LEARN + JAPANESE / Note 154 JLPT N5

Because (から)

から attaches after the plain form (or the polite form, in casual speech to soften a refusal) and states a reason directly, “because.” It’s the most basic and direct way to give a reason in Japanese.

In Real Life
から states a reason as a plain fact, more direct than ので, which softens the same idea into something more like a shared, polite explanation. から works fine in casual speech and in giving a blunt, matter-of-fact reason.
In Real Life
から can also stand alone at the very end of a sentence, added on after the fact as an afterthought explanation, “because,” almost like English tacking “because I said so” onto the end of a sentence.
In Real Life
からです directly answers a どうして (why) question, naming the reason as the entire predicate of the sentence, a clean, complete way to answer “why” on its own.

Vocabulary

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