constant

constant — 形容詞

1. Occurring again and again over a period of time, or continuing without stopping.

1.形容詞B1
釋義

持續不斷的

一直發生或持續不中斷的

Occurring again and again over a period of time, or continuing without stopping.

例句

The constant noise from the construction site made it hard for Otis to concentrate on his homework.

建築工地的持續噪音讓 Otis 很難專心做功課。

attributive: constant + noun (noise)

Isabela grew tired of her brother's constant teasing about her new haircut.

Isabela 對哥哥不斷嘲笑她的新髮型感到厭煩。

同義詞
  • continuous

    focuses on the unbroken nature, while 'constant' can also mean repeatedly occurring with gaps

  • persistent

    often carries a slightly negative connotation, like an unwelcome or annoying continuation

  • ongoing

    emphasises that something is still in progress, not necessarily frequent

反義詞

文法句型

constant + noun

be + constant

用法筆記

Commonly modifies nouns for sounds, actions, or conditions that happen without a break (noise, crying, pain, stream, reminders, interruptions).

常見錯誤

❌The constant rain had finally stopped' (using 'constant' for rain that lasted a while but eventually ended).
✅The steady rain had finally stopped
💡'constant' implies unbroken or endlessly repeated; 'steady' works better for continuous but finite events.

2. Remaining at the same level, amount, or rate without changing over time.

2.形容詞B1
釋義

恆定不變

數量或程度穩定不變的

Remaining at the same level, amount, or rate without changing over time.

例句

The oven must be kept at a constant temperature for the cake to bake evenly.

烤箱必須保持攝氏一百六十度的恆溫，蛋糕才能烤得均勻。

collocation: constant temperature

Matthew's body weight stayed constant even though he started eating more vegetables.

Matthew 雖然開始多吃蔬菜，但他的體重一直維持不變。

同義詞
  • stable

    implies not only no change but also no risk of change; slightly less formal than 'constant'

  • steady

    focuses on evenness of movement rather than fixed value; works well for speed, progress, or rhythm

  • uniform

    suggests every part or unit is the same across time or space; more formal

反義詞

文法句型

constant + noun

remain + constant

stay + constant

用法筆記

Frequently used with verbs like remain, stay, keep, and hold. Subject is typically a measurable quantity such as temperature, speed, price, level, or rate.

常見錯誤

❌The recipe says to keep the water constant.
✅The recipe says to keep the water at a constant temperature.
💡'constant' needs a clear reference to the quality that stays unchanged (temperature, level, flow, etc.).

3. Faithful and dependable in a personal relationship, especially as a friend or co

3.形容詞B2
釋義

忠誠可靠

對朋友或夥伴始終忠誠可靠的

Faithful and dependable in a personal relationship, especially as a friend or companion.

例句

Throughout the difficult years, Dario remained a constant friend who never let Sora down.

在那些艱難的年頭裡，Dario 始終是 Sora 忠實的朋友，從未讓她失望。

attributive: constant friend / constant companion

Grandfather's constant companion was an old sheepdog that followed him everywhere around the farm.

爺爺的忠實夥伴是一隻老牧羊犬，農場各處都跟著他。

同義詞
  • faithful

    the most direct synonym; can be used both before a noun and after a linking verb with 'to'

  • loyal

    emphasises devotion and allegiance; slightly broader in use than 'constant'

  • steadfast

    more formal and literary; suggests firm determination in the face of difficulty

反義詞
  • unfaithful

    breaks a promise of loyalty or commitment

  • fickle

    changes feelings or loyalty quickly and often

文法句型

constant + noun (person)

用法筆記

Almost always used before a noun (attributive position). This sense is mainly restricted to nouns referring to people (friend, companion) or personified things (presence, source of comfort). Distinguish from sense 1: a 'constant friend' is loyal, not merely someone who frequently visits.

常見錯誤

❌She is constant to her husband.
✅She is a constant partner.
💡This sense of 'constant' is not used with the preposition 'to'; use 'faithful to' instead.

constant — 名詞