èr num.

Two parallel strokes representing the number two. Two; second; twice; double. Two equal horizontal lines, like counting one, two.

Common Usage & Traps

  • 一二三 (yī èr sān) — one, two, three (counting)
  • 二十 (èr shí) — twenty
  • 十二 (shí èr) — twelve
  • 二月 (èr yuè) — February
  • 二个人 两个人

    Before a counting word like 个, use 两. 二 belongs in plain numbers and compounds.

  • 现在二点 现在两点

    When 点 means o'clock, use 两. Keep 二 for decimals like 二点五.

两 vs 二: When to use which word for 'two' in Chinese?

Use 两 before a counting word; use 二 for plain numbers, dates, phones, and compounds.

Chinese splits 'two' into two jobs. Use 两 when a counting word follows: 两个人, 两天, 两块. Use 二 when you are just saying digits or building numbers: 一、二、三, 十二, 二十. Dates and months also take 二: 二月, 二号. Phone numbers and math use 二 too: 二零二, 二点五. Think of 两 as 'two things' and 二 as 'the digit 2'. “一二三四五, 今天星期五。” (One, two, three, four, five — today is Friday.) ── [《一二三(2)》](/read/counting-days-rhymes#s1)

DimensionNaturalAvoid
Before 个, 天, 块两个人, 两天, 两块二个人, 二天, 二块
Plain counting一、二、三一、两、三
Compound numbers十二, 二十十两, 两十
Dates and months二月, 二号两月, 两号
Phone and math digits二零二, 二点五两零二, 两点五

Do you really say 两点 for two o'clock, not 二点?

Two o'clock is 两点, not 二点; 二点五 means 2.5, not 2:00.

点 does double duty: o'clock and decimal point. For o'clock, 点 acts like a counting word, so two o'clock is 两点. For decimals, 二 is the digit: 二点五 is 2.5. Saying 现在二点 sounds like 'now is two-point' or a broken time phrase. Say 现在两点 for 2:00.

DimensionNaturalAvoid
Two o'clock两点二点
Decimal 2.5二点五两点五

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