Use 説明する to make a matter clear to someone, from a rule in class to a plan at work.
The idea
説明する is a する verb. Mark what is explained with を and the person addressed with に; について can introduce the topic. Conjugate する: 説明します, 説明しました and 説明して.
| Dictionary form | Polite non-past | Polite negative | Polite past | て form |
|---|---|---|---|---|
| 説明する | 説明します | 説明しません | 説明しました | 説明して |
Examples
- 先生は学生に文法を説明します。The teacher explains the grammar to the students.
- 使い方をもう一度説明してください。Please explain how to use it once more.
- 彼は遅れた理由を説明しました。He explained why he was late.
- 会議で新しい計画について説明します。I will explain the new plan at the meeting.
- 担当者は料金をまだ説明していません。The person in charge has not explained the fees yet.
- 図を使って、仕組みを説明します。I explain how it works using a diagram.
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Watch out
Do not mark the listener with を in the basic pattern: 学生に文法を説明する. 説明する emphasizes making something clear; 教える can also mean teaching a skill or telling someone information.
Try it yourself
説明する→ます:_
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説明します
説明します is the polite non-past form; context determines present or future.
説明する→て:_
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説明して
説明して is the て form, used for example before ください to make a request.
先生は学生_文法を説明します。(に/を)
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に
に marks the students as the people receiving the explanation; を marks the grammar explained.
Practice round
Answer questions, then rebuild Japanese sentences where available. We keep your score.
説明する→ます:_
説明する→て:_
先生は学生_文法を説明します。(に/を)
Tap the words in the right order.
Tap the words in the right order.
Tap the words in the right order.
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Explain a procedure to a friend in Japanese, then change the sentence to polite past and check both particles.

