Common mistake: “She have to work on Saturday.” — Correct: “She has to work on Saturday.”
We use 'have to / has to' for obligations that come from outside (rules at work or school); with he/she/it we use 'has to'.
have to / has to
Subject
Form
Example
I / You / We / They
have to
I have to study
He / She / It
has to
She has to work
Negative
don't / doesn't have to
He doesn't have to wait
Question
Do / Does ... have to?
Do you have to go?
be on time — ser puntual
study for an exam — estudiar para un examen
wear a uniform — usar uniforme
finish the report — terminar el informe
attend meetings — asistir a reuniones
do homework — hacer la tarea
follow the rules — seguir las reglas
take notes — tomar apuntes
I have to be on time, and Sofía has to finish the report.
Students have to do their homework every day.
Ben doesn't have to wear a uniform.
We don't have to work on Sundays.
Do you have to study tonight? Does she have to attend the meeting?
Why do we have to follow so many rules?
Do you have to work today? Yes, I do.
Does he have to wear a suit? No, he doesn't.
Practice
She ___ work on Saturday. (have to, has to, haves to)
With he/she/it, we use 'has to', not 'have to'.
I have to ___ for my exam tonight. (estudiar)
I have to be at the office ___ nine o'clock.
During the exam, students have to sit ___ their chairs and stay quiet.
Find the mistake: He have to finish the report.
Sofía finishes the report. — Add obligation with 'has to'.
You have to study. — Turn it into a question (use 'do').
Do you have to work tomorrow? (Answer: Yes, I do. / No, I don't.)
Listening
Kenji: Ben, do you have to work today?
Ben: Yes, I do. I have to finish a report before five.
Kenji: Do you have to wear a suit?
Ben: No, I don't have to. My office is relaxed.
Kenji: Lucky you! I have to study for an exam.
Ben: Then you have to be at the library early!
Reading
Ben and Kenji are both busy. Ben has to work in an office; he has to finish reports and attend meetings, but he doesn't have to wear a uniform. Kenji is a student, so he has to do homework, take notes, and follow the school rules. 'We have to work hard,' says Ben, 'but we don't have to do it alone. That's why we have friends.'