夕阳西下的时候:有关when的问题!

来源:百度文库 编辑:高校问答 时间:2024/05/07 03:52:16
As with other assets,investment in marketable equity securities is recorded,when acquired,at cost,which include the purchase price and incidental acquisition costs such as brokerage commissions and taxes.
这句中when是什么用法啊?为什么要用“,”号隔开啊?

,when acquired,为插入语,它的格式是要求由防灾两个逗号之间,它是一个独立成分,只是有对句子内容补充说明的作用,表示“当。。的时候”

翻译为 当取得时,省略了做主语的人称,加逗号表示停顿了