为什么well begun,half done,而不是well begin,half done?

为什么well begun,half done,而不是well begin,half done? well begun is half Well begun,half Well begun is half done.well begun是名词性质吗?不然为什么做主语? Well begun half done Well begun 和 half done well begun is half done. Well begun is half done.其中begun的词性.begun为什么充当名词?它不是动词么? Well begun,half done.begun的用法begun是begin的过去分词.这个用法涉及了什么语法?为什么用well搭配begun? well begun is half done的begin用法问题well begun is half done还是well begin还是well beginning?为什么? 翻译谚语：Well begun is half done. 翻译：Well begun is half done. Well begun is half done中文翻译KKKKKKKKKKKKKK! well begun is half done.中文意思 Well begun is half done!为什么用副词而不是形容词good呢?不是副词修饰动词放在动词后么？为什么不是Beginning well is half done! well begun is half done中文意思,各位大侠棒棒忙! A snow year,a rich year.Well begun is half done中国的谚语是什么? 翻译：Well begun is half down .的中文意思.3Q That's the way it is.；Well begun is half done.是什么句型,成分怎么划分