Question

求英语高手进分析一下句子成分

Few people ask by what authority the writers of dictionaries and grammars say what they say.
宾语那么长能不能再简单分析一下宾语呢

Answer 1

Few people ask （后面就是一个很长的宾语）by what authority the writers of dictionaries and grammars say what they say。

现单独分析这个长宾语，可改为[the writers of dictionaries and grammars ] say what they say (by what authority ).
词典和语法书的作者在这里是主语，say 是谓语，what they say 是宾语，by what authority是状语，提到前面用在ask后面提问。

Answer 2

few 定语，修饰 people
people 主语
asks 谓语
从by what 到结束都是宾语从句 （用 that 引导，that可省略）
宾语从句的成分：
the writers of dictionaries and grammars 主语
say 谓语
what they say 宾语
by what authority 不太清楚，应该是补语，请其他高手补充。

全句意思：很少有人会问词典与语法书的作者写作的根据是什么。

Answer 3

很少有人问，字典和语法书的作者们是以什么为依据标准编书的。
词句为宾语从句
主语 Few people
谓语 ask
宾语是后面的 by what authority the writers of dictionaries and grammars say what they say