Learn Japanese grammar: ことだから (koto dakara). Meaning: because; since ~.
- Because of [A], [B] ~
- Since [A], [B] ~
There are two different ways that this grammar point can be used:
Usage Type #1) Guess / inference
This expresses a guess or inference, and can only be used with nouns.
よくできる彼女のことだから、合格は間違いないだろう。
yoku dekiru kanojo no koto dakara, goukaku wa machigai nai darou.
She will surely pass the exam because she does everything well.
Usage Type #2) Because of actual situation
全員そろったことだから、時間前だけれど始めましょうか。
zenin sorotta koto dakara, jikan mae dakeredo hajimemashouka.
It is not time to start yet, but since everyone is here, shall we go ahead and start?
Note, this second usage type can substitute ことだから (koto dakara) with ことだし (koto dashi), which is more common in spoken Japanese.

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ことだから - Example Sentences 例文
Each example sentence includes a Japanese hint, the romaji reading, and the English translation.
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Example #1
それは、私にとって重要なことだから答えて。
Example #2
あなたのことだから上々でしょう。
Example #3
明るい彼女のことだから、どこへ行ってもすぐ友達ができるでしょう。
Example #4
急を要することだから急いでください。
Example #5
ケチで有名な彼のことだから百円だって貸してくれないだろうな。
Example #6
もう誰も来ないことだし、店を閉めよう。
Example #7
君は遅刻したが, 昨夜の後でのことだから無理はない。
Vocabulary List 語彙
Kanji 漢字 | Kana カナ | English 英語 |
---|---|---|
明るい | あかるい | bright; cheerful |
彼女 | かのじょ | her; she |
友達 | ともだち | friend |
誰も | だれも | nobody |
店 | みせ | shop; store |
閉める | しめる | to close |
ケチ | けち | stingy |
有名 | ゆうめい | famous |
彼 | かれ | he; him |
貸す | かす | to lend |
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