IT has been a long time since you dropped in---- 反义疑问句为何要说 hasn't it 而不说 didn't you

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IT has been a long time since you dropped in---- 反义疑问句为何要说 hasn't it 而不说 didn't you
IT has been a long time since you dropped in---- 反义疑问句
为何要说 hasn't it 而不说 didn't you

IT has been a long time since you dropped in---- 反义疑问句为何要说 hasn't it 而不说 didn't you
反意疑问句在做时要清楚,最后反问的是什么问题.
It has been a long time 是主句,since you dropped in是从句.
反义疑问句要根据主句来.
这里反问的是主句：难道不是（很长时间了）吗?
I don't think these are made of real silk,are they?
通过翻译来看,要反问的是：我认为这些不是用真丝制造,难道不是（没用真丝制造）吗?
所以反问要用are they?（注意这句中否定是在从句,但not要提前,因为是I think 引导）

it has been....是作为句子的主要结构，since是从句，一般疑问时，要根据主句进行提问，除非特殊要求对从句进行提问，所以该句子是说hasn't it
表示自从你拜访后，已经很长时间了。

主语是it,时态是现在完成时,所以反义疑问句要用 hasn't it那么 I don't think these are made of real silk, are they?也可以分析成主语是I 时态是一般现在是啊这两个句子并不是一种类型 IT has been a long time since you dropped in 这里主语是it,所以反意疑问句是hasn't it 而I d...

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主语是it,时态是现在完成时,所以反义疑问句要用 hasn't it

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hasn't it

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