英语翻译我们一到火车站，车就开走了。（hardly...when）

We had hardly arrived the train station,when the train went away.
hardly...when的句型用法：
基本用法：S+hardly+did+when+adverbial of time =as soon as
He had hardly had time to settle down when he sold the house and left the country.
这句里面hardly had time 是连接在一起,几乎没有时间.sold和left是两个过去紧密相连动作,卖掉房子就离开了乡村.
所以结合整个句子,翻译时不能硬翻或套用句式翻译.
他几乎没有时间安顿下来,就卖掉了房子离开了乡村.
He had hardly finished the article when the light went out
这句符合句型基本用法

When we reached the station, and the train had already left!

We hardly cought the trian when we arrived at the train station.

The train had hardly gone once we came to the railway station.
~~~嘿嘿，应该没语法错误.