We were very interested in the novel that she gave us yesterday
l saw him play tennis yestoday
这两句话都是过去发生的 为什么第一句都是过去式 还加ed第二句play就不加了?
We were very interested in the novel that she gave us yesterday
l saw him play tennis yestoday
这两句话都是过去发生的 为什么第一句都是过去式 还加ed第二句play就不加了?
see sb do sth