用虚拟语气造句（与现在事实相反）

If there were no motorists speeding on highways,there would not be more traffic accidents reported。假设没有摩托车手在公路上超速行驶,那将不会有更多的交通事故。注：条件从句中谓语动词用一般过去式,主句用“would/should/might/could+动词原形”形式,表示对现在不可能实现情况的假想。