not being tall should not become a serious disadvantage in life and work.
问题描述：
not being tall should not become a serious disadvantage in life and work.
为什么是not being tall ，怎么解释
答
not being tall 在句子中做主语,主语部分必须是名词性,所以being作动名词.
翻译过来就是,长得不高（这件事）不应该成为生活和工作中的劣势.