Questions & Answers about Мне пора идти спать, потому что я устал.
Because мне пора… uses the dative case to express “it’s time for me to…”. Russian often frames states/necessity as something that applies to a person (dative) rather than “I + verb.”
- Мне пора идти спать = “It’s time for me to go to sleep.” Compare:
- Мне холодно = “I’m cold” (literally “to me [it is] cold”)
- Мне нужно идти = “I need to go”
Пора is a predicative word (a “category of state” word) meaning “it’s time.” It behaves like a predicate and typically pairs with an infinitive:
- Пора идти = “It’s time to go.” It doesn’t conjugate like a normal verb in this meaning.
Yes. Пора идти спать is natural and means “It’s time to go to bed / time to sleep.” Adding мне makes it explicitly about you (“for me”), which can sound slightly more personal or contrastive in context.