who was knocking at the door just now?还是who knocked at the door just now?
问题描述：
who was knocking at the door just now?还是who knocked at the door just now?
答
knocked.
just now一般与一般过去式联用.我也是这样认为的,但是书上给的答案是进行时,我就有点晕,是不是有什么特别的用法?重新想了一下 这样解释吧应该：just now用于过去时和现在时。1：过去时中，可用于一般过去或过去进行时：一般过去：I saw her just now.我刚看见她了过去进行：I was dancing just now.我刚在跳舞过去进行时强调行为本身，动词wash、knock、read等多用。2：现在时下，just修饰now表示现在。如：I am busy with finishing my homework just now. 我现在正忙着完成作业呢。综上 要强调刚才的动作就多用过去进行时。受教了，与君共勉。