Question

分析句子

it interrupts people around them who have to hear what they don't care when they want to concentrate on what they're doing.

Answer 1

it interrupts people around them :这个打扰了他们周围的人们
people who have to hear what they don't care：不得不听不在乎的内容的人们
when they want to concentrate on what they're doing.，
当他们（指代人们）想把注意力集中在他们正在做的事情上时
主干：it interrupts people
定语和定语从句修饰people ：around them who have to hear what they don't care
when they want to concentrate on what they're doing.：定语从句中的状语从句

Answer 2

这里it 是一个形式主语，真正的主语是What they don't care around them意思是他们周围他们不在乎的事情。
who引导的一个定于从句用来修饰people人们
when 引导了一个时间状语从句
what 引导了一个宾语从句
整句话的意思是当人们想要集中去做他们正在做的事情的时候，那些他们不得不去听周围他们不在乎的事情打扰到他们了。

Answer 3

为了更容易理解，用它代指会议。当人们想要做他们想做的事情时，会议打断了那些不得不听而又不关心会议的人们。