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supplementary noun
The teacher provided supplementary materials for extra practice.
老师提供了补充材料供额外练习。
补充的；额外的
先理解核心含义，再看它在真实句子里的用法。
补充的；额外的
added to supply what is needed; extra
The teacher provided supplementary materials for extra practice.
老师提供了补充材料供额外练习。
额外的；补充所需的
Additional; added to supply what is wanted.
起辅助作用的
functioning in a supporting capacity
补充以补足或弥补不足的
added to complete or make up a deficiency
The teacher gave us some supplementary materials to help with the exam.
老师给我们一些补充材料来帮助备考。
AI contextual example
You can earn supplementary income by working part-time on weekends.
你可以周末兼职赚取额外收入。
AI contextual example
The report includes a supplementary section with more detailed data.
报告包含一个补充部分，提供更详细的数据。
AI contextual example
produced supplementary volumes
出版了增补卷。
WordNet
The teacher provided supplementary materials for extra practice.
老师提供了补充材料供额外练习。
These exercises are supplementary.
这些练习是补充性的。
表示与某事物的补充关系时常用to。
The appendix is supplementary to the main text.
附录是对正文的补充。
Not this
This is a supplement material.
Use this
This is a supplementary material.
错误：混淆了词性。'supplement' 是名词或动词，不能用作形容词。应使用形容词形式 'supplementary'。
Not this
The exercises are supplementary of the main text.
Use this
The exercises are supplementary to the main text.
错误：介词误用。'supplementary' 后接介词 'to' 表示补充的对象，而非 'of'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
补充材料
The teacher provided supplementary material for the exam.
老师为考试提供了补充材料。
补充信息
Please refer to the supplementary information for more details.
请参考补充信息获取更多细节。
额外收入
She earns supplementary income by tutoring on weekends.
她通过周末做家教赚取额外收入。
附加问题
The committee asked supplementary questions during the hearing.
委员会在听证会上提出了附加问题。
补充阅读
The course includes a list of supplementary reading materials.
这门课程包括一份补充阅读材料清单。
补充福利
The company offers supplementary benefits such as health insurance.
公司提供补充福利，如健康保险。
Use supplementary naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象吃主餐后，再来一份‘补充’甜点（supplementary dessert），记住它是‘额外辅助’的形容词。
在学术写作、商务文档或使用说明中常见，语气中性，既可正式也可非正式。
常用于名词前作定语，或后接to表示补充于某物。
Dictionary facts from ECDICT, WIKTIONARY.