「～に違いない」- Strong Assertion
Explanation
「に違いない」 is a grammatical structure used to express a strong assertion or judgment, meaning "must be" or "certainly." This expression is often used to convey the speaker's confident judgment about something.
Grammar Pattern
| Grammar Point | Connection | Explanation |
|---|---|---|
| ～に違いない | Plain form of verbs / Plain form of い-adjectives / Stem of な-adjectives / Nouns | Used to express the speaker's strong assertion about something based on evidence or observation. Commonly used in written language and formal situations. |
Basic Usage
- Plain form of verbs + に違いない
- Plain form of い-adjectives + に違いない
- Stem of な-adjectives + に違いない
- Nouns + に違いない
Examples
彼 は今日 は疲 れているに違いない。- Kare wa kyou wa tsukareteiru ni chigainai.
- He must be tired today.
彼女 の表情 から見 ると、何 か秘密 があるに違いない。- Kanojo no hyoujou kara miru to, nanika himitsu ga aru ni chigainai.
- Judging from her expression, she must have some secret.
彼 の話 は全部 嘘 に違いない。- Kare no hanashi wa zenbu uso ni chigainai.
- What he said must all be lies.
- この
静 けさから、誰 もいないに違いない。 - Kono shizukesa kara, daremo inai ni chigainai.
- From this quietness, there must be no one here.
Deep Dive
「に違いない」 emphasizes the speaker's confidence in their assertion, often based on observation, speculation, or experience. This expression is not only common in everyday conversation but also frequently appears in literary works. It enhances the authority and credibility of the statement.
Real-Life Scenarios
- When discussing the cause of an event, for example: "
彼 は残業 しているに違いない。" (He must be working overtime.) - When speculating about someone's emotions, for example: "
彼女 は悲し んでいるに違いない。" (She must be sad.)
Summary
「に違いない」 is a grammatical structure used to express a strong assertion, suitable for various situations. It emphasizes the speaker's confident judgment about a situation and is widely used in both everyday conversation and written language. Understanding this grammar will help you express your certainty about things more effectively.