how fast

/haʊ fɑːst/

翻译: 用于询问速度、快慢或变化速率的疑问短语。由疑问副词“how”和形容词“fast”组成，与“speed”“rate”等名词连用时可作复杂的定语短语。

1 个条目

determiner

/haʊ fɑːst/A1formal

Вопросительная фраза для запроса скорости, быстроты движения или темпа изменений. Примечание: 'How fast' состоит из наречия 'how' и прилагательного 'fast'; при использовании с существительными типа 'speed', 'rate' функционирует как сложная определительная фраза.
Frase interrogativa para preguntar por la velocidad, rapidez de movimiento o ritmo de cambios. Nota: 'How fast' se compone del adverbio 'how' y el adjetivo 'fast'; al usarse con sustantivos como 'velocidad' o 'ritmo', funciona como una frase determinativa compleja.
Phrase interrogative utilisée pour demander la vitesse, la rapidité de déplacement ou le rythme de changement. Note : 'How fast' se compose de l'adverbe 'how' et de l'adjectif 'fast' ; employé avec des noms comme 'speed', 'rate', il fonctionne comme une locution déterminative complexe.
Fragephrase zur Erfragung der Geschwindigkeit, Schnelligkeit einer Bewegung oder des Temps von Veränderungen. Hinweis: 'How fast' besteht aus dem Adverb 'how' und dem Adjektiv 'fast'; in Verbindung mit Substantiven wie 'speed', 'rate' fungiert es als komplexe Bestimmungsphrase.
Frase interrogativa usada para perguntar a velocidade, a rapidez de um movimento ou o ritmo de mudanças. É formada pelo advérbio 'how' e pelo adjetivo 'fast'; quando usada com substantivos como 'speed' ou 'rate', funciona como locução determinativa complexa.
用于询问速度、快慢或变化速率的疑问短语。由疑问副词“how”和形容词“fast”组成，与“speed”“rate”等名词连用时可作复杂的定语短语。
عبارة استفهامية تُستخدم للسؤال عن السرعة أو معدل الحركة أو وتيرة التغير. تتكون من أداة الاستفهام 'كيف' والصفة 'سريع'، وتعمل كعبارة وصفية مركبة عند اقترانها بأسماء مثل 'السرعة' أو 'المعدل'.

An interrogative phrase used to ask about speed, velocity, or rate of movement/change. Note: 'How fast' is primarily an interrogative adverbial phrase consisting of 'how' + the adjective 'fast'. When used before nouns like 'speed', 'rate', or 'pace', it functions as a complex determiner phrase modifying those nouns. This entry focuses on its determiner-like usage with nominal complements.

Interrogative determiner (physical speed)A1formal
Used before nouns denoting motion or velocity (e.g., 'speed', 'pace', 'rate') to ask about measurable physical speed of movement.
疑问限定词（物理速度）
- How fast a speed can this car reach?
- How fast a pace are you planning to run?
- How fast a rate does the river flow?
Interrogative determiner (rate of change/progress)B1formalbusiness
Used before abstract nouns to ask about the rate, tempo, or rapidity of a process, change, or development.
疑问限定词（变化/进展速度）
- How fast a growth rate is sustainable?
- How fast a change can the system handle?
- How fast a progress have we achieved?
Adverbial usage (standalone speed inquiry)A1informal
Used without a following noun to ask about speed directly. The noun is implied by context. (Note: This is the most common adverbial usage, included for completeness).
副词用法（独立询问速度）
- How fast can you type?
- How fast does the train go?
- How fast did you finish the race?
Indirect question usageB1formal
Used to introduce a noun clause that reports a question about speed, functioning as the object of verbs like 'know', 'ask', 'wonder'.
间接疑问用法
- I wonder how fast he can run.
- Do you know how fast the download will be?
- Tell me how fast you need this done.
Exclamatory or emphatic useB2informal
Used in exclamations or rhetorical questions to emphasize the surprising extent of speed, rapidity, or urgency.
感叹或强调用法
- How fast a time you ran that mile!
- How fast do you expect me to work?
- How fast the world is changing!