Usages of sei de
春 は 花粉 の せい で、 鼻水 が 止まらない 日 が あります。haru ha kahun no sei de, hanamizu ga tomaranai hi ga arimasu.
In spring, because of pollen, there are days when my runny nose won’t stop.
渋滞 の せい で、 約束 に 遅れました。zyuutai no sei de, yakusoku ni okuremasita.
I was late for my appointment because of the traffic jam.
花粉 の せい で、 今日 は 目 が かゆい です。kahun no sei de, kyou ha me ga kayui desu.
Because of the pollen, my eyes are itchy today.
渋滞 の せいで、 バス が なかなか 来ません。zyuutai no seide, basu ga nakanaka kimasen.
Because of the traffic jam, the bus is not coming easily.
寝坊した せいで、 始発 に 乗り遅れました。nebousita seide, sihatu ni noriokuremasita.
Because I overslept, I missed the first train.
雨 の せいで、 洗濯物 が まだ 乾いて いません。ame no seide, sentakumono ga mada kawaite imasen.
Because of the rain, the laundry still has not dried.
寝不足 の せい で 朝 から 頭痛 が して、 食欲 も あまり なかった。nebusoku no sei de asa kara zutuu ga site, syokuyoku mo amari nakatta.
Because of lack of sleep, I had a headache since morning and did not have much appetite either.
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Japanese verbs conjugate based on tense, politeness, and mood. For example, the polite present form adds ‑ます to the verb stem, while the past tense uses ‑ました. Unlike English, Japanese verbs don't change based on the subject — the same form works for "I", "you", and "they".
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