回答問題一：
being done這種結(jié)構(gòu)存在,作主語或賓語都可以,指“被.”這件事.
We were shocked at his being murdered in the public.
我們被他在大庭廣眾之下被謀殺這件事情給驚呆了.
Being cheated by girls is common for him.
對他來說,被女孩子欺騙是很稀松平常的事情.
（這兩種情況下,being都不可以省略或換成to be）
回答問題二：
非謂語動(dòng)詞在語法上是可以省略的,但含義上會有變化.
根據(jù)實(shí)際表達(dá)的需要,可以用到多個(gè)非謂語動(dòng)詞.
They stayed at home all the weekend, watching TV and cheering for their national team.
他們整個(gè)周末都呆在家里,看著電視,為自己的國家隊(duì)歡呼.(watching和cheering都是非謂語動(dòng)詞)