Question

But the first people who were like ourselves lived so long ago that even their sagas,if they had an

,are forgotten.分析下句型结构，谢谢。that even their sagas

Answer 1

who were like ourselves 是一咐稿个定语从句修饰the first people
so long ago that 是so ......that 句型 是一个结果状语从陵简宽句，尺亮年代如此的远以至于
if they had an sagas，their sagas are forgotten 这是原本的结构，if they had an 是一个条件状语放到句中了

Answer 2

然而，作为与我们（现在人）几乎一样的第一批人雀运类，由于他们生活的年代距胡岁毁今过于久远，因此，就算当时他们有对相关裤备历史的记录和传说，这些记录和传说也早已被遗忘了。

so ......that 如此，以致。