[Grammar] Both are smoking, Both of whom ,or whom.

[saloom2]

Hello everyone,

I would like to know which one sounds natural:


1) I have two sisters, both of whom smoke.
2) I have two sisters, who smokes.

And when we must use both of whom.

 

[Rover_KE]

I would like to know which one sounds natural:


1) I have two sisters, both of whom smoke. ​Correct.
2) I have two sisters, who both smoke.

Rover

 

[saloom2]

What does "I have two sisters, who smokes." mean?

 

[Rover_KE]

It's an ungrammatical sentence.

You could say 'I have two sisters who smoke'.

Rover