THeory
Must and have to are both used to talk about obligations
True or False?
True
has / homework / do / to / he
He has to do homework
Tomorrow is Sunday! So I______ go to school!
a. should't
b. don't have to
c. mustn't
Tomorrow is Sunday! So I don't have to go to school!
When I was a kid, I slept at 8:00 pm
Retell the sentence by using modals.
had to/must/should
When I was a Child, I had to sleep at 8:00 pm
Fill in the blanks
If you want to work in the USA you ___________ speak good English.
Have to
Which is used for
-personal obligations ?
Must or have to ?
must
You must study to get my degree
doesn’t / cook / she / have / to / today
She doesn't have to cook today
If you see Pauline, you _____be polite to her!
a. should
b. must
c. have to
If you see Pauline, you should be polite to her!
I think it's a bad idea to lie to people.
Retell the sentence by using modals.
have to/must/should
You shouldn't lie to people.
You are ill. You ____________ go to school today.
Should not
______is used to show that a person is forced to do something, usually by an external obligation
must/have to/ should
Have to
be / must / quiet / we / library / the / in
We must be quiet in the library
You ____ watch so much television.
a. should't
b. don't have to
c. mustn't
You shouldn't watch so much television.
You don't need to pay in cash.
Retell the sentence by using modals.
have to/must/should
You don't have to pay in cash.
Tomorrow is Monday! So I ____________ go to school!
have to
What is used when saying something is not necessary to do ?
Don't have to
yesterday / they / sleep / had / late / to
Yesterday, they had to sleep late.
Yesterday I ________ finish my geography project.
a. must
b. mustn't
c. had to
Yesterday I had to finish my geography project.
Have to can be used in all tenses.
It's forbidden to enter the computer lab.
Retell the sentence by using modals.
have to/must/should
You mustn't enter the computer lab.
Last year, I ___ wear a uniform at school.
didn't have
This modal verb is used to give advice
SHOULD
do/ wear / students / have / to / uniform / a /?
Do students have to wear a uniform?
Angela, you _____ leave your clothes all over the floor like this.
a. mustn't
b. must
c. have to
Angela, you mustn't leave your clothes all over the floor like this.
It's a good idea to do exercise
Retell the sentence by using modals.
have to/must/should
You should do exercise
In the past, women _____ stay at home.
had to
We use DOESN'T HAVE TO with...
He, she, it
Children/ not / play / class / must / in
Children must not play in class
You are very stressed, You _______ take some vacations
a)have to
b) shoud
c) shoudn't
It's mandatory to do the homework (she)
She has to do the homework
had to