briefcase學測 L5KK [ˈbriˌfkes] ｜ /ˈbriˌfkeɪs/
公事包；手提箱
商務場景必備名詞，新聞與閱讀常考字
The lawyer opened his briefcase and took out the secret documents.
律師打開公事包，拿出秘密文件。
一個畫面：手持長方形硬質公文箱
手提握把握住頂部把手隨身攜帶
長方硬殼硬質結構保護內部文件平整
裝載公文收納重要合約、文件或電腦
義項
商務公事包B2noun公事包；手提箱
He arrived at the meeting with a black leather briefcase in hand.
他手拿黑色皮革公事包抵達會議室。
leather briefcaseheavy briefcaseopen a briefcase
片語
leather briefcase皮質公事包 →皮革材質的公事包
carry a briefcase手提公事包 →隨身提著公事包
pack a briefcase整理公文 →將文件放進公事包
你會不會這樣說？
The lawyer took out the contract from his leather ___ before signing. (briefcase / backpack)
看答案
briefcase
briefcase 是手提公事包，常用於放文件；backpack 是後背包。
He carried a heavy briefcase to the office. 句中的 briefcase 是什麼意思？(A) 行李箱 (B) 公事包 (C) 錢包
看答案
(B)
briefcase 指攜帶文件或電腦的手提公事包。
順路看看
suitcase — 裝衣服的旅行箱，體積通常比公事包大backpack — 雙肩後背包，適合學生或休閒活動多益練習
本區為多益情境練習，與上方釋義獨立編寫
情境例句
拜訪客戶前準備
Elaine put the product brochures in her briefcase before leaving for the client's office.
Elaine 出發前往客戶辦公室前，把產品型錄放進公事包。
會議室失物
Someone left a brown briefcase under the conference table.
有人把一個棕色公事包遺留在會議桌下。
詞族
briefcase noun (singular) 公事包・briefcases noun (plural) 公事包（複數）
四選一
These ____ are large enough to hold laptops and presentation folders.
看答案
briefcases
These 與 are 搭配複數名詞 briefcases。briefcase 是單數；briefcase's 與 briefcases' 是所有格，此句沒有可承接或省略的被所有名詞，因此皆不適用。
同義改寫
Nina packed the meeting documents into her briefcase. → Nina put the meeting documents in her briefcase.
此處 packed 與 put 都描述把會議文件放進公事包，文件、容器與動作結果相同。
The visitor entered the office carrying a leather briefcase. → The visitor entered the office with a leather briefcase.
改寫保留訪客攜帶皮革公事包進入辦公室的意思，不限定以手提或肩背等方式攜帶。