分类：教育/科学-学习帮助
问题：关于两个句子Shesatdownnexttoagirlherow 
She sat down next to a girl her own age and they soon start talking.What do people my age love to do the most in your country?上面两个句子中her own age/my age的前面为什么不用介词at或者of？是什么语法规则？又如I recognized him the moment he appeared on the stage.一句中the moment前面不加at也是上面一样的原因吗？
回答：She sat down next to a girl her own age and they soon started talking.
What do people my age love to do the most in your country?

上面两个句子中her own age/my age的前面为什么不用介词at或者of？是什么语法规则？
又如I recognized him the moment he appeared on the stage.一句中the moment前面不加at也是上面一样的原因吗？

答:
her own age做 a girl 的定语,所以就不用介词at或者of.
the moment是连词,表示"一......就......"与此类似的还有:"the time""the minute"等."at the moment"表示"在那时"是介词短语,常作时间状语.