no

• 限定词，表示完全没有或数量为零；是 'some' 或 'any' 的否定对应词。注意：'no' 也可作副词（用于回答）或助词。

A determiner used with singular, plural countable, and uncountable nouns to indicate the complete absence or zero quantity of something. It functions as a negative counterpart to 'some' or 'any' and can also express prohibition or denial when used with gerunds or in imperative contexts.

1. Determiner (absence with countable nouns)A1formal

   Used before plural countable nouns to indicate that there are zero instances or none of the specified items.

   限定词（可数名词的零数量）

   • There are no cookies left in the jar.
   • No students were absent yesterday.
   • I have no questions at this time.

2. Determiner (absence with uncountable nouns)A1formal

   Used before uncountable nouns to indicate that there is zero amount or none of the specified substance, concept, or quality.

   限定词（不可数名词的零量）

   • There is no water in the bottle.
   • She showed no interest in the proposal.
   • We have no time to waste.

3. Determiner (prohibition or denial)A2formal

   Used before gerunds or in signage/imperative contexts to express that an action is forbidden, not permitted, or denied.

   限定词（禁止或否认）

   • No smoking in this area.
   • No entry without authorization.
   • No parking on Sundays.

4. Determiner (emphatic negation)B1informal

   Used to strongly negate or deny the existence, possibility, or relevance of something, often for rhetorical or emphatic effect.

   限定词（强调否定）

   • There is no way I'm agreeing to that.
   • He is no friend of mine.
   • This is no time for jokes.

5. Adverbial usage (standalone negative response)A1informal

   Used as a standalone word to give a negative answer to a yes/no question or to express disagreement. (Note: This is an adverbial/pragmatic usage included for completeness).

   副词用法（独立否定回答）

   • Are you coming? No, I'm staying home.
   • No, that's not what I meant.
   • No, thank you.