JLPT N3 Intermediate
何故なら
「なぜなら」
The reason is; that is because
Readings
Conjunction
"The reason is..." / "Because..."
Introduces a justification or cause for a preceding statement, specifically signaling the logical basis of an argument.
Example
彼 は パーティー に 来ません 。 なぜなら 、 仕事 が ある から です 。
He isn't coming to the party. The reason is that he has work.
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