have been doing只能表示现在完成进行时吗？为什么have been quarrelling与have been having a quarrel

1,
have been 接现在分词doing，只表现在完成进行时。
2,
have been quarrelling 等于 have been having a quarrel，不等于 have had a quarrel 。
3,
quarrel 是名/动同形词，适合“have a 名词 ”等同 动词本身的条件，时态变化随其动词性用法时的时态相应改变have时