► 副詞
同時に [どうじに] meaning: as soon as rank: 2
☆ 容器を開けると同時に悪臭が鼻をついた ⇨ As soon as I open the container the stench hit my nose
► 接続助詞
なり [なり] [liter] meaning: as soon as rank: 3
☆ 彼はそう言うなり突然立ち上がった ⇨ As soon as he said that he suddenly stood up
► 成句
や否や [(2)やいなや] [liter] meaning: as soon as rank: 3
☆ 彼は警官を見るや否や逃げ出した ⇨ He started running away as soon as he saw the cop (☛ Note that the verb before “や否や” is always infinitive regardless of the tense of the action)
☆ 彼女はデビューするや否や大スターになった ⇨ As soon as she debuted she became a superstar (☛ Note that the verb before “や否や” is always infinitive regardless of the tense of the action)
► 名詞
途端 [とたん] meaning: as soon as rank: 2
☆ 彼女は彼の顔を見た途端泣き出した ⇨ The moment she saw his face she started crying
☆ 私が手にとった途端それはバラバラになった ⇨ The moment I held it my hand it fell to pieces
☆ 電話を切った途端にまた電話が鳴った ⇨ As soon as I hung up the phone it rang again