① 翻译：当我到达电影院时，电影已经开始十五分钟了。
当我到达电影院时，电影已经开始十五分钟了
The movie has started for 15 minutes when I arrived the cinema
② 当我们到达电影院时，电影已开始二十分钟了（翻译成英语）
翻译如下：
当我们到达电影院时，电影已开始二十分钟了
When we arrived at the cinema, the film had already been on for twenty minutes
③ “当我到达电影院时，电影演5分钟了，”用英语怎么表达，（用过去完成时）
When I arrived at the cinema, the movie had already begun for 5 minutes.
④ 当我t到达电影院时,电影已经开始了英语
你好！
当我到达电影院时,电影已经开始了
When I arrived at the cinema, the film had already started