This is the actor. I really hate his acting.
This is the actor whose acting I really hate.
Monica worked for millionaire. The millionaire had weird hobbies
Monica worked for millionaire who had weird hobbies
We broke the porsche. The porsche belonged to my father.
We broke the porsche that/which belonged to my father.
They live in a city. The city is in the USA.
They live in a city that/which is in the USA.
We employed the lawyer. Julie recommended the lawyer.
We employed the lawyer that/who Julie recommended.
I sent an email to Janice. I used to date her
He sent an email to Janice, whom he used to date with.
Ross is a paleontologist . He can date back the fossils.
Ross is a paleontologist,who can date back fossils.
Gunter liked the waitress. The waitress was very friendly.
Gunter liked the waitress that/who was very friendly.
We ate the fruit. I bought the fruit.
We ate the fruit that/which I bought.
He came with a woman. I know the woman from work.
He came with a woman that/who I know from work.
Ross kissed Chandler's mum. He met her at the restaurant.
Ross kissed Chandler's mum, whom he met at the restaurant
Rachel loves books. The books have happy endings.
Rache loves books that/which have happy endings.