my tongue was busy searching out the hole where the tooth had been.这里最后的had been,
问题描述：
my tongue was busy searching out the hole where the tooth had been.这里最后的had been,
为什么不用had done.这的 the hole where the tooth had been翻译是：刚拔掉的那颗牙的伤口,怎样理解这句话
答
我老是用舌头去舔刚刚被拔掉的牙齿的牙洞.
the whole where the tooth had been 原先牙齿在的那个洞,所以一定不能用had done为什么不能用done,要用been ,你等于什么都没说the tooth had been in the hole----那颗牙齿原先在那个洞里，后来被拔掉了----牙齿在洞里，动词是be，而不是do句子原来就是had been啊，希望对你有启发为什么要省略in the hole,句中：the hole where the tooth had been，其中where the tooth had been是定语从句修饰the hole 明白了吗？因为是定语从句，加上in the hole就有点多余了in the hole 是为了说明这里是用been，而不是done,还原而成的句子：the tooth had been in the hole，原句（the hole where the tooth had been）中已有the hole，无需加in，只是后跟一个定语从句来补充说明the hole 看来我的表达能力需多锤炼，希望可以帮到你