喜樂美語
  1. 1aB2/ˈɑːpʃənəl/ · /ˈɒpʃənəl/可選的

    If something is optional, you can choose to do or use it, but you do not have to.

    示範例句 · Example

    Art is optional this term — you don't have to take it.

    逐字藝術這學期是可選的——你不一定要修它。

    「optional」是「可以選、不一定要」——規則或菜單把選擇權留給你。常見：optional courses（選修課）、optional for students（對學生是可選的）、optional extra（可加購的選配）。跟 compulsory（必修／強制）對看最清楚；voluntary 比較偏「自己想做、常為了幫忙」。日常口語也常說 you don't have to…。

    常見搭配

    • optional courses / modules

      選修課／選修單元

      classes you can choose to take, not ones you must take

      She chose three optional courses this year.

    • optional for someone

      對某人是可選的

      not required for that person; they may choose

      The club is optional for new students.

    • an optional extra / extras

      可選加購／選配

      something you can choose to add, often for more money

      Tinted windows are an optional extra.

    • optional excursions / trips

      可選行程／可加購旅遊

      side trips you can join if you want

      There are optional excursions every afternoon.

    • attendance is optional

      出席是可選的

      you may come, but you are not forced to

      Attendance at the meeting is optional.

    意思相近

    electivevoluntarynoncompulsorynonmandatory

    意思相反

    compulsorymandatoryrequiredobligatory

core核心畫面

Picture a form where one box has a star and another does not: the starred one you must fill in, the other is yours to leave blank. Optional marks that second box — the door is open, and walking through it is up to you.

可以想成：表格上有些欄位打了星號、有些沒有。打星號的一定要填，沒打的可以留白。optional 標記的就是後者：門是開的，走不走由你。相反的說法是 compulsory（英式，常用於學校科目）或 mandatory / required（正式規定）。

容易混在一起的字在訂閱裡。容易混在一起的字需要訂閱帳號。

同家族的字

比較級 more optional最高級 most optional

意思相近

electivevoluntarynoncompulsorynonmandatory

意思相反

compulsorymandatoryrequiredobligatory

原始詞典資料3 筆記錄

以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。

optionaladj/ˈɒp.ʃə.nəl/

  • 1

    Not compulsory; left to personal choice; elective.

    • On that beach clothing is entirely optional.
    • Do you need to wear eyeliner? As with any makeup step, eyeliner is completely optional. From an artistic perspective, if you are wearing eyeshadow, I almost always recommend wearing eyeliner, unless your eyelids and eyelashes are obscured by the eyebrow area. Eyeliner is a basic part of an eye-makeup design because it shapes and defines the eyes and makes the eyelashes look thicker.

optionalnoun/ˈɒp.ʃə.nəl/

  • 1

    Something that is not compulsory, especially part of an academic course.

  • 2

    computingengineeringmathematicsIn various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.

    • In functional languages, there is a data type called the option type, also called the maybe type. Its purpose is to encapsulate a value, which is returned from a function. […] In Java 8, the Optional class has been added to serve as an option type.

摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。