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Because of A, B
A is marked as the blame or cause of something happening.
Join for free or Login to study this and other grammar in the lesson Conjunctions I!
好
10点
交 通 渋 滞 の せい で コンサート に 間 に 合 い ま せ ん で し た 。 
Because of the traffic jam, I didn't make it to the concert on time.
好
10点
彼 女 が 私 を 騙した せい で 、 別 れ な け れ ば ならなかった 。 
We had to break up, because she deceived me.
好
13点
今日 １０ 時 間 仕 事 を した せい で 家 に 帰 っ て から すぐ に 寝 ま し た 。 
I went to sleep as soon as I got home because I worked for ten hours today.
好
15点
天 気 の せい で 肉 祭 り は 中 止 に なりました 。 
Due to the weather, the meat festival was suspended.

Getting the sentences
These user sentences have been verified by a native speaker.

好
6点
アラームが鳴らなかったせいで、遅刻した。
Because my alarm didn't go off, I was late.
9 years ago (0) (0)
avatar emmy
好
1点
昨日、ジムに行ったせいで、今は筋肉痛だ。
My muscles are sore because I went to the gym yesterday
9 years ago (0) (0)
avatar emmy
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Construction
(Elements in parentheses are optional.)
Aい-adjective
 
AVerb: Casual
 
Aな-adjective な/だった
 
ANoun の
 
 
せいか/で/にBNegative\Positive result*
*See the Usage information below to determine when a positive result can follow this construction.
Usage of で, か, and に
When か is used after せい, the result B can be desirable or undesirable.

よく 勉 強 し た せい か 、 いい 成 績 を 取 れ ま し た 。 (correct)

I got a good grade because I studied a lot.

風邪 を 引 い た せい か 、 学 校 を 休 み ま し た 。 (correct)

I didn't go to school because I caught a cold.
When で comes after せい, the result B is always undesirable, and is outside of the control of the speaker.

雨 の せい で 外 で 遊 べ ま せ ん で し た 。 (correct)

I couldn't play outside because of the rain.
に is used if せい comes before a verb such as する.

これ は あなた の せい に する (correct)

I'll put the blame on you.
Related Expressions
おかげで
Where this grammar is found
Nihongo So-Matome N3 (日本語総まとめ）: 第４週　2日目
新完全マスター文法 N3: 第１部　５課
JLPT N3 / Intermediate: Conjunctions ①


User notes
好
0点

Mẫu câu này dùng khi diễn tả ý : “Tại một lý do nào đó mà dẫn đến một kết quả xấu”, “Tại một điều gì đó không tốt dẫn đến một kết quả xấu”. Trong trường hợp sử dụng để nói về hành động của người khác thì mẫu này mang cảm xúc đổ thừa, trách móc.

私が失敗したのは、彼のせいだ。
Tôi thất bại là tại thằng ấy.
6 years ago
HoangDX - Level 1

Discussion about this grammar
avatar
mireille
Years Studied: 3
Studying: JLPT N3 & JLPT 2級
Level: 1, 好 : 94
Plain form I-adjective + せい
Plain form Na-adjective + せい

are also possible according to Unicom.

Other than that, the grammar books says that せいか can both be used for a negative and positive result.
よく寝たせいか、今朝は頭がすっきりしている。
好
0点
12 years ago
avatar
マイコー
Site admin
 Level: 62, 好 : 5,642
Thanks, spiced up the page. I just finished writing a tool where I can very easily modify the entire page (not just the meaning and usage patterns), including adding example sentences in the explanation, so I'll be able to enrich the pages much more easily.
好
0点
12 years ago
sid007
Level: 1, 好 : 0
For your example, よく勉強したせいか、言いせいせきをとれました. the usage of the kanji 言い here seems wrong, you really wanted 良い (i.e. a "good" grade), but would you even bother with kanji in this situation?
好
0点
12 years ago
avatar
マイコー
Site admin
 Level: 62, 好 : 5,642
Thanks - you're right - there was a small problem when the sentence was tied to the vocabulary. I'll fix it right now. Thanks!
好
0点
12 years ago
cyrus
Years Studied: 3
Studying: JLPT N１
Level: 1, 好 : 1
「い-adjective A + な/だった + せい + か/で/に + Negative resultB」
Shouldn't this be for な-adjectives?
好
0点
11 years ago
avatar
マイコー
Site admin
 Level: 62, 好 : 5,642
Fixed, thanks!
好
0点
11 years ago
cyrus
Years Studied: 3
Studying: JLPT N１
Level: 1, 好 : 1
「に is used if せい comes before a noun such as する. 」
する is a verb

If せいか can also have desirable outcomes, then "Negative result" doesn't apply in the whole for B.
好
0点
11 years ago
avatar
マイコー
Site admin
 Level: 62, 好 : 5,642
Thanks -

Before I make the change to the usage patterns, which do you think would be more clear:

1. Splitting out the か to a new set of usages (so there'd be 8 listed instead of 4)
2. Keep the 4, but change 'negative' to 'negative/positive' (smaller, but you'd have to read the notes below it in order to know the difference between か and で.
好
0点
11 years ago
cyrus
Years Studied: 3
Studying: JLPT N１
Level: 1, 好 : 1
I guess I would go for splitting it up, since it seems か and に are significantly different in that case. But the せいか is rather new to me, so don't take my words to seriously ^^.
好
0点
11 years ago
avatar
マイコー
Site admin
 Level: 62, 好 : 5,642
Alright - I thought up a bit of a compromise, so I did that (changes have already been put in)
好
0点
11 years ago



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