Word · Frequency #3534
required
必需的；必要的
Necessary; obligatory; mandatory.
- 1.
Necessary; obligatory; mandatory.
必需的；义务的；强制性的。
必需的；义务的；强制性的。；必需的
In use
Reading the safety manual is required before using the equipment.
Please bring all required documents to the interview.
A valid passport is required for international travel.
be required for sth
A valid ID is required for entry.
进入需要有效身份证件。
be required to do sth
All passengers are required to fasten their seatbelts.
所有乘客都必须系好安全带。
be required by sth
This course is required by the curriculum.
本课程是课程大纲所必需的。
be required of sb
Silence is required of all students.
所有学生都需要保持安静。
Common mistakes
The documents require.The documents are required.
“require”是动词，不能直接作表语；应用形容词“required”，前面加系动词“are”。
This course is required of graduation.This course is required for graduation.
表示“为…所必需”时，应为“required for”，而不是“required of”，后者通常用于人。
Connections
Collocations
- required course
- 必修课
- This is a required course for all first-year students.这是所有大一学生的必修课。
- required reading
- 必读材料
- The professor assigned three books as required reading.教授指定了三本书作为必读材料。
- required field
- 必填字段
- All required fields must be filled in before submitting the form.提交表格前必须填写所有必填字段。
- required skills
- 必备技能
- Communication and teamwork are required skills for this job.沟通和团队合作是这份工作的必备技能。
- required documents
- 必需文件
- Please bring all required documents to the interview.请将所有必需文件带到面试现场。
- required level
Learner notes
Memory Tip
想象‘re’（再次）加‘quired’（要求），一再要求的东西就是‘必需的’。
Context & Register
作为形容词，'required' 的使用场合较为广泛，既可用于正式场合（如官方文件、规则说明），也可用于日常交流（如日常任务、必需品）。但比较常见于需明确指示必要性的语境，如表格填写、课程要求、工作流程等。整体语气中性，不带有特别正式或随意的情感色彩。
Grammar Note
常与 for, to 或 that 从句连用，表示必要或强制。
Pronunciation & Spelling
These words all end with the /aɪɝd/ sound, matching the ending of 'required'. Spelling '-ired' consistently produces this sound. No lookalikes with different sounds included.
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.