The mother and son recognized each other at first sight though separated for many years.
问题描述：
The mother and son recognized each other at first sight though separated for many years.
为什么不能用having been separated ,如果要用,该怎么用呢
答
当然可以用!不同的表达方式而已：
Having been separated for many years,the mother and son recognized each other at first sight.我的意思是说可不可以是though having beenseparated来取代原句，位置也不变。这是一道单选题，答案是separated如果用 though，后面就不能用 having been 了。这就像把意义相近的中文词放在一起，啰嗦、累赘。比如，你不会说“尽管虽然分别多年”，是吧？ 这个句子不能改成你想象的那样。