分析个英文句子

这句话Many people are worried about | |the harmful influence| TV has |on children| who grow up spending too much time watching it

TV has 都是做 influence的定语
who grow up spending too much time watching it 是做children的定语

定语中嵌套定语从句

哪里不理解啊 ？

Many people are worried about the harmful influence
TV has on children （定语从句，修饰influence）
who grow up spending too much time watching it（定语从句，修饰children）

整体上来看是定语从句，定语从句里面又有个定语从句 。

这个句子的主要结构是many people are worried about the harmful influence TV,它是整个句子的主句。后面一大节都是说明前面这个主句的情况。influence是作用与children身上的，而who后面一大部分来修饰children。
总的来说是主语从句，这道题是考你对主语句的应用。

many people主语
are worried about 谓语
the harmful influence ....宾语
对宾语分析
the harmful influence主语
the harmful influence TV has on children 是倒装
正常语序是TV has the harmful influence on children
children who grow up spending too much time watching it
who后面是children的定语从句 spending to much time...是grow u