from the fact that ...
Verb or い-Adjective (Informal) +
Used with verbs and い-adjectives in their informal forms to express a reason, cause, or trigger, translating to 'from the fact that' or 'because'.
Verb (Informal) +
Attach
よく本を読む
From the fact that books are read often, knowledge is abundant.
財布を落とした
Because of dropping a wallet, went to the police box.
い-Adjective (Informal) +
Attach
値段が高い
Due to the fact that the price is high, it is not selling well.
寒かった
Because it was cold, no one went outside.
This structure is commonly used to explain how a situation logically arose, how a place got its name, or to deduce a conclusion based on a specific fact. It is slightly formal and mostly used in written or polite spoken Japanese.
な-Adjective + な / である / だった +
Used with な-adjectives to express a reason or cause. The adjective stem must be followed by な, である, or the past tense だった before adding
な-Adjective + な / である +
Use either な or the more formal である after the な-adjective stem to indicate a present state as a cause.
駅が便利な
Because the station is convenient, the rent is high.
静かである
Due to the fact that it is quiet, one can sleep well.
な-Adjective + だった +
Use だった after the な-adjective stem to indicate that a past state is the reason for a situation.
道が複雑だった
Because the road was complicated, got lost.
Using である sounds more academic or objective than using な. Both are grammatically correct and widely used in written contexts.
Noun + である / だった / であった +
Used with nouns to indicate a cause or trigger. Nouns cannot connect directly to
Noun + である +
Attach である to a noun to form the present tense cause. This is highly preferred over だ in this grammatical structure.
祝日である
From the fact that it is a public holiday, the shops are closed.
Noun + だった / であった +
Attach だった or the slightly more formal であった to a noun to indicate a past state as a cause.
子供だった
Because of being a child, it was forgiven.
雨であった
Due to the fact that it was rain, the match was canceled.
A noun followed directly by だ (e.g., 学生だ