To read
I often read book in Saturdays.
I’m reading book now.
Yesterday I read book.
To have
Usually I have a shower in the evening.
I’m having a shower now.
I had a shower 2 minutes ago.
To drink
I drink tea every day.
I’m drinking tea now.
I drank tea 2 hour ago.
To do
Sometimes I do my lessons at 21:00 o’clock.
I’m doing my lessons now.
I did my lessons 2 day ago.
To buy
My sister often buy shoes.
My sister is buying shoes now.
My sister bought shoes last week.