► 副詞
何時しか [(1)いつしか] [liter] meaning: when rank: 4
☆ 季節は何時しか変わっていた ⇨ The season has changed while I wasn’t aware. I don’t know when
いつ何時 [いつなんどき] [liter] meaning: when rank: 4
☆ 天災はいつ何時起こるか分からない ⇨ You never know when a natural disaster hits
► 接続助詞
と [と] [liter] meaning: when rank: 1
☆ こう安いと思わず買いたくなる ⇨ When it is this inexpensive, it is hard to resist buying it
☆ このボタンを押すと蓋が開く ⇨ When you push this button the lid opens
☆ これは英語だとどう言うの? ⇨ How do you say this when (expressed) in English?
☆ 摂氏25度は華氏に換算すると77度になる ⇨ 25 degrees in Celsius amounts to 77 degrees when converted to Fahrenheit
ば [ば] meaning: when rank: 1
☆ 今思えば止めておくべきだった ⇨ On looking back I shouldn’t have done it
☆ 明日になれば彼女はまた気が変わる ⇨ When tomorrow comes she will change her mind
癖して [(2)くせして] [coll] meaning: when rank: 2
☆ 自分じゃ出来ない癖して文句を言うな ⇨ Don’t complain when you cannot do it on your own (☛ An alternate form of 癖に)
癖に [(2)くせに] [coll] meaning: when rank: 2
☆ よく知りもしない癖に偉そうなことを言うな ⇨ Don’t be a smart-ass when you don’t really know (☛ Accuse someone of not being worthy)
☆ 昔は女性がスポーツをすると「女の癖に」と罵られた ⇨ In the past when a woman plays sports, she was jeered “you’re just a woman” (☛ Accuse someone of not being worthy)
☆ 自分がヘマをした癖に文句を言うな ⇨ Don’t complain when you yourself made a stupid mistake (☛ Accuse someone of not holding his end of the bargain)
所 [ところ] [liter] meaning: when rank: 2
☆ インターネットで調べたところ、私は幾つかの情報を得た ⇨ When I did some research on internet I got some information (☛ Often written as 処 as well)
☆ ボタンを押したところ爆発した ⇨ When I pressed the button, it exploded (☛ Often written as 処 as well)
☆ 実験をしてみたところ、予想とは全く違う結果が出た ⇨ When we did a test, we got totally unexpected results (☛ Often written as 処 as well)
► 動詞
当たる [あたる] [liter] meaning: when rank: 3
☆ この製品の開発に当たって特に意識した事 ⇨ The things that we were particularly mindful when developing this product
☆ 使用に当たっては十分注意のこと ⇨ Be very careful when you use it
際する [さいする] [に際し] [liter] meaning: when rank: 3
☆ 作戦開始に際し、再度確認する ⇨ We make sure once again, at this time when we commence the operation
☆ 御来場に際してはマスクの着用を御願い致します ⇨ When visiting our venue, please wear a mask
► 助動詞
た [た] [たら] meaning: when rank: 1
☆ 何度も練習したら出来るようになった ⇨ I had practiced many times and I learned how to do it (☛ 仮定形. When I had done something, then …)
☆ 薬を飲んだらずっと気分が良くなった ⇨ I’ve taken the medicine and now I feel a lot better (☛ 仮定形. When I had done something, then …)
☆ 何か分かったら連絡します ⇨ When I will have found out something, when I find out something, I will let you know (☛ 仮定形. When you will have done something, then …)
☆ 終わったら帰ってもいいですよ ⇨ When you will have finished, you are done, you can leave (☛ 仮定形. When you will have done something, then …)
► 成句
何時の間にか [(4)いつのまにか] meaning: when rank: 2
☆ いつのまにか寝てしまっていた ⇨ I fell asleep and I don’t remember when. I fell asleep without realizing
☆ いつのまにか時間が過ぎていた ⇨ Time had passed without me realizing it
► 名詞
何時 [(1)いつ] meaning: when rank: 1
☆ 何時の事かはっきり憶えていない ⇨ I don’t remember exactly when
☆ 何時まで文句を言い続けるつもりだ? ⇨ Until when you keep complaining? When are you going to stop complaining?
☆ 何時まで経っても何も変わらない ⇨ Nothing changes no matter how much time passes
☆ 店は何時閉まりますか? ⇨ When, at what time, will the store close?
時 [(1)とき] meaning: when rank: 1
☆ 何か有った時は知らせて下さい ⇨ Let me know when something happens
☆ 困った時はいつもお父さんに相談する ⇨ When I don’t know what to do, I always ask my dad for advice
しな [しな] meaning: when rank: 3
☆ 帰りしなにコンビニに寄った ⇨ I stopped by at a convenience store on my way home
☆ 朝起きしなに首に痛みを感じた ⇨ Just when I woke up I felt pain in the neck
矢先 [やさき] meaning: when rank: 3
☆ 転職をしようとしていた矢先にコロナ禍が起こった ⇨ Just when I was about to change my job, COVID pandemic happened
暁 [あかつき] [liter] meaning: when rank: 4
☆ 念願成就の暁には盛大な祝宴を挙げるつもりです ⇨ I will have a big party when all my wishes comes true
► 接尾辞
時 [じ] [liter] meaning: when rank: 2
☆ エンジンの始動時に異音がする ⇨ There is abnormal noise when the engine starts
☆ 施設利用時の注意事項 ⇨ The do’s and don’ts while using this facility
☆ 緊急時の連絡先 ⇨ The contacts for the time of emergency
☆ 非常時の備え ⇨ Preparation for the time of emergency