It's a long time since they left. 他们已经离开很久了。 Come on, it's time we left. 快点，我们该走了。 When I left they were all still hard at it. 我离开的.时候他们都还在努力工作。 It's not for me to say why he left. 不适宜由我说出他离开的原因。 The university is on the left bank of the river. 大学在河的左岸。 上一篇：speak的过去式和过去分词 下一篇：lets后面加什么形态 |