僕(ぼく) bokuは wa見(み)た() mitaとたんに totanniメアリー meariiだ daと toわかった wakatta。 I recognized Mary the moment I saw her. Literal I [topic-は] saw-[instant-とたんに] Mary [quotative-だと] understood. The pattern ~たとたんに ('the instant X happened') marks immediate recognition. The loanword rendering of 'Mary' as メアリー in katakana is standard for foreign names in Japanese. observationquotative と~たとたんに (the instant)
僕(ぼく) bokuは wa見(み)た() mitaとたんに totanniメアリー meariiだ daと toわかった wakatta。 I recognized Mary the moment I saw her. Literal I [topic-は] saw-[instant-とたんに] Mary [quotative-だと] understood. The pattern ~たとたんに ('the instant X happened') marks immediate recognition. The loanword rendering of 'Mary' as メアリー in katakana is standard for foreign names in Japanese. observationquotative と~たとたんに (the instant)