为什么不用动词原形?The room is large enough to hold twenty people.hold为什么不用held

为什么不用动词原形?The room is large enough to hold twenty people.hold为什么不用held 关于face的用法用正确形式填空.i need a room with windows______(face) the sea.face在这里做动词,有面对,面向的意思.答案是facing为什么face要用现在分词,而不用原形呢 I saw him go out of the room.(第二个动词go为什么不用过去式..谢) 动词过去式后的动词怎么弄?如：I helped him clean the room,为什么clean不用变? sometimes I have no choice but to cut off the electricity when my computer crashes.为什么要用crashes? 为什么不用动词原形? sometimes I have no choice but to cut off the electricity when my computer crashes.为什么要用crashes?我的意思是为什么不用动词原形 为什么不用should +动词原形的啊I think it's high time we turend our attention to the danger of drunk driving . I make him clean the room这句话有语法错误吗?还有“make sb.动词原形 sth”对吗? let's go running祈使句为什么不用动词原形 请问let后跟动词原形,还是动词不定式可是这句却用的是不定式：Six girls are let to come in the room each.为什么 请问let后跟动词原形,可是这句却用的是不定式：Six girls are let to come in the room each.为什么 i want to book one room.为什么不用a room I wanna make him understood这里understood为什么不用原形 The doctor did what he could ( ) the dying man.此句中情态动词could后为什么不用动词原形而是不定...The doctor did what he could ( ) the dying man.此句中情态动词could后为什么不用动词原形而是不定式结构呢? 终止性动词Entering the room, I found nobody in. 为什么found不加ing... All but one ____ here whn I entered the room.为什么用were,不用was does后动词原形问题does their father takes them to school every day 为什么不用原形,要用takes 为什么这里用动词原形?He had left the window (open)when he went to bed.用了open却不用opened?