ли vs разве
li vs razve — whether/question particle vs rhetorical “really?”
Register: neutral
What it really means
Ли forms a neutral yes/no question or an indirect “whether” clause and follows the focused word. Разве challenges an assumption, often expecting “no” or expressing surprise.
Ли is grammatical and unstressed; разве adds the speaker’s attitude.
Examples in natural speech
Знаете ли вы ответ?
Do you know the answer?
Я не знаю, придёт ли он.
I do not know whether he will come.
Можно ли войти?
May I come in?
Разве ты не видел письмо?
Did you really not see the letter?
Разве это трудно?
Is that really difficult?
Common mistakes
Do not use разве for a neutral indirect question. Also place ли after the word being questioned, not automatically at the start.
Memory tip
Ли asks openly; разве questions an expectation.
Frequently asked questions
How do I say “I wonder whether”?
Интересно, ... ли.
Does разве require negation?
No, but it is common with it.
Can ли be used in indirect questions?
Yes.
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