请帮我翻译几个句子，先谢谢了O(∩_∩)O~~~（翻译成英语）

是不是讲八下第六单元现在完成进行时？ How long has Chen Yixun been studying music? How long has An Yixuan been acting plays? How long has Rong Zuer been singing? 如果是这个单元的内容，可以根据当下同学们当中比较流行的人物，选几张图片，放入幻灯片中，比如许嵩，然后让同学们猜，how long has he been singing\writing music之类