The plan is heard designed so well that we don't hane to make any_英语解答

The plan is heard designed so well that we don't hane to make any changes.
为什么用 designed 而不用to designed
不是be heard to do sth

人气：146 ℃　时间：2020-04-12 13:46:46

解答

因为这里的design是被动语态,被设计
所以应该是be heard （to be） done,
to be省略掉了.