英语高手进句子中的I told everybody that he played basketball for Cana

谁说一定要用at呀?
Torrence expects to defend her title successfully in the next Olympics
This Saturday the British star is going for gold in the Winter Olympics.
If I could just make another small point about the weightlifters in the Olympics
都是字典里的例句,用at的也不少.
She won the individual gold medal at the Winter Olympics.
My only aim is to represent Britain at the Olympics.
She was just 14 when she caused a sensation at the Montreal Olympics.
to楼主:那就是他们乱说!
以上的例句全部选自Collins cobuild英语词典.
Collins Cobuild是字典与英语学习书的知名品牌,《Collins Cobuild Advanced Learner's English Dictionary》一直是世界各地读者心中的最佳字典之一,甚至被誉为“现代英语最全面、权威的向导”.多国畅销书《千万别学英语》中也特别推荐《Collins Cobuild Advanced Learner's English Dictionary》.
的确是推销呀,建议楼主到www.***.com去下载一个免费的光盘镜像回来.这本字典出错的可能性应该比你们老师和那个什么全解出错可能性要小很多.

in+时间段[eg:一个周里，一个世纪里]
at+时间点[eg:节假日]
所以用in

谁告诉你要用at的？
确定吗？
我觉得就是用in