1. Relative clause
-I recently went back to the town. I was born in this town.
-> I recently went back to the town where i was born.
-She's the journalist. Her article was on the front page of The Times.
-> She is the yournalist, whose article was on the front page of The Times.
-This is the lion. It's been ill recently.
-> This is the lion, which has been ill recently.
2. Passive voice
-We expect students not to talk during the examination.
Students aren't expected not to talk during the examination.
-No one has ever known him to be dishonest.
He hasn't ever been known to be dishonest by anyone.
-Don't open your book!
Your book shouldn't be opened!