Do you know who it was that invented paper-making

Question

Do you know who it was that invented paper-making in China? 这句话里面who it was that是什么用法？麻烦指教，谢谢！！

Answer 1

it was…that强调句型，可以直接省略，不影响句子成分和意思。

还原为陈述句你就知道了

I know （it was）who（that）invented paper-making.

Answer 2

it was who that 这个是强调句的句型哦。强调是某人。。。。

Answer 3

那部分是强调句追答

被强调的是疑问词who,it was,,that这三个词是强调句的构成部分，不用翻译。

这个强调句做了宾语从句

Answer 4

宾语从句，know是动词后接宾语