Word · Frequency #34747
roughen
(使)变粗糙
make or become rough or rougher
- 1.
To make rough.
使变粗糙
- 2.
To become rough.
变得粗糙
使变粗糙；变得粗糙
In use
The constant rubbing roughened the surface of the table.
Exposure to wind and salt water is roughening the wooden deck.
Harsh chemicals roughen the skin if used too often.
roughen something
The sandpaper roughens the surface.
砂纸使表面变粗糙。
roughen something up
强调程度更强。
The wind roughened up the lake.
风使湖面变得波涛汹涌。
something roughens
The skin roughens in the cold.
皮肤在寒冷中变得粗糙。
Verb forms
base roughen · third person roughens · -ing roughening · past roughened · past participle roughened
规则动词
Common mistakes
The roughen surface is unpleasant.The rough surface is unpleasant.
中文学习者常将动词'roughen'误用作形容词直接修饰名词，但英语中形容词应为'rough'或过去分词'roughened'。本句中需用形容词'rough'来描述表面状态。
He roughen the metal yesterday.He roughened the metal yesterday.
'roughen'是规则动词，过去式应加-ed变为'roughened'。学习者易忽略词尾变化的规则。
The roughen of the table is noticeable.The roughness of the table is noticeable.
学习者误将动词'roughen'用作名词，英语中应使用名词'roughness'表示粗糙度。
Connections
Confusing words
Word family
- roughens
- third person singular
- roughened
- past, past participle
- roughening
- present participle
Learner notes
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 ECDICT, WIKTIONARY.