Word · CEFR A2 · Frequency #6454
harmful
/ˈhɑːrmfl̩/
adjective
有害的
Causing or likely to cause harm or damage.
- 1.
Causing or likely to cause harm or damage; injurious.
有害的；造成伤害的。
- 2.
causing or capable of causing harm
造成或能够造成伤害的；有害的
有害的；造成伤害的。；造成或能够造成伤害的；有害的；伤害的
In use
Exposure to harmful chemicals can cause serious health problems.
This plastic is not harmful to the environment because it biodegrades quickly.
The doctor warned that too much screen time can be harmful to your eyes.
too much sun is harmful to the skin
harmful effects of smoking
be harmful to sb/sth
Smoking is harmful to your health.
吸烟对你的健康有害。
harmful effects/impact/consequences of sth
Connections
Collocations
- harmful effects
- 有害影响
- The harmful effects of smoking are well known.吸烟的有害影响是众所周知的。
- harmful substances
- 有害物质
- This product contains no harmful substances.该产品不含有害物质。
- harmful bacteria
- 有害细菌
- Wash your hands to remove harmful bacteria.洗手以去除有害细菌。
- harmful chemicals
- 有害化学品
- Avoid exposure to harmful chemicals in the workplace.避免在工作场所接触有害化学品。
- harmful behavior
- 有害行为
- Bullying is harmful behavior that should be stopped.欺凌是有害行为，应该被制止。
- harmful impact
Learner notes
Memory Tip
harm（伤害）加上-ful，记忆：‘harm’就是‘害’，所以‘harmful’是‘有害的’。
Context & Register
中性语域，常用于健康警告、环境讨论、产品说明及日常抱怨等场景。
Grammar Note
harmful 后面常接介词 to。
Pronunciation & Spelling
All words end in '-ful' and share the unstressed /fəl/ ending, but none have the stressed vowel /ɑː/ of 'harmful', so they are not perfect rhymes.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.