Which correctly uses or omits commas?
I don't mind if people borrow my books. I do nevertheless expect them to ask first.
I don't mind if people borrow my books. I do, nevertheless, expect them to ask first.

Question

Which correctly uses or omits commas?
I don't mind if people borrow my books. I do nevertheless expect them to ask first.
I don't mind if people borrow my books. I do, nevertheless, expect them to ask first.

anonymous · Answer

This sentence uses commas correctly: 
I don't mind if people borrow my books. I do, nevertheless, expect them to ask first.

anonymous · Answer

"nevertheless" is an interruption in the sentence; therefore, it is surrounded by commas.

anonymous · Answer

Thanks for the medal.