" There is " & " There are "

There is = There are = است /ast/

a book = كتابي /keta:bi/ (We could say يك كتاب /yek keta:b/ for 'a book', but here use NOUN+/i/sound is better. Examples:a tree درختي /kerakhti/; a table ميزي /mi:zi/.
on = روي /ru:ye/
the table = ميز /mi:z/

There is a book on the table = كتابي روي ميز است
There are two books on the table = دو متاب روي ميز است
There are ten books on the table = ده كتاب روي ميز است
There are 25 books on the table = تيست و پنخ كتاب روي ميز است

Notes: If the subject is human in this structure, it has two way for "there are".
There are = است /ast/ or هستند /hastand/
Examples:
There is one boy in the class = پسري در كلاس است /pesari dar kela:s ast/
There are two boys in the class = دو پسر در كلاس است/do pesar dar kela:s ast/
Or دو پسر در كلاس هستند /do pesar dar kela:s hastand/

see 92-93