～次第 (〜shidai)
Explanation
Expresses 'as soon as' (when used with Verb-ますstem) or 'depending on' (when used with a noun).
Formation
Verb-ますstem + 次第, Noun + 次第
Detailed Explanation
The grammar pattern ～次第 can mean 'as soon as' when used with a verb in its ます-stem, and 'depending on' when used with a noun. For instance, 仕事が終わり次第 (as soon as work finishes) or 天気次第 (depending on the weather).
Examples
仕事が終わり次第、帰ります。
Shigoto ga owari shidai, kaerimasu.
I will go home as soon as I finish work.
お客様のご意見次第で、サービスを改善します。
Okyakusama no goiken shidai de, saabisu wo kaizen shimasu.
We will improve our services depending on customer feedback.
彼の返事次第で、パーティーに行くかどうか決めます。
Kare no henji shidai de, paatii ni iku ka dou ka kimemasu.
I will decide whether or not to go to the party depending on his answer.
天気次第で、ピクニックを予定しています。
Tenki shidai de, pikunikku wo yotei shite imasu.
We are planning a picnic depending on the weather.
Grammar content sourced from hanabira.org.