Who is this?
Kto to jest?
My mother is at home. (Subject of the sentence)
Moja mama jest w domu.
A young boy is reading a book (subject of sentence)
Młody chłopiec czyta książkę.
There is a book on the table. (after “jest” ; affirmative existence)
Na stole jest książka.
This is my mother (after “jest”)
To jest moja mama.
This is not a computer. (after “jest”)
To nie jest komputer.
She is tall (predicate adjective)
Ona jest wysoka.
The table is not big. (predicate adjective)
Stoł nie jest duży.
The cook is preparing soup.
Kucharz gotuje zupę.
My dad is a doctor.
Mój tata to lekarz.