it's often said that human beings are naturally equipped to speak 自己有often 为什么不用一般现在时呢?为什么要用过去时?不是说看到often 用一般现在时吗?

it's often said that human beings are naturally equipped to speak 自己有often 为什么不用一般现在时呢?为什么要用过去时?不是说看到often 用一般现在时吗?

同学注意一下,句子开头是it's.,这是个被动语句,意思是“that”后面的话经常被人说,所以say要写成被动时态——said