He had been confined to the box.为什么要加to呢?
问题描述：
He had been confined to the box.为什么要加to呢?
我查了一下confine是及物动词,那为什么直接he had been confined the box呢?
答
be confined to the box,英语词组,意思是被关禁闭.（被动形式}
confine sb to the box关某人禁闭.（主动形式}