Without the music,the children ( ) so much fun.
Without the music,the children (wouldn't be having) so much fun.
"wouldn't be having"表达什么意思，为什么这样用
参考答案:the children wouldn't have so much fun是说孩子们不会有那么多的乐趣
wouldn't be having so much fun是说孩子现在不会有那么多的乐趣，强调目前正在...