Question

分析下面句子的语法结构/语法成分

We should not overlook the fact that the positive side that / which that students study in groups has is of great use to their future life

Answer 1

We should not overlook the fact 这是主句

that the positive side that / which that students study in groups has is of great use to their future life是fact的名词性从句，指代fact的内容

that / which that students study in groups has is of great use to their future life是定语从句，先行词是the positive side

Answer 2

这个句子的确让人晕晕乎乎的。
主句：We should not overlook the fact
修饰 the fact 的定语（同位语）从句：that the positive side is of great use to their future life
修饰 the positive side 的另一个定语从句：that / which that students study in groups has （前置词组 the positive side 是这个从句的宾语）
that students study in groups：students study = students' study（一个整体，可用that强调）

Answer 3

剥竹笋，分三层句子结构：
第一步，找到主句We should not overlook the fact。其后的that引导the fact，即宾语从句。
第二步，that引导的宾语从句 the positive side that / which that students study in groups has is of great use to their future life。这个宾语从句主干：the positive side is of great use to their future life，其包含一个主语从句，修饰主语the positive side。
第三步，宾从中以that/which引导的主语从句为students study in groups （has the positive side)。

Answer 4

the fact后面的两个that都是定语，(the positive side that),(students study in groups has is of great use to their future life).we should not overlook the fact这其实句子已经完整了。整个句子的意思是：我们不应该忽视这个事实：学生小组学习对他们未来的生活有着重要作用的积极一面。当然我是这么理解的，不知道对不对了。