As soon as Iwas on board ,I began to have second thoughts about leaving.

热心网友

我一上船/上飞机,就开始不想离开了。

热心网友

当我在船上时,我就想离开了

热心网友

我一参加董事会(board),就开始想再一次离开。结合上下文,会更清楚这句的意思。

热心网友

当我一踏上船的那一刻,我开始动摇了。(言外意是不想离开)