the bus ------,we walked across the street.a.stopped b.stopping c.has stopped d.when it stopped
问题描述：
the bus ------,we walked across the street.a.stopped b.stopping c.has stopped d.when it stopped
b stopping,为什么?
答
两句话之间用逗号连接,说明是一句话,一句话只能有一个谓语动词,walked是谓语动词,所以前半句用非谓语形式,bus和stop之间是主动关系,所以用Ing形式dwhen it stopped 错在哪里了呢前面是the bus ，它后面加when it stopped，语序不对，应该是when the bus stopped