how big an impact 是否缺少系动词

请教这句话最后部分how big an impact是否缺少系动词结构？是否应改为how big is an impact？

We think it is, but how widespread is it and how big an impact (is it省略）?

网友给出句子实际上是“How +形容词+a/an+名词+(主语+谓语动词省略)”

【1】how widespread is it 属于“How +形容词+主语+系动词be”倒装结构

感叹陈述结构:How tall the tree is! 倒装疑问结构 How tall is the tree?

【2】how big an impact is it属于“How +形容词+a/an+名词+主语+系动词be”倒装结构

感叹陈述结构：How tall a tree it is! 倒装疑问结构:How tall a tree is it?

备注:How tall a tree it is! =What a tall tree it is !

陈才 - 英语教师

擅长：中考英语,词法问题 | 采纳率 28% | 回答于 2023-10-05 21:01

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好题 2023-10-05 17:36

擅长：英语

应该理解为how big an impact (is it)?