新概念英语二册45课Ithadbeenwrappedupinnewspaperanditcontainedhalfthemoneyhehadlost
为什么这里Ithadbeenwrappedupinnewspaper要用过去完成时而这里又要用itcontainedhalfthemoney要用过去式?过去完成时的动作不是早于过去式吗.可是两个动作看不出先后来啊