求语法讲解.The writing of a dictionary ,therefore,is not a task...
The writing of a dictionary ,therefore,is not a task of setting up ruling statements about the “true meanings” of words,but a task of recording,to the best of one's ability,what various words have meant to authors in the distant or immediate past.
教材的翻译是：因此编写词典的任务并不是给词规定出“确切定义”,而是尽最大的努力记录下很久以前或不久以前作者们认为各种词的含义.
我想知道：①to the best of one's ability这个是所谓的独立主格么?有没有省略什么?
②therefore放在句首是不是更合适?
③what various words have meant to authors in the distant or immediate past.的主语是什么?