Meaning & Usage
The Japanese grammar pattern 「ということだ」 (to iu koto da) is a fundamental N3-level 表現 (expression). It serves two main functions: explaining or clarifying something, and reporting 情報 (information) or summarizing what was said or heard. Essentially, it takes a statement, question, or concept and frames it as "the fact that..." or "it means that...". This allows speakers to step back from a direct statement and comment on its implication, meaning, or source.
When used for explanation or clarification, 「ということだ」 helps to rephrase, summarize, or draw a 結論 (conclusion) from previously stated information. Suppose someone explains a complex 状況 (situation). You might want to confirm your 理解 (understanding) of it, or perhaps explain its essence to someone else. In such cases, 「つまり、〜ということですね。」 (Tsumari, ~ to iu koto desu ne. - "So, in other words, it means that...") is a very common phrase. It helps solidify understanding and present the core message clearly. The 英語 (English) equivalents here would be "It means that...", "The point is that...", "What it comes down to is...", or "In other words...". Think of it as putting a label on a piece of information, signifying "this is what it means" or "this is the core message."
For reporting information or conveying hearsay, 「ということだ」 is used to state something that one has heard, read, or learned from an external source. Unlike the more direct 「〜そうだ」 (sou da), which often conveys information from immediate observation or a very close source, 「ということだ」 suggests a more interpreted or summarized report. This pattern is frequently used when conveying news, rumors, or information from a third party. It doesn't necessarily vouch for the absolute truth of the information, but rather presents it as "it is said that..." or "I heard that...". It suggests that the information exists as a fact or report, rather than a personal observation. This 使い方 (usage) is less about direct quotation and more about conveying the "gist" or "substance" of what was communicated.
文脈 (Contextually), 「ということだ」 can range from formal to informal. Its politeness level depends on the preceding plain form and the final ending (e.g., 「〜ということです」 for politeness, 「〜ということか」 for questioning). In written reports or academic texts, it's frequently employed to present findings or conclusions. In spoken Japanese, it's extremely useful for confirming understanding, summarizing lengthy discussions, or indirectly conveying information. It adds a degree of objectivity or detachment, framing the preceding statement as a 'matter' or 'fact' for discussion. This versatile 表現 is indispensable for effective communication in diverse situations, providing clarity and nuance in both explanations and reports.
Structure & Formation
The 文法 (grammar) pattern 「ということだ」 is attached to the plain form (dictionary form, ta-form, nai-form) of 動詞 (verbs), 形容詞 (adjectives), and 名詞 (nouns). This flexibility allows it to express a wide range of statements and ideas. The choice of plain form is critical, as it sets the tense and polarity of the statement being explained or reported.
Here's a breakdown of its 接続 (formation):
| 品詞 (Word Type) | Plain Form | Example |
|---|---|---|
| 動詞 (Verb) | Plain Form (Present/Past, Positive/Negative) | 行くということだ (It means to go / I heard he goes)
行ったということだ (It means he went / I heard he went) 行かないということだ (It means not to go / I heard he won't go) |
| い-形容詞 (i-Adjective) | Plain Form (Present/Past, Positive/Negative) | 高いということだ (It means it's expensive / I heard it's expensive)
高くなかったということだ (It means it wasn't expensive / I heard it wasn't expensive) |
| な-形容詞 (na-Adjective) | Stem + だ + ということだ | 静かだということだ (It means it's quiet / I heard it's quiet)
静かだったということだ (It means it was quiet / I heard it was quiet) |
| 名詞 (Noun) | 名詞 + だ + ということだ | 学生だということだ (It means he is a student / I heard he is a student)
学生だったということだ (It means he was a student / I heard he was a student) |
It's important to remember that the 「だ」 before 「ということだ」 for な-形容詞 and 名詞 is usually retained. This is because it represents the plain affirmative present tense for these word types. While it might be omitted in some casual contexts or before phrases like 「と聞きました」, for 「ということだ」, including 「だ」 for the plain form is generally standard when stating a fact or explaining. The politeness level is then determined by the ending: 「〜ということだ」 (plain), 「〜ということです」 (polite), 「〜ということらしい」 (seems to be the case), 「〜ということでしょう」 (probably means...).
Example Sentences
Explanation and Clarification
彼が来られないということは、会議は中止だということだ。
Kare ga korarenai to iu koto wa, kaigi wa chuushi da to iu koto da.
The fact that he can't come means the meeting is cancelled.
先生の言うことは、もっと練習が必要だということですね。
Sensei no iu koto wa, motto renshuu ga hitsuyou da to iu koto desu ne.
What the teacher is saying means that more practice is necessary, right?
新しいルールは、もう残業ができないということだ。
Atarashii ruuru wa, mou zangyou ga dekinai to iu koto da.
The new rule means that we can no longer work overtime.
遅刻したということは、電車が遅れたということですか?
Chikoku shita to iu koto wa, densha ga okureta to iu koto desu ka?
The fact that you were late, does that mean the train was delayed?
Reporting Information / Hearsay
天気予報によると、明日は雪が降るということだ。
Tenkiyohou ni yoru to, ashita wa yuki ga furu to iu koto da.
According to the weather forecast, I heard it will snow tomorrow.
部長は来週から出張だということですよ。
Buchou wa raishuu kara shucchou da to iu koto desu yo.
I heard that the department manager will be on a business trip starting next week.
彼が日本に帰ったということは、もう会えないということだね。
Kare ga Nihon ni kaetta to iu koto wa, mou aenai to iu koto da ne.
The fact that he went back to Japan means we can't meet anymore, huh.
試験の合格率が低かったということだ。
Shiken no goukakuritsu ga hikukatta to iu koto da.
I heard that the exam's pass rate was low.
Conclusion / Deduction
あの店は毎日行列ができている。美味しいということだ。
Ano mise wa mainichi gyoretsu ga dekite iru. Oishii to iu koto da.
That store has a line every day. That means it's delicious.
スマートフォンを持っていないということは、SNSもやっていないということだね。
Sumātofon o motte inai to iu koto wa, SNS mo yatte inai to iu koto da ne.
The fact that you don't have a smartphone means you're not on social media either, right?
予約が取れなかったということは、もう満席だということですね。
Yoyaku ga torenakatta to iu koto wa, mou manseki da to iu koto desu ne.
The fact that I couldn't get a reservation means it's already full, doesn't it?
彼が一人で暮らしているということは、自立しているということだ。
Kare ga hitori de kurashite iru to iu koto wa, jiritsu shite iru to iu koto da.
The fact that he lives alone means he is independent.
Asking for Clarification
今日の授業は休講だということですか?
Kyou no jugyou wa kyuukou da to iu koto desu ka?
Does that mean today's class is cancelled?
つまり、A案で進めるということですね。
Tsumari, A-an de susumeru to iu koto desu ne.
In other words, we're proceeding with Plan A, is that right?
Common Mistakes
Mistake 1: Omitting 「いうこ」 from 「ということだ」
Using just 「〜とだ」 or a more casual contraction like 「〜てことだ」 is generally informal. While 「てことだ」 is common in casual speech, it’s not always appropriate for standard explanations or reporting.
❌ 彼は来ないとだ。
✅ 彼は来ないということだ。
Explanation: The plain form before 「とだ」 implies a very direct quotation or an abrupt conclusion. 「ということだ」 clearly marks it as an explanation, summary, or reported fact, providing a more complete and natural feel.
Mistake 2: Confusing with 「〜そうだ」 (hearsay)
While both are used for reporting information, 「〜そうだ」 typically conveys direct, unfiltered information (e.g., news, rumors) without much interpretation, often from a single source. 「ということだ」, on the other hand, is more about explaining the meaning, summarizing, or conveying a general understanding that has been derived or concluded.
❌ 彼が来ないそうだ。だから、会議は中止だそうだ。
✅ 彼が来ないということだったので、会議は中止になったということだ。
Explanation: The mistake here uses 「そうだ」 to state both the initial report and the subsequent conclusion. While 「そうだ」 is suitable for direct reporting (e.g., "I heard he's not coming"), 「ということだ」 is typically better for expressing a logical deduction or the meaning derived from that initial information. The corrected sentence means "Since he wasn't coming, it meant the meeting was cancelled," emphasizing the logical consequence rather than just reporting another piece of hearsay.
Mistake 3: Incorrect Plain Form Conjugation
「ということだ」 must always attach to the plain form of 動詞 (verbs), い-形容詞 (i-adjectives), na-形容詞 (with だ), and 名詞 (with だ). Using polite forms (e.g., 〜ます、〜です) directly before 「ということだ」 is grammatically incorrect.
❌ 先生は明日、来ませんということだ。
✅ 先生は明日、来ないということだ。
Explanation: 「来ません」 is the polite negative form. It should be changed to the plain negative form 「来ない」 before 「ということだ」. This applies to all word types.
Mistake 4: Omitting 「だ」 for Nouns/な-Adjectives
When connecting a plain form 名詞 (noun) or な-形容詞 (na-adjective) to 「ということだ」, the 「だ」 (or 「だった」 for past tense) is usually necessary to complete their plain form 表現 (expression). Omitting it can make the sentence sound ungrammatical or incomplete.
❌ 彼は医者ということだ。
✅ 彼は医者だということだ。
Explanation: 「医者」 is a 名詞. Its plain present affirmative form is 「医者だ」. Therefore, to correctly state "I heard he is a doctor" or "It means he is a doctor," 「だ」 must be included. The same rule applies to な-形容詞 (e.g., 「静かだということだ」).
Mistake 5: Overusing 「ということだ」
While versatile, 「ということだ」 can sound slightly academic or overly formal if used unnecessarily in very simple statements where a direct observation or personal feeling is being conveyed. Use it when there's a clear need to explain the meaning, summarize, or report information from an external source.
❌ 疲れているということだ。
✅ 疲れている。
Explanation: If you are simply stating that you are 疲れている (tired), a direct 「疲れている。」 is natural. Adding 「ということだ」 implies you are either explaining the meaning of being 疲れている (unlikely in this context) or reporting that someone else is 疲れている (in which case, more context is needed, e.g., 「彼は疲れているということだ。」). If it's your own state, the simple plain form is sufficient.
Cultural Notes
「ということだ」 is highly prevalent in various aspects of Japanese life, playing an indispensable role in communication. In the 職場 (workplace), especially during 会議 (meetings) or when relaying 情報 (information), you'll frequently hear phrases like 「つまり、〜ということですね。」 (Tsumari, ~to iu koto desu ne. - "So, in other words, it means that, right?") or 「A案で進めるということでよろしいでしょうか。」 (A-an de susumeru to iu koto de yoroshii deshou ka. - "So, is it correct that we proceed with plan A?"). These uses highlight its function in confirming 理解 (understanding), summarizing lengthy discussions, and ensuring everyone is on the same page. It’s a polite and effective way to seek clarification or consolidate 決定 (decisions) without sounding abrupt.
Beyond formal settings, 「ということだ」 is also common in everyday conversations. When catching up on gossip or news, a 日本人 (native speaker) might say 「彼らが結婚したということだよ。」 (Karera ga kekkon shita to iu koto da yo. - "I heard they got married.") to share 情報 they've learned, often adding a casual particle like 「よ」 or 「ね」 to soften the tone. This nuance allows for sharing information without necessarily claiming personal observation or guaranteeing its certainty, framing it as a reported fact.
Furthermore, it plays a significant role in Japanese media. 報道 (News reports) often use 「〜ということだ」 to indirectly quote sources or summarize public opinion, thereby maintaining an objective distance. For example, 「警察の発表によると、犯人は逃走中だということだ。」 (Keisatsu no happyou ni yoru to, hannin wa tousouchuu da to iu koto da. - "According to the police announcement, it means the culprit is currently at large.") This structure helps present information as verified by an authority without making the reporter seem to be making a direct claim. Understanding these 文脈 (contextual) usages is essential for communicating naturally in Japanese.
Related Grammar Points
- Wakeda: That's Why, No Wonder, It Means That (Grammar N3)
- Uchi ni: While / Before It Changes (Grammar N3)
- Nuki de (ぬきで) — Without, Leaving Out (Grammar N3)
- It's Been Decided/Scheduled: ことになっている (Grammar N3)
- Not Necessarily (Grammar N3)
- Tsui de ni: While At It, Taking The Opportunity (Grammar N3)
JLPT Tips
To master 「ということだ」 for the JLPT N3, you'll need a firm grasp of its dual functions: explaining/clarifying and reporting 情報 (information). When encountering this 文法 (grammar point) in reading comprehension or listening sections, first identify the 文脈 (context). Is the speaker rephrasing something, drawing a 結論 (conclusion), or conveying information from an external source? This will help you choose the most appropriate 英語 (English) translation or Japanese rephrasing.
Pay close attention to the plain form 活用 (conjugation) before 「ということだ」. This is a common test point. Ensure you can correctly conjugate 動詞 (verbs), い-形容詞 (i-adjectives), な-形容詞 (na-adjectives, remembering the 「だ」 for present affirmative), and 名詞 (nouns, also remembering the 「だ」 for present affirmative). Incorrect conjugation will lead to incorrect answers.
Distinguish 「ということだ」 from similar grammar patterns like 「〜そうだ」 (hearsay) and 「〜らしい」. While all three can report 情報, 「ということだ」 often presents a more generalized or interpreted understanding, or a 結論 drawn from facts, whereas 「〜そうだ」 tends to be more direct reporting of a perceived fact, and 「〜らしい」 implies a level of inference or uncertainty. Look for keywords in the surrounding text: phrases like 「つまり」 (tsumari - in short), 「要するに」 (yousuru ni - in a word), or 「〜によると」 (~ ni yoru to - according to...) often precede or follow 「ということだ」 when it's used for explanation or reporting, providing clear clues.
Finally, practice transforming sentences. Given a direct statement, try to rephrase it using 「ということだ」 to summarize or explain its 意味 (meaning). Conversely, if given a sentence with 「ということだ」, try to determine what the original, direct statement might have been. This 練習 (practice) will strengthen your intuitive grasp and prepare you for various question formats on the 試験 (exam). Don't forget that 「ということですか」 is a common question form used for clarification, making it essential to recognize.