How common it is
用于 appears often in everyday Chinese, so it is worth practicing early and reviewing often.
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Pronunciation focus
Say yòng yú slowly first, then repeat it in a short phrase. Listen for the tone shape.
Usage note
用于表示被用在某种目的上。
yòng yú biǎo shì bèi yòng zài mǒu zhǒng mù dì shàng。
用于 means being used for a purpose.
Context note
用于常用于正式表达、技术和说明。
yòng yú cháng yòng yú zhèng shì biǎo dá 、 jì shù hé shuō míng。
用于 is often used in formal writing, technology, and instructions.
5 examples
这个按钮用于开灯。
zhè ge àn niǔ yòng yú kāi dēng。
This button is used to turn on the light.
材料用于制作衣服。
cái liào yòng yú zhì zuò yī fu。
The material is used to make clothes.
它用于学习。
tā yòng yú xué xí。
It is used for learning.
这个词用于正式场合。
zhè ge cí yòng yú zhèng shì chǎng hé。
This word is used in formal situations.
水用于很多地方。
shuǐ yòng yú hěn duō dì fāng。
Water is used in many places.
5 mini stories
这种纸用于打印。
zhè zhǒng zhǐ yòng yú dǎ yìn。
This paper is used for printing.
这个工具用于修理门。
zhè ge gōng jù yòng yú xiū lǐ mén。
This tool is used to repair doors.
老师解释了这个词用于什么地方。
lǎo shī jiě shì le zhè ge cí yòng yú shén me dì fāng。
The teacher explained where this word is used.
药物用于帮助治疗。
yào wù yòng yú bāng zhù zhì liáo。
The medicine is used to help treatment.
这台机器用于生产东西。
zhè tái jī qì yòng yú shēng chǎn dōng xī。
This machine is used to produce things.