expert
expert — noun
1. Someone who, through years of study or practice, has built a very deep understan
Someone who, through years of study or practice, has built a very deep understanding of a single field or kind of work.
Defne asked a local art expert to find out how old her old painting really was.
expert + on: specific topic knowledge
The police brought in a medical expert to study the evidence from the crime scene.
Otis is a computer expert who can fix almost any software problem in minutes.
After years of practice, Sumin became an expert at making traditional Korean rice cakes.
The court called an expert in handwriting to compare the two letters.
- specialist
Focuses on a narrow field; preferred in medical and academic contexts. A heart specialist, but an expert cook.
- authority
A person whose opinions are widely trusted and respected; stronger weight of influence than expert.
- professional
Someone who does an activity for money rather than as a hobby; not all professionals are experts, and not all experts are professionals.
- master
Someone with exceptional skill, usually from long practice; implies a higher level than expert.
文法句型
expert + in/at/on + noun/gerund
expert + on + topic
用法筆記
The noun is followed by different prepositions depending on the type of knowledge: in and on for fields of knowledge (an expert in ancient history / on climate change), at for skills (an expert at fixing cars).
常見錯誤
expert — adjective
1. Done or made with a very high level of knowledge and skill; showing that the per
Done or made with a very high level of knowledge and skill; showing that the person who did it really knows their subject.
The mountain climber followed an expert guide who knew every safe route up the rock.
attributive: expert + noun
Amani gave expert advice on how to prepare for the job interview.
Élise is expert at reading old handwritten documents from the 1700s.
The chef made an expert cut through the fish, removing every single bone.
Tariro offered an expert opinion on which plants grow best in dry soil.
- skilled
A general term for ability gained through practice; less intense than expert.
- accomplished
Suggests high achievement and polish; often used for arts and performance.
- masterly
Implies the highest level of skill, like that of a master; formal register.
- proficient
Focuses on competence and efficiency; more neutral and less admiring than expert.
- amateurish
Done without skill, as if by an amateur; carries a negative judgement.
- inexpert
Lacking skill or knowledge; the direct opposite of expert.
- novice
Describes someone at a beginner level, lacking experience.
文法句型
expert + noun
be + expert + at/in + noun/gerund
用法筆記
As a predicative adjective (be expert at/in + noun/gerund), this sense is less common than the attributive use (expert + noun). The predicative pattern is more frequent in formal or written English.
常見錯誤
expert — verb
1. To give a professional opinion or assessment in a situation where your special k
To give a professional opinion or assessment in a situation where your special knowledge is needed, such as a court trial or an official review.
Dr. Adina Chen experted on the chemical evidence during the environmental hearing.
formal legal context
The committee asked Professor Okonkwo to expert on the safety of the new bridge design.
A specialist from the museum experted on the age of the newly found pottery pieces.
Amani was asked to expert on the authenticity of the old violin at the auction house.
文法句型
expert + on + noun phrase
用法筆記
This verb is very rare in everyday English. It appears mostly in formal or legal contexts. The much more common way to express this idea is to use the noun phrase serve as an expert or give expert testimony.