Whatever is worth doing is worth doing well.的句式分析

本句由 主语从句+谓语+复合宾语 构成
1 whatever is worth doing 是全句的主语 其中代词whatever 是主语 is worth 是谓语 doing 是动名词做宾语
2 is worth 是系表结构,可以看做本句的谓语
3 doing well是复合宾语,即动名词doing 和它的副词well d的组合
全句的意思是 凡是值得做的事情都是值得做好的事情.