Question

英语句子成分分析，求助大神

In what is believed to be a first London’s Imperial College Business School is using holographic technology to present lectures to students.

1、In what is believed to be a first是做什么成分？

2、first 和London之间需要加逗号吗？

句子结构不太懂，没见过这么用，求助大神

翻译过来是：伦敦帝国理工学院商学院正在利用全息技术给学生讲课，这被认为是首次。

Answer 1

您好！这是个倒装结构。正语序为:Holograghic technology to present…is using in what is believed to be…
而且，what is believed to be 是插入成分，意思是所认为的，可以括起来就好理解了。
谢谢！希望能帮到你！

Answer 2

1、In what is believed to be a first 做状语 what引导的句子做宾语从句
2、加不加逗号都可以
3、London’s Imperial College Business School主语
is using 谓语
holographic technology宾语
to present lectures to students目的状语