It's just the three of you,is it?这句子有个问题文章是说有人在饭店定了晚饭,原来定了5人,但只到了三个.于是接待员问他门：“It's just the three of you,is it?”这里不是应该用“...,isn't it?是特殊用法

It's just the three of you,is it?这句子有个问题文章是说有人在饭店定了晚饭,原来定了5人,但只到了三个.于是接待员问他门：“It's just the three of you,is it?”这里不是应该用“...,isn't it?是特殊用法
It's just the three of you,is it?这句子有个问题
文章是说有人在饭店定了晚饭,原来定了5人,但只到了三个.于是接待员问他门：“It's just the three of you,is it?”
这里不是应该用“...,isn't it?是特殊用法还是口语要求不严格,可以随便用?

It's just the three of you,is it?这句子有个问题文章是说有人在饭店定了晚饭,原来定了5人,但只到了三个.于是接待员问他门：“It's just the three of you,is it?”这里不是应该用“...,isn't it?是特殊用法
用 isn't it 也可以,但不礼貌.is it 属口语常用.

口语都很随便的

就你们仨，对吧？is it这里可用right替代，比较随意的口语表达。

恩
最好的口语该说
So it is just the three of you, am I right?
既口语又不失礼貌

在口语里,is it 要比isn't it 更委婉礼貌.