下面句子中的“that”和“who”指代什么?
问题描述：
下面句子中的“that”和“who”指代什么?
1.There was once a man who knew men and horses very well.
此句中的“once”表示什么意思?
2.Some people will believe that we are born lucky or unlucky.
此句中的“that”指代什么?
答
once从前,who指代a man
that指代 we are born lucky or unlucky