The present

The verb forms are the present, the past and the past participle.

show, showed, shown - pokazywać

The present

I show my biceps every day.
Pokazuje biceps codziennie.

The past

I showed my biceps yesterday.
Wczoraj pokazałem biceps.

The past participle

I have shown my biceps two times today.
Dzisiaj pokazałem biceps 2 razy.