喜樂美語
  1. 1vA2/səbˈtrækt/減去；扣除

    To take one number or amount away from a larger one.

    示範例句 · Example

    If you subtract 30 from 45, you get 15.

    逐字如果你從 45 減去 30，你得到 15。

    「subtract」是數學裡「從一個比較大的數（或數量）裡拿走另一個數」的動詞——算出還剩多少。固定句型是 subtract A from B（從 B 減去 A）。take away 意思接近，但比較口語；minus 用在兩個數字中間（30 minus 5）；deduct 比較正式，常講扣錢、扣分。核心畫面可以想成：從比較大的那堆裡拿走一小塊，看還剩多少。

    常見搭配

    • subtract something from something

      從…減去…

      take one number or amount away from a larger one

      Subtract 12 from 32.

    • add or subtract / add and subtract

      加減／做加減法

      do addition and subtraction (basic number work)

      The sums are open to anyone who can add or subtract.

    • subtract the cost / amount from the total

      從總額減去費用／金額

      take a money amount away from a larger sum

      Then subtract the cost of the loan from the total.

    • subtract points / marks

      扣分／減去分數

      take points away from a score

      The teacher may subtract marks for messy writing.

    • be subtracted from

      被從…減去

      be taken away from a larger number or amount

      Tax is subtracted from his monthly pay.

    意思相近

    take awaydeductminusremove

    用法接近

    take fromknock offreduce by

    意思相反

    addplus

core核心畫面

Picture a pile and a hand taking some of it away, leaving a smaller pile. What matters in English is the direction the sentence runs: you subtract the small number FROM the big one. Get that order right and the word gives you no further trouble.

可以想成：一堆東西，有隻手拿走一部分，剩下比較小的一堆。這個字在英文裡真正要留意的是方向：你是把小的數字「從」大的數字裡減掉——subtract 5 from 12。把這個順序記牢，這個字就不會再出錯了。

同家族的字

過去式 subtracted過去分詞 subtracted-ing subtracting三單 subtracts

意思相近

take awaydeductminusremove

用法接近

take fromknock offreduce by

意思相反

addplus

原始詞典資料1 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。

subtractverb/səbˈtɹækt/

  • 1

    arithmeticTo remove or reduce; especially to reduce a quantity or number.

    • If you subtract the $100 for gas from the total cost, it was a fairly inexpensive trip.
    • I could add and subtract and multiply and divide, but I entered the wilderness when words became equations. […] The axioms of arithmetic imply that when you expand (a + b)², for example, you get a² + 2ab + b² in the following way: (a + b)² is equal to (a + b)(a + b). Each term in one parentheses multiplies the terms in the other: a × a = a² ; a × b = ab; b × a = ab; b × b = b². Combining the terms, a² + ab + ab + b² = a² + 2ab + b². In a similar way, a² – b², a squared number subtracted from another squared number, called a difference of squares, becomes (a – b)(a + b), which becomes a² + ab – ab – b², which is a² – b².

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。