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MUSTMUST MUSTN’TMUSTN’T
She MUST be in bed because she has the flu.
Peter MUSTN’T sleep during the class.
ObligationStrong advice
Jack MUST brush his teeth before going to bed.
You MUSTN’T smoke.
Prohibition
Sam ____________ watch TV for so many hours.
MUSTMUST MUSTN’TMUSTN’T
MUSTMUST MUSTN’TMUSTN’T
Andrew____________ wash his hands before meals.
Tim ………………….. be careful with his school material.
MUSTMUST MUSTN’TMUSTN’T
1.Kate is ill, so she .................. see the doctor.
2.You ................... throw litter on the floor.
3.You ................. make noise in the library.
4.It is raining so we .................. take our umbrellas.
5.This is a secret. You ................... tell anybody.
6. We ...................... hurry or we will be late for the English class.
7.You .....................eat fruit and vegetables. It is good for your health.
8.The baby is sleeping. You ...................shout.
9.You ........................ study for the test.
10.You ....................... walk on the grass.
Fill the blanks with must or mustn’t.
A: MUST
A: MUSTB: MUSTN’T
B: MUSTN’T
A
B
B
A
B
A
A
B
A
B
HAVE TOHAVE TODON’T /DOESN’T
HAVE TODON’T /DOESN’T
HAVE TO
Students HAVE TO wear uniform in Peru. It’s January. We DON’T HAVE TO
go to school.
It’s January. We NEEDN’T go to school.
ObligationUnnecessity
Match These
1. A doctor
2. A teacher
3. A taxi driver
4. A baker
5. A father
a.has to earn money for his family.
b.has to be very careful on the roads.
c.has to help his patients.
d.has to make bread for his customers.
e.has to come to classes on time.
Match These
1. Alicia’s father is extremely rich so …
2. Lucy feels terribly tired so …
3. Berkan always watches TV at nights so …
4. Mehmet doesn’t like his deskmate so … a.he has to spend time for his
lessons.
b.he has to change his place.
c.she doesn’t have to work anywhere.
d.I think she has to go home and rest.
c
d
a
b
1. John has got an easy job. He ___________ work very hard.
2. Why is Susan waiting? She _____________ wait.
3. Keep these papers in a safe place. You _______ lose them. 4. We _______ forget to turn off the lights before we leave.
5. We have a lot of time. We ____________ hurry.
6. It’s Lisa’s birthday next week. I ______ forget to buy her a present.
don’t have to
mustn’t
mustn’t
mustn’tmustn’t
doesn’t have to
doesn’t have to
MUSTN’T / DON’T – DOESN’T HAVE TO
