分类：教育/科学-外语学习-英语考试
问题：请教高一英语Itwasarainysundayeveningth 
It was a rainy sunday evening that he met her.
请教句中为什么用that而不是用 when?谢谢!
回答：因为是It was 开头，it is/was...that是强调句的固定搭配