請幫我看下下面的句子應該如何去分析

題目：

請幫我看下下面的句子應該如何去分析
What worried him most was his not being allowed to visit his sick child.
What worried him most是從句做主語,was是謂語,那麼 his not being allowed to visit his sick child是什麼呢?to visit his sick child是結果狀語嗎?那his not being allowed又是幹什麼的,his可以改成him嗎?教材上寫好像是動名詞複合結構,本人語法不是很好,看到his not being allowed這句話尤其暈,希望英語達人們能講的透徹些,

解答：

這是涉及代詞所有格的用法的典型問題.
「代詞所有格+動名詞」可以合成詞組用來表示「某人的…行爲(作主語或賓語)」.例如「他對我們大學的訪問使我們感到很驕傲」的英文可以是: His visiting to the university made us feel very proud of ourselves.(這裡his visiting to the university整體作主語)這樣,你可以知道你的句子裡爲什麼用了his not being allowed to …(他沒被允許…[整體作主語]),當然也知道其後的to visit his sick child是什麼了.
上述代詞所有格his是不能用him代替的!
再問： his not being allowed to …(他沒被允許…[整體作主語])？
再答： 對的。his not being allowed to visit his sick child (「他未被允許去看他鬧病的孩子」)這個整體作整個句子的主語。整句改換一下就是His not being allowed to visit his sick child made him worried most.