Let’s look at these two sentences:
Amit mera dost hai. Vo Mumbai me rah-ta hai
= Amit is my friend. He lives in Mumbai
Let’s see how to combine these two sentences now…
Amit is my friend. He lives in Mumbai
In English, replace He to who -> Amit is my friend who lives in Mumbai
In Hindi, replace vo -> jo
Amit mera dost hai. Vo Mumbai me rah-ta hai ->
Amit mera dost hai jo Mumbai me rah-ta hai
Radha is my friend. She is a good singer =
Radha is my friend who is a good singer =
jo = which, that (for things)
This is Delhi. It is India’s capital ->
This is Delhi which is India’s capital.
ye Dilli hai. vo Bharat ki rajdhani hai ->
ye Dilli hai jo Bharat ki rajdhani hai
Amit goes to London. It is England’s capital. =
Amit goes to London which is England’s capital. =
kaunsi kitaab? = Which book?
(Vo kitab) jo table pe hai = That book which is on the table.
Which boy? =
That boy who is watching a movie =