i have found it important that

Question

I have found it important that a new rule() set up ban smoking in room
如题老师说填原型is,但是is的原型不是be么,为何不填be呢

Answer 1

I have found it important that a new rule() set up to ban smoking in room.
老师说得对,这里填is.is的原型是be.因为that引导的【宾语从句里的主语 a new rule】是【第三人称单数】,第三人称单数的一般现在时的be动词就用is,所以是【is】 set up to ban smoking in room.