It may be said【 that the measure of the worth
of any social institution is its effect in enlarging and improving experience;】
but this effect is not a part of its original motive.
我自己分析句子成分的时候“but this effect is not a part of its original motive. ”当成了括号内的成分,就是说
It may be said【 that the measure of the worth
of any social institution is its effect in enlarging and improving experience;
but this effect is not a part of its original motive. 】但是答案上but引导的句子是一个单独的句子,并不属于从句的一部分,但是我不懂为什么
就是说只能从语义角度来判断他们是并列复合句么
有没有办法从语法或结构上来判断关系,因为面对一个新句子一般看不懂语义