permit符合"辅元辅",为什么不双写t再+ing?

permit符合辅元辅,为什么不双写t再+ing? 动词变化permit的过去式为permitted,wait的过去式为什么是waited,为什么不双写t? allow与permit区别school do not ----smokinga.allow b.permit 为什么选b啊 The party will be held in the garden,weather____A.permitting B.to permit为什么选permitting,而不选to permit,(to permit不是也可以表示主动吗?).到底怎么理解呢? residence permit什么意思 permit的名词是什麽? permit sb to do permit doing sth.造句 permission 和permit 作名词时的区别DO YOU HAVE ANY -------TO DRIVE?为什么不能用permission access-list 1 permit 10.92.1.0 0.0.0.为什么我在联通adsl路由器配置上都看到了这个 Students are not _______ (permit) to eat or drink in class.填什么?为什么?O(∩_∩)O谢谢 英语1.Time_______,I’ll go on a picnic with you this Sunday.1.Time_______,I’ll go on a picnic with you this Sunday.a.permit b.to permit c.permitted d.permitting为什么 【求助】____this instrument should have put its work permit number____this instrument should have put its work permit number on the box.A.Whoever inspected B.No matter who examined选A 为什么呐?这两个 有什么区别? 什么时候用permit to do什么时候用permit doing? permit doing 与permit to do详细区别 permit doing和permit to do 怎样区分? limited residence permit和unlimited rensidence permit是什么意思 为什么所有矢量都符合平行四边形定律?