Most perfective verbs look exactly like imperfective ones, just with a prefix. Prefixes might be different, but the most popular one is по-, which usually means that the action is done a little bit, for a short period of time. COMPARE:
- ждать – to wait (as a process): Я жду тебя – I'm waiting for you.
- подождать – to wait for a while, a little bit: Подожди минуту, пожалуйста – Could you wait for a minute, please.
An interesting fact is that Perfective verbs do not exist in the Present tense
, because Perfective indicates the result of an action, and the result is either possible in the past (has already happened) or in the future (will happen).