Translation guide
The English word "was" is the past tense of "be". Japanese does not have a direct equivalent that works in all cases. This guide explains how to express past states, existence, and copula functions naturally in Japanese.
Expressing that something was a certain way (e.g., "It was fun", "She was a teacher").
Polite past tense of the copula. Use for formal situations or when speaking politely.
昨日は楽しかったです。
Yesterday was fun.
彼女は先生でした。
She was a teacher.
Plain past tense of the copula. Used in casual speech or informal writing.
Very formal/humble past copula. Rarely used outside keigo-heavy business or ceremonial contexts.
こちらは会議室でございました。
This was the conference room.
Saying that something existed or was present in the past (e.g., "There was a cat", "I was at home").
Describing an ongoing action or state in the past (e.g., "I was eating", "It was raining").
Polite past progressive. Attach to te-form of verb.
私は食べていました。
I was eating.
雨が降っていました。
It was raining.
Indicating that something was done to the subject (e.g., "It was built", "I was told").
Polite past passive. Formed with passive stem + ました.
この建物は去年建てられました。
This building was built last year.
私は先生に褒められました。
I was praised by the teacher.
In Japanese, the equivalent of "was" is often omitted when the past context is already established or obvious.
In casual conversation, especially when the topic is understood, the copula or existence verb can be dropped. This is very common.
昨日、楽しかった？ — うん、楽しかった。
Was it fun yesterday? — Yeah, it was fun.
猫は？ — いたよ。
What about the cat? — It was there.
English requires a verb in every sentence, but Japanese often omits the copula or existence verb when it's clear from context. Overusing でした/だった can sound unnatural.
A: 誰がやったの？ B: 僕。
A: Who did it? B: It was me.
でした is the polite form, used with strangers, superiors, and in formal settings. だった is the plain form, used with friends, family, and in informal writing. Choose based on your relationship with the listener.
When "was" is part of an explanation or reason, consider using のだ (plain) or んです (polite) in past tense: だったのだ / だったんです.
Polite past of ある (aru), used for inanimate things and abstract concepts.
机の上に本がありました。
There was a book on the desk.
問題がありました。
There was a problem.
Plain past progressive. Casual.
食べていた。
I was eating.
Plain past passive. Casual.
建てられた。
It was built.
The reason I was late was that the train was delayed.
The reason I was late was that the train was delayed.