Common mistake: “A carpenter is a person which works with wood.” — Correct: “A carpenter is a person who works with wood.”
We use 'who' to define a person by what they do: 'a person who + verb' (a person who works, who teaches, who helps).
a person who + action
Profession
Definition
A carpenter
is a person who works with wood
A teacher
is a person who teaches students
A doctor
is a person who helps sick people
A pilot
is a person who flies planes
Actor — acts in films
Baker — makes bread
Carpenter — works with wood
Doctor — helps sick people
Electrician — fixes electric things
Farmer — grows food
Gardener — takes care of plants
Hairdresser — cuts hair
Interpreter — translates languages
Journalist — writes the news
Kindergarten teacher — teaches young children
Lawyer — defends people in court
Mechanic — fixes cars
Nurse — takes care of patients
Optician — tests your eyes
Pilot — flies planes
Queen — rules a country
Receptionist — welcomes guests
Singer — sings songs
Teacher — teaches students
Usher — shows people their seats
Vet — takes care of animals
Waiter — serves food in a restaurant
X-ray technician — takes x-rays
Yoga teacher — teaches yoga
Zookeeper — looks after zoo animals
A carpenter is a person who works with wood.
A vet is a person who takes care of animals.
A pilot is not a person who cooks food.
A lawyer isn't a person who cuts hair.
What do you call a person who flies planes?
Is a nurse a person who helps sick people?
Is a baker a person who makes bread? Yes, he is.
Is a mechanic a person who teaches? No, he isn't.
Practice
A doctor is a person ___ helps sick people. (which, who, where)
We use 'who' for people and 'which/that' for things.
A carpenter is a person who ___ with wood.
A baker is a person who ___ bread.
A pilot is a person who ___ planes.
A teacher is a person who ___ students.
A mechanic is a person who ___ cars.
Find the mistake: A nurse is a person which takes care of patients.
A gardener. He takes care of plants. — Join them into a definition with 'who'.
What do you call a person who cuts hair?
Listening
Kenji: Let's play a game! I describe a job, and you guess.
Ben: Okay, go!
Kenji: It's a person who works with wood.
Ben: That's easy — a carpenter!
Kenji: Yes! Now, a person who takes care of animals?
Ben: A vet! I love this game.
Reading
Kenji loves guessing games. 'A doctor is a person who helps sick people,' he says. 'A teacher is a person who teaches students, and a pilot is a person who flies planes.' Ben laughs. 'And you? What do you want to be?' Kenji thinks. 'I want to be an interpreter — a person who translates languages. That way, I can talk to everyone in the world!'
A pilot is a person who flies planes.
Kenji wants to be a doctor.
An interpreter is a person who translates languages.