon look like at night on mid - autumn festival? They eat ----moon cakes--- at Mid-Autumn Festival 对划线部分提问