なぜなら
なぜなら
conjunction
because, the reason is
1.
because, the reason is that
Used to introduce an explanation or reason for something stated before.
彼は来なかった。なぜなら病気だったからだ。
He didn't come. The reason is that he was sick.
Often followed by 〜からだ
なぜなら、私には時間がないからです。
Because I don't have time.
成功した。なぜなら努力を続けたからだ。
I succeeded, because I kept making an effort.
その計画には反対だ。なぜなら費用がかかりすぎるからだ。
I'm against that plan. The reason is that it costs too much.
彼女は信頼できる人だと思う。なぜなら、いつも約束を守り、困っている人を助けるからだ。
I think she is a trustworthy person. The reason is that she always keeps her promises and helps people in need.
USAGE:
なぜなら typically starts a new sentence or clause and is followed by the reason, often ending with からだ/からです.
PATTERN:
[Statement]. なぜなら〜からだ/からです。
SIMILAR EXPRESSIONS:
- なぜなら (because, the reason is - formal/written)
- だって (because - casual)
- というのは (the reason is - explanatory)
- というのも (the reason being - explanatory)
NOTE:
なぜなら is more common in written Japanese and formal speech. In casual conversation, だって or simply 〜から is more common.