It's amazing how much it helped 语法点在哪

It's amazing how much it helped 语法点在哪
It's amazing how much it helped 语法点在哪

It's amazing how much it helped 语法点在哪
它能起这么大作用真是令人惊奇的.
语言点：It 是形式主语,how much it helped 是主语从句,真正的主语,help 不及物动词,意思 起作用.