於

At or in (Classical)

Level 5Sounds Like jyu1

於 (jyu1) is the formal, literary version of the colloquial 喺 (hai2). It is used to indicate 'at', 'in', or 'on' in news, announcements, and formal writing.

How It Works

於 (jyu1) is a hallmark of formal Cantonese diglossia. It is not 'Mandarin', but rather a classical element preserved for formal registers.

1. Usage in Time and Place
It attaches to noun phrases representing time (e.g., 於二零二四年) or place (e.g., 於香港). In spoken Cantonese, you will hear this most often in pre-recorded announcements at MTR stations or airports.

2. Syntactic Positions

  • Pre-verbal: [Subject] + 於 + [Time/Place] + [Verb]. Example: 該名員工於去年離職 (That employee left the job last year). Note that formal subjects like 該名員工 (goi1 ming4 jyun4 gung1) are used instead of colloquial pronouns to match the register.
  • Post-verbal: [Verb] + 於 + [Time/Place]. This is common with formal verbs like 出生 (ceot1 sang1 - born), 畢業 (bat1 jip6 - graduate), or 位於 (wai6 jyu1 - located at).

3. Comparative Usage
In formal writing and news reports, 於 (jyu1) functions as 'than' in comparisons. It follows adjectives like 多 (do1 - more), 少 (siu2 - less), or 高 (gou1 - higher). For example, 多於 (do1 jyu1) means 'more than'.

4. Root for Conjunctions
於 (jyu1) serves as the core component for several essential formal conjunctions, including 關於 (gwaan1 jyu1 - regarding), 由於 (jau4 jyu1 - due to), and 至於 (zi3 jyu1 - as for).

5. Register Awareness
Using 於 (jyu1) in a casual conversation with friends will sound robotic or overly 'bookish'. Conversely, using 喺 (hai2) in a legal document or a formal speech might sound too informal. It is often paired with other formal markers like 將會 (zoeng1 wui5) instead of colloquial markers.

Examples (5)

  1. 班機將於十分鐘後起飛。

    The flight will take off in ten minutes.

    Word by Word: Class [of] plane will at ten minute after rise fly.

    This is a typical formal announcement style. Note the use of 將 (zoeng1) and 於 (jyu1) together to maintain a high register.

  2. 本公司成立於一九九七年。

    This company was established in 1997.

    Word by Word: This company establish at one nine nine seven year.

    In formal or biographical contexts, 於 (jyu1) often follows the verb 成立 (sing4 laap6 - establish).

  3. 該建築物位於中環。

    The building is located in Central.

    Word by Word: That building located at Central.

    位於 (wai6 jyu1) is a fixed formal compound meaning 'to be located at'.

  4. 香港人口多於七百萬。

    The population of Hong Kong is more than seven million.

    Word by Word: Hong Kong population more than seven hundred ten-thousand.

    In formal contexts, 於 (jyu1) acts as a comparative marker meaning 'than', often paired with 多 (do1 - more) or 少 (siu2 - less).

  5. 會議將於聽日下晝三點舉行。

    The meeting will be held at 3 PM tomorrow.

    Word by Word: Meeting will at tomorrow afternoon three o'clock hold.

    Even when using colloquial time words like 聽日 (ting1 jat6), 於 (jyu1) can be used if the overall context is a formal notice.

Common Mistakes

  • Mixing formal '於' with colloquial sentence-final particles.

    我於香港住㗎。
    我喺香港住嘅。

    於 (jyu1) belongs to a formal register that usually avoids colloquial particles like 㗎 (gaa3). If you are speaking casually enough to use 㗎, you should use 喺 (hai2).

  • Incorrect negation of '於'.

    佢唔於香港出生。
    佢唔係喺香港出生。

    於 (jyu1) is rarely negated directly with 唔 (m4). In formal contexts, negation usually requires formal words like 非 (fei1) or 不 (bat1), or the sentence is rephrased using colloquial forms.

How It Connects

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於Level 5At or in (Classical)

Learn This First

To understand 於, you must first be familiar with the colloquial equivalent 喺 used for time and location. Since 於 is a formal or classical variant, understanding the general concept of written versus spoken Cantonese is also essential.

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