What it means
それとも means “or” or “or else” and connects alternatives, especially in questions that ask someone to choose between two possibilities. It usually appears between two clauses or choices, with the first alternative stated before it and the second alternative after it. The alternatives can describe actions, states, or answers.
Usage note
それとも is especially common in questions and choice prompts. For a simple alternative in a statement, または or あるいは may be more natural.
Example sentences
週末は図書館で勉強するのか、それとも家で勉強するのか、決めてください。
Please decide whether you will study at the library on the weekend or study at home.
昼食は社員食堂で食べますか、それとも近くの店に行きますか。
Will you eat lunch in the company cafeteria, or will you go to a nearby restaurant?
申込書は郵送しますか、それとも