How many tenses are there in japanese?
..and what are the tenses?

Question

Answer

There are 2. Non-past and past.  The complicated part is that there are many ways to form them; each having it's own level of politeness and other things.

Answer

Hai lula ^^

i know the present

— wa — desu.

ex: watashi wa rura desu
و تنعني : أنا لولا

and the past :
— wa — deshita.
ex: watashi wa lula deshita
و تعني : أنا كنتُ لولا

و آسف انني لا اجيد كثيرا ،، اتمنى لو لجيبك تماما