a book・two books・some water

可數名詞、不可數名詞和複數

Countable and uncountable nouns — English grammar, junior high

接續

說明

能一個一個數的名詞是可數名詞，單數前面要有 a／an，複數加 -s：a pen、three pens。不可數名詞（液體、材料、抽象的東西）沒有複數，要用單位來數：a glass of milk、two pieces of paper。

Countable nouns take a / an or -s: a pen, three pens. Uncountable nouns (liquids, materials, ideas) have no plural; count them with units: a glass of milk.

注意事項

• some 用在肯定句，any 用在否定句和疑問句：I have some cookies. ／ Do you have any questions?
  some in statements, any in negatives and questions: I have some cookies. / Do you have any questions?
• 不規則複數：man → men、child → children、foot → feet、tooth → teeth。
  Irregular plurals: men, children, feet, teeth.

常見錯誤

• ✗ I need some informations.
  ✓ I need some information.
  information 是不可數名詞，沒有 -s。
  information is uncountable: no -s.
• ✗ There are three childs.
  ✓ There are three children.
  child 的複數是 children。
  child's plural is children.

例句

練習

在 Hanabiの小天地 聽例句的錄音、做 3 題練習，答對 2/3 就算學會，進度會記下來。