这句英语句子的疑惑,Itisinthepublicschoolsthatwefindthefullexpressionofsociety'sunderstanding——theknowlegde,hopes,andfearsthatarepassednotothenextgeneration.破择号后的句子theknowlegde,hopes,andfea

Question

这句英语句子的疑惑,
It is in the public schools that we find the full expression of society's understanding —— the knowlegde,hopes,and fears 【that 】are passed no to the next generation.
破择号后的句子 the knowlegde,hopes,and fears【 that 】are passed no to the next generation.不用that也可以说通吧,这里为什么要用that呢?

Answer 1

不用that也可以说通
如何说得通
整句的意思是什么
 the knowlegde,hopes,and fears    【that 】are passed no to the next generation.
这不是个句子
are passed no to the next generation.
是修饰前面的   the knowlegde,hopes,and fears