How common it is
乙 appears often in everyday Chinese, so it is worth practicing early and reviewing often.
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Pronunciation focus
Say yǐ slowly first, then repeat it in a short phrase. Listen for the tone shape.
Usage note
乙是天干的第二位，常用来表示顺序中的第二，比如乙等或乙方。
Yǐ shì tiāngān de dì èr wèi, cháng yòng lái biǎoshì shùnxù zhōng de dì èr, bǐrú yǐ děng huò yǐ fāng.
Second (B) is the second of the Heavenly Stems, often used to indicate the second in order, like grade B or party B.
Context note
在中文里，乙用于分类或排名，比如考试成绩分甲、乙、丙，乙是第二好的。
Zài zhōngwén lǐ, yǐ yòng yú fēnlèi huò páimíng, bǐrú kǎoshì chéngjī fēn jiǎ, yǐ, bǐng, yǐ shì dì èr hǎo de.
In Chinese, second (B) is used for classification or ranking, such as exam scores divided into A, B, C, with B being the second best.
5 examples
他得了乙等成绩。
tā dé le yǐ děng chéng jì。
He got a grade B.
这个计划是乙方案。
zhè ge jì huà shì yǐ fāng àn。
This plan is plan B.
乙队赢了比赛。
yǐ duì yíng le bǐ sài。
Team B won the game.
请把文件放在乙文件夹里。
qǐng bǎ wén jiàn fàng zài yǐ wén jiàn jiá lǐ。
Please put the file in folder B.
乙班的学生很努力。
yǐ bān de xué shēng hěn nǔ lì。
The students in class B are very hardworking.
5 mini stories
甲和乙是好朋友。他们一起做作业。
jiǎ hé yǐ shì hǎo péng yǒu。 tā men yì qǐ zuò zuò yè。
A and B are good friends. They do homework together.
乙组负责打扫教室。他们打扫得很干净。
yǐ zǔ fù zé dǎ sǎo jiào shì。 tā men dǎ sǎo dé hěn gān jìng。
Group B is responsible for cleaning the classroom. They cleaned it very clean.
乙选项是正确的答案。小明选对了。
yǐ xuǎn xiàng shì zhèng què de dá àn。 xiǎo míng xuǎn duì le。
Option B is the correct answer. Xiao Ming chose correctly.
乙楼在甲楼旁边。两栋楼都很高。
yǐ lóu zài jiǎ lóu páng biān。 liǎng dòng lóu dōu hěn gāo。
Building B is next to Building A. Both buildings are very tall.
乙号座位靠窗。可以看到外面的风景。
yǐ hào zuò wèi kào chuāng。 kě yǐ kàn dào wài miàn de fēng jǐng。
Seat B is by the window. You can see the scenery outside.