数詞

すうし

numeral

JLPT N1

Character Breakdown

Understanding 数詞 (すうし)

数詞 refers to numerals, the words or characters used to represent numbers in Japanese. They are essential in everyday communication for counting, indicating order, and expressing quantities.

Usage and Context

In Japanese, 数詞 often appear combined with 助数詞 (counters), which specify the type of object being counted, such as 本 (long objects), 枚 (flat objects), or 人 (people). For example, "三本" (さんぼん) means "three (long objects)".

数詞 can be written in kanji (e.g., 一, 二, 三) or Arabic numerals (1, 2, 3). Both forms are widely used depending on context, formality, and medium.

Common Collocations and Patterns

  • 数詞 + 助数詞: to count specific objects (e.g., 五人 - five people)
  • 順序を表す数詞: ordinal numbers (e.g., 第一 - first)
  • 漢数字: traditional kanji numerals (e.g., 十, 百)

Tips for Learners

Be careful not to confuse 数詞 with 助数詞. 数詞 indicate the number itself, while 助数詞 classify the object counted. Also, note that some numbers have irregular readings when combined with certain counters.

Understanding 数詞 is fundamental for mastering Japanese numbers, dates, times, and quantities in natural conversation.

Example Sentences

にほんごのすうしには、じょすうしとくみあわせてつかうものがあります。

In Japanese numerals, there are those used in combination with counters.

すうしはすうりょうやじゅんじょをあらわすためにつかわれます。

Numerals are used to express quantity or order.

かんすうじとアラビアすうじはどちらもすうしのいっしゅです。

Both kanji numerals and Arabic numerals are types of numerals.