〜でいらっしゃる

to be；（a polite expression）

1. Overview

"〜でいらっしゃる" is a keigo (敬語) form that elevates the status of the subject. It is commonly used when addressing or referring to someone of higher social standing or in formal contexts.

2. Structure

• Noun + でいらっしゃる
  This structure combines a noun with "で" (the copula) and "いらっしゃる," which is the honorific form of the verb "いる" (to be).

3. Usage Explanation

• Politeness and Respect: Using "〜でいらっしゃる" shows great politeness and respect when talking about others.
• Formal Situations: It is particularly suitable in formal situations such as meetings, speeches, or interactions with superiors.

4. Example Sentences

1. 田中さんは社長でいらっしゃいます。
   (Tanaka-san is the president.)
2. 先生はご高齢でいらっしゃる。
   (The teacher is of advanced age.)
3. こちらが山田さんでいらっしゃいます。
   (This is Mr. Yamada.)

5. Important Points

1. This expression should be avoided when referring to oneself to maintain humility.
2. Ensure the context is formal and requires showing respect to others when using this structure.

6. Similar Grammar

• 〜でございます: Another polite expression used for self-introduction or in formal contexts to refer to oneself.
  • Example: 私は山田でございます。
    (I am Yamada.)

7. Alternative Grammar

• 〜です: A standard polite expression used in everyday conversation but is less formal than "〜でいらっしゃる."
  • Example: 私は山田です。
    (I am Yamada.)

8. Summary

"〜でいらっしゃる" is an expression used to show respect towards others, suitable for formal situations to demonstrate respect and politeness toward the subject.