N2161/217

ことだから

名詞のことだから代名詞のことだからNoun + の + ことだから

Meanings

  • Given who X is, it’s not surprising that...
  • Knowing X, one would expect that...
  • Because of X’s usual character, ...
  • It’s exactly because of X that...

About this pattern

Explanation

ことだから is used to infer or explain a situation based on the known character, role, or typical behavior of a person or thing referenced in the preceding clause. The speaker assumes the listener shares the same understanding of that person or thing. It often introduces a prediction, expectation, or justification about another event or action grounded in that familiar trait or circumstance.

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Example sentences

田中さんのことだから、遅れることはないだろう。

Knowing Tanaka, he probably won't be late.

山田さんのことだから、きっと相談に乗ってくれるはずだ。

Considering Yamada, I’m sure he’ll be glad to help.

あの店のことだから、今日は混むだろう。

That shop, given its popularity, will be crowded today.

彼のことだから、計画をきちんと立ててくれるだろう。

Because of him, he’ll surely make a solid plan.