English as a Second Language/between


Hi there,
I know that you this is correct.

You must choose between a and b.

Why is using or instead of and wrong when you use between,
example is:
You must choose between a or b.

Thank you.


Hi Bernard,

indeed the correct form is "choose between X and Y"

By using between you've already indicated a choice so you can't be using 'or' instead of 'and' as it would be redundant. In other words, the use of 'between' demands the use of 'and' as the conjunction linking the choices.

Unfortunately I've seen 'or' and 'to' being used instead of 'and' in similar circumstances, but both those forms would be incorrect.

Hope this helps.

Best regards,

Amy Baker

English as a Second Language

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Amy Baker


I can answer question about grammar, spelling, syntax, idioms, reading and/or writing that pertain to English as a Second Language. I am knowledgeable about both TOEFL and IELTS.


I'm a certified ESL teacher with 12 years of experience teaching K-12 and adults.

BSc MEd TESL post grad program for k-12 TESL post grad program for adult ed

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