答：句法没问题.
句法分析：主语：whatever is worth doing ,这是一个名词性从句相当一anything that is worth doing 意为“任何值得去做的事情”.
谓语：is (系动词）
表语：worth doing well.这是一个介词短语,worth是介词,所以后跟动名词作宾语.
译：任何值得去做的事情都值得去做好.
改自谚语：Whatever is worth doing at all is worth doing well.
【谚】 凡是值得做的事情都值得好好地做.