安检人员承认，在那个包裹被送进来之前，并没有经过任何检查。
The security staff admitted that the package hadn't been checked before it was brought in.
▼点击显示答案
hadn't英 /ˈhædnt/|美 /ˈhædnt/
been英 /biːn/|美 /bɪn/
checked英 /tʃekt/|美 /tʃɛkt/
解释
hadn't been checked 是过去完成时被动否定。hadn't = had not，been checked 构成被动语态，表示在被带入之前的未检查状态。
The security staff admitted that the package hadn't been checked before it was brought in.
hadn't been checked 是过去完成时被动否定。hadn't = had not，been checked 构成被动语态，表示在被带入之前的未检查状态。