Gone are the days when we were young and happy.我们朝气蓬勃,无忧无虑的日子一去不复返了.
问题描述：
Gone are the days when we were young and happy.我们朝气蓬勃,无忧无虑的日子一去不复返了.
句子分析
答
这是倒装句,在文学作品或歌曲中经常这样用,为了突出已经一去不复返了.正确的语序是：
the days when we were young and happy are gone.