People stop to share their personal stories of how much it meant to be helped when they were going through a rough time.

 翻译：人们停下来讲述他们的故事，讲述他们遇到困难时受到帮助对他们多么重要。

句子语法结构解析如下

主语：People

谓语：stop

目的状语：to share their personal stories of how much it meant to be helped when they were going through a rough time

目的状语语法结构解析如下

不定式：to share

不定式逻辑宾语：their personal stories of how much it meant to be helped when they were going through a rough time

不定式逻辑宾语语法解析

名词短语：their personal stories

修饰名词短语后置定语：of how much it meant to be helped when they were going through a rough time

后置定语语法解析如下

介词+宾语从句

介词：of

宾语从句:how much it meant to be helped when they were going through a rugh time

宾语从句语法结构解析如下

形式主语：it

谓语：meant

宾语：how much

真正主语：to be helped（被别人帮助）(不定式被动结构充当）

时间状语：when they were going through a rough time

宾语从句结构换一种方式解析

It meant something to be helped when they were going through a rough time

对划线部分提问就是下面的句子

How much did it mean to be helped when they were going through a rough time

把以上句子用来作动词/介词宾语，就是下面的结构

How much it meant to be helped when they were going through a rought time

请问专家老师：

1. 我觉得“how much it meant to be helped when they were going through a rough time”是their personal stories的同位语从句，这样我们可以说“of引导同位语从句”吗？对于本句，of还可以理解为表示“所属关系”吗？
   

解答如下：不是同位语，是后置定语。

2. 从句中，it 是形式主语，不定式结构“to be helped when they were going through a rough time”是真正的主语。我们也经常见到to do取代it。现在请问老师，是否能用现在分词 “being helped …” 来替代不定式“to be helped”呢？在这个句型中，to do不表示“将要被帮助”而是“已经发生/完成了的的帮助”，是吗？

解答如下：

不可以用being helped ，这个结构有2种含义，动名词被动式，现在分词被动结构。(现在分词结构不能作主语）不定式一般式被动表示按照他们的经历设想其他人也遭遇这种经历的一种情景而描述的，复合语境表达。

People stop to share their personal stories of how much it meant to be helped when they were going through a rough time.

 翻译：人们停下来讲述他们的故事，讲述他们遇到困难时受到帮助对他们多么重要。

请问专家老师：

1. 我觉得“how much it meant to be helped when they were going through a rough time”是their personal stories的同位语从句，这样我们可以说“of引导同位语从句”吗？对于本句，of还可以理解为表示“所属关系”吗？

2. 从句中，it 是形式主语，不定式结构“to be helped when they were going through a rough time”是真正的主语。我们也经常见到to do取代it。现在请问老师，是否能用现在分词 “being helped …” 来替代不定式“to be helped”呢？在这个句型中，to do不表示“将要被帮助”而是“已经发生/完成了的的帮助”，是吗？

【答】你一共涉及3个问题，逐一解答如下：

1. stories of how much it meant...，  介词of 有10多种意思。除了表示“所属关系”外，还表示“涉及；关于；有关于”，相当于about。

stories of how much it meant = stories about how much it meant

所以，how much it meant to be helped when they were going through a rough time 不是stories 的同位语从句，而是of 的宾语从句。of 引出stories 的内容。

2. 是否能用现在分词 “being helped …” 来替代不定式“to be helped”呢？——网友这个表述不正确。being helped 是动名词，跟不定式一样可以作主语。但说成现在分词就不可以了，现在分词是不能作主语的。你的意思是：动名词being helped 能不能代替 to be helped？一般说来是可以的，但是，如果使用了形式主语it，原则上使用不定式；若不用形式主语it，则直接使用动名词即可。就本句来讲，用了形式主语 it，为何还要用动名词呢？

3. 就本句而言，用to be helped 和to have been helped 都可以，但是，即便不用完成体，也不影响理解句意。to be helped 并不意味着“将来得到帮助”。为了理解，我把原句分离出来，就是：How much did it mean to be helped? 只是表述一种客观现象，不强调是否已经得到了帮助。