?釋義：

Forthwith是一個副詞，意為“立即，馬上，立刻”。它來自于古英語的詞匯“forwi”，由“for”（向前）和“wi”（向前）兩個部分組成。在現代英語中，它通常用來表示某件事情必須立即或馬上發生，沒有任何延遲。

用法：

Forthwith通常用作一個副詞修飾動詞，放在句子中的末尾。，“Please send the documents forthwith.”（請立即發送文件。）它也可以用來修飾形容詞或其他副詞，，“We need a decision forthwith.”（我們需要立即做出決定。）

此外，在法律文書或正式文件中，forthwith也經常被使用。，“The defendant must appear in court forthwith.”（被告必須立即出庭。）在這種情況下，forthwith表示某件事情必須在規定的時間內完成。

例句參考：

1. The fire alarm sounded and we were told to evacuate the building forthwith.

2. The CEO demanded that the report be completed forthwith.

3. The soldiers were ordered to return to their base forthwith.

4. The judge ruled that the accused be released from custody forthwith.

5. When the storm hit, we were instructed to take shelter forthwith.

隨機風格：

1. As soon as the boss heard about the mistake, he demanded that it be fixed forthwith.

2. The teacher instructed the students to submit their assignments forthwith or face a penalty.

3. The doctor ordered the patient to take the medication forthwith in order to avoid any complications.

4. The police officer commanded the suspect to s running and surrender forthwith.

5. As per the new regulations, all employees must complete their safety training forthwith.

總結：

Forthwith是一個常用的英語副詞，表示某件事情必須立即發生或完成，沒有任何延遲。它可以修飾動詞、形容詞或其他副詞，在法律文書或正式文件中也經常被使用。使用時要注意上下文，避免過度使用，以免影響文章的流暢性。