It's a pity that you are not,so you don't understand.翻譯成中文,啥

題目：

It's a pity that you are not,so you don't understand.翻譯成中文,啥意思?

解答：

你不是（...）真可惜,難怪你不明白.
真可惜你不是,難怪你不明白.