A cat is ability to survive falls is based on fact.falls是复数为啥用is?
问题描述：
A cat is ability to survive falls is based on fact.falls是复数为啥用is?
答
楼主句子抄错了吧?
如果是“A cat's ability to survive falls is based on fact.”就可以理解为名词从句作主语（a cat's ability to survive falls）了.