in the beijing olympics和at a single olympics介词为什么不同

为什么in the beijing olympics中olympic是复数,而at a single olympic? The 2008 Olympics will be held in Beijing.为什么Olympics要加s? In recent years (the) beijing Olympics Games are becoming (a 英语作文《The Olympics Games in Beijing》 The Beijing Olympics has been a great ----------,----------- Many Chinese shed tears at the Beijing Olympics Opening Cere Many world records were＿＿at the Beijing Olympics.A.happened 句子The marathon is the longest race at the Olympics.中的介词怎么是用a 英语翻译“在奥运会上”是用at the Olympics 还是in the Olympics 还是两种都可以? Is table tennis played____to the olympics?A at B on C in D f the slogan of the Beijing Olympics is No one won eight gold medals at a single Olympics before Phe