Translation guide
A guide to expressing 'either ... or ...' in Japanese, covering inclusive and exclusive choices, as well as common patterns for questions and statements.
To present two or more options where any of them are acceptable, similar to 'either A or B (or both)'.
The most common way to list alternatives. It can be used in both statements and questions. The particle か means 'or'. This pattern is neutral and can imply that one or both options are possible.
コーヒーか紅茶はいかがですか。
Would you like either coffee or tea?
Let's meet either on Saturday or Sunday.
Adding a second か after the last option can add emphasis or clarity, especially in formal contexts. It makes the choice more explicit.
参加するかしないか、早く決めてください。
Please decide quickly whether you will participate or not.
Used to present a clear choice between two alternatives, often in questions. それとも emphasizes the contrast between A and B.
電車で行きますか、それともバスで行きますか。
Will you go by train, or by bus?
To express that only one of the options is possible, similar to 'either A or B (but not both)'.
This pattern explicitly means 'either A or B (one of the two)'. It is used when the choice is exclusive. どちらか means 'one of the two'.
日本語か英語のどちらかで話してください。
Please speak in either Japanese or English.
コーヒーか紅茶のどちらかを選べます。
You can choose either coffee or tea.
Similar to どちらか, but more formal. いずれか means 'any one' or 'either'. Often used in written or business contexts.
必要書類はパスポートか運転免許証のいずれかです。
The required document is either a passport or a driver's license.
A more emphatic version of どちらか, often used when the choice is strictly limited to two options.
参加するかしないかどちらかです。
It's either participate or not.
To express that none of the options apply, equivalent to 'neither A nor B'.
The standard way to say 'neither A nor B'. The particle も replaces は/が and is used with a negative verb/adjective. This pattern is essential for learners.
彼は肉も魚も食べません。
He eats neither meat nor fish.
この部屋は広くもないし、明るくもない。
This room is neither spacious nor bright.
Used with nouns and na-adjectives to mean 'neither A nor B'. でも is the combination of で (copula) and も.
それは猫でも犬でもない。
That is neither a cat nor a dog.
To ask someone to choose between two options.
The standard way to ask 'Which is more ~, A or B?'. どちら means 'which' (of two). The と particle lists the options.
コーヒーと紅茶とどちらが好きですか。
Which do you like better, coffee or tea?
A simple way to embed a choice in a question. Often used with verbs like 決める (decide) or 分かる (know).
行くか行かないか決めてください。
Please decide whether you will go or not.
English 'either' is often not directly translated. In Japanese, the choice is usually expressed through particles like か, も, or どちら. Do not try to use a word like どちらも for 'either' in positive sentences; どちらも means 'both' in positive contexts.
どちらもいいです。
Both are fine. (Not 'either is fine'.)
When expressing 'neither A nor B', use も, not か. Using か in negative sentences can create a different meaning (e.g., 'I don't know if it's A or B').
肉か魚か分からない。
I don't know if it's meat or fish.
肉も魚も食べない。
I eat neither meat nor fish.