三年前我遇到Mary,那时她在一个店里工作 英语翻译

自己下个有道词典又有语音翻译又有文字翻译

标准翻译如下：
I met with Mary 3 years ago when she worked in a store.
这里的when引导的从句做时间状语。
希望能够帮到您。

Three years ago I met Mary, she was in a shop.

I met Mary three years ago,she worked in a store at that time.

She worked in a retailer store when I met Mary three years ago.
I met with Mary in a store where she worked three years ago.
Definately,She worked terriblely when I suddenlymet with Mary in a luxury department store,three years ago.