Police confirmed that the murder weapon has since been discovered in a nearbgood news!Police confirmed that the murder weapon has since been discovered in a nearby lake.为什么前面是过去式 confirmed 而后面不是过去完成时?而是has?
问题描述：
Police confirmed that the murder weapon has since been discovered in a nearb
good news!Police confirmed that the murder weapon has since been discovered in a nearby lake.
为什么前面是过去式 confirmed 而后面不是过去完成时?而是has?
答