PRESENT PERFECT IN AFFIRMATIVE FORM
The present perfect, in its affirmative form, has this structure: Subject + have/has + past participle + ...
Have/has: the third person of the singular changes from have to has
SUBJECT HAVE/HAS PAST PARTICIPLE
I/You have worked
He/She/It has worked
We/You/They have worked
I missed the train.
He played soccer.
She lost her keys.
They gone to Spain.
We lived here for five years.
I known Chris for two years.
He eaten sushi.
She drunk too much coffee.
They bought an expensive car.
We both read that book.