[ihavenotgotanyscore]新概念281课有句话倒数第五行那个1、theofficersgotoutandtheprisonerstoodtoattentionandsaluted(as)theypassed.此句中as能否用when代替?做“当····时候”讲时as和when有无区别

Question

[i have not got any score]新概念2 81课有句话 倒数第五行那个
1、the officers got out and the prisoner stood to attention and saluted (as) they passed.
此句中as 能否用when代替?做“当····时候”讲时 as和when有无区别呢?
2、(when)they had gone,the driver of the car came towards him.
此句我脚着when应该用after啊?过去完成时不是“过去的过去”吗?咋用了when还敢用had gone这个典型的过去完成时呢?

Answer 1

此句中as 能用when代替,但前者是“当...时”,强调两个动作同时发生；而when是“当····时候”.
(when)they had gone,the driver of the car came towards him.
此句when是“在...时间之后”,可以用after代替的.