My brother, who is an engineer, is coming to visit.
Non-defining
Defining: I like movies. The movies include mystery.
I like movies that include mystery.
The Eiffel Tower, _______ was built in 1889, is a symbol of Paris.
which
Defining: Movies are not successful. The movies' characters are not believable.
Movies whose characters are not believable are not successful.
Non Defining: I was at Powell's Books. I go there every Saturday afternoon.
I was at Powell's Books, where I go every Saturday afternoon.
I need the book _______ is on the top shelf.
that
Non defining: I bought this book at City Lights Bookstore. I finished the book in two days.
I bought this book, which I finished in two days, at City Lights.
Defining: The person lives in my town. He directed this movie.
The person who directed the movie lives in my town.
The book that I recommended is on the top shelf.
Defining
The car that I bought last month is already in the shop.
Defining
Our new house, which has a big garden, is perfect for us.
Non-defining
The woman who lives next door is a teacher.
Defining
Non defining: I bought this book at City Lights Bookstore. I finished the book in two days.
I bought this book, which I finished in two days, at City Lights.
The man _______ is talking to my sister is a doctor.
who
My sister, _______ is a lawyer, just got promoted.
who
The mountain, which is the tallest in the range, is visible from here.
Non-defining
The girl _______ won the first prize is my best friend.
who
My new phone, _______ I bought yesterday, is already broken.
which
The students who passed the exam are excited.
Defining