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HSK 2.0 Level 3+ HSK 3.0 Level 3+ 6 min read

The Prefix 老 in 老王, 老师 and 老二

Use 老 + surname to address an older person you know well, and recognize 老 as a prefix in words like 老师 and 老二.

Pattern

老 + one-syllable surname (老王); 老 + number (老二); fixed words (老师, 老虎)

In 老王, 老 makes a warm name for an older acquaintance; in words like 老师 it does not mean “old” at all.

老李是我爸爸的同事。

When to use The Prefix 老 in 老王, 老师 and 老二

Put 老 before a one-syllable surname to make a warm, familiar name for an older person you know well, such as a colleague, neighbor or family friend: 老王, 老李. It sounds friendly, not rude, and middle-aged colleagues and friends often call each other this way. 老 is also a prefix in some everyday words where it does not mean “old” at all: 老师 is any teacher, young or old.

老王，早上好！

Morning, Wang!

老张住在我家楼上。

Mr. Zhang lives upstairs from us.

我们的老师很年轻。

Our teacher is very young.

我是老二，上面还有一个哥哥。

I’m the second child; I have an older brother.

Common traps

  • Call your teacher 王老师, not 老王: 老 + surname is for familiar people, not for teachers or bosses in a formal setting.
  • Say 老王, not 老王明: 老 goes before the surname alone, never before a full name.
  • Don’t read 老师 as “old teacher”: 我们的老师很年轻 is perfectly natural.

Targeted drill

Practice this exact pattern before moving on.

大家都叫这位年长的邻居 王

Choose the familiar prefix used before the surname of an older acquaintance
Fill in the missing piece, then press Enter

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