Hello friends. i have a question , well, it maybe simple for you but :P i really don't understand the diffrent.
For example :
бегать - побежать (to run) быть - побыть (to be)
видеть - увидеть (to see) говорить - сказать (to speak)
давать - дать (to give) делать - сделать (to do)
...and it goes on.
one of them is for the past tense ? what is it?
Thanks o lot.