For example :
"I know" : Ya znayu
"We know" : My Znayem
"He/She Know" : on znayet/ona znayet
"You know" : Ty Znayesh
"They know" : Oni znayut
etc
Knowing that 'znat' means 'To know' might not be enough to place a word in a sentence
Some suggest that it might be better to memorize sentences or phrases instead