核心词议：
adj. 无价值的；不值钱的；卑微的
worthless 基本解释
adj. 无价值的，不值钱的；卑微的；不足取的，不足道的；不足轻重
速记方法
速记技巧 词根词缀法 worth价值+-less形容词词尾，否定
知识扩展
词根词缀 词根：worth表示"值得"adj.worth值得…的worth值得→adj.值得…的n.价值v.值…的，价值…prep.值得…的
中文词源
中文词源： worthless
精选例句
1、 He dismissed the opinion polls as worthless.
他认为民意测验毫无用处而不予考虑。
2、 Training is worthless unless there is proof that it works.
训练并无价值，除非证明其有效。
1、 This is especially concerning given the pandemic (大流行病) has rendered a college education practically worthless.
考虑到这场大流行使得大学教育几乎一文不值，这一点尤其令人担忧。
1、 Time was when biologists somewhat overworked the evidence that these creatures preserve the health of game by killing the physically weak, or that they prey only on “worthless” species.
曾经有一段时间，生物学家在某种程度上过度研究了这些生物通过杀死身体虚弱的动物来保护猎物健康的证据，或者它们只捕食“毫无价值”的物种。
常见考点例句：
- And even a battered apple device isn 't worthless .
- 甚至就连严重损毁的苹果产品也并非一文不值。
- There are so many sites that have unnecessary ajax animations or worthless parts that are loaded with ajax .
- 有些网站使用了太多不必要的ajax动画，或使用ajax来加载无用的部分。
- Even the former should now understand this : why , after all , accumulate worthless foreign assets ?
- 即便是前者到现在也应该已经领悟了：追根究底，何必要积攒那些无价值的外国资产呢？
- It might seem like cheating , but the other metals aren 't exactly worthless .
- 看上去也许让人难以置信，但其他奖牌可不是不值钱的噢。
- The vaults of german and french banks are stuffed with worthless assets .
- 德国和法国不少银行的账目上也堆满了一文不值的资产。
