大家好，请教一下。辞典里看到help的例句
It helped a lot to know that someone understood how I felt.
这句可以理解。to know是不定词词组修饰helped
It doesn't really help matters knowing that everyone is talking about us.
这句不懂了，knowing用ing的原因是什么？原本是认为分词构句，可是knowing改写回去
的主词会是it吗？
我改写是这样：
It doesn't really help matters, although we know that everyone is
talking about us.
后面的主词是we，和前面不一样，应该不能化减为分词构句？
还有其他例子，如：
It helped being able to talk about it.
谢谢！