JLPT N2
せいか
perhaps because ~
Structure / Usage
Verb / い-Adj / な-Adj + な + せいか; Noun + の + せいか
Example Sentences
疲れているせいか、集中できない。
Perhaps because I'm tired, I can't concentrate.
天気がいいせいか、公園は人でいっぱいだ。
Perhaps because the weather is nice, the park is full of people.