THeory +1
Should and have to are both used to talk about obligations: things you cannot choose not to do.
True or False?
True
You use 'have to' to give advice or express your opinion.
True or False?
False
You use 'should' to give advice or express your opinion.
Tomorrow is Sunday! So I______ go to school!
a. should't
b. don't have to
c. should
Tomorrow is Sunday! So I don't have to go to school!
All passengers ____ exit at the next stop.
a. don't have
b. have to
c. has to
All passengers have to exit at the next stop.
Fill in the blanks
If you want to work in the USA you ___________ speak good English.
Have to
Which is used for
-obligations in formal, written English:
should or have to ?
Should
Use have to for
-most obligations in spoken English.
True or False ?
True
Example:Do you have to work tomorrow?
If you see Pauline, you _____be polite to her!
a. should
b. doný have to
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/shouldn't/should
You shouldn't lie to people.
You are ill. You ____________ go to school today.
Should not/ shouldn't
______is used to show that a person is obliged to do something, usually by an outside force.
shouldn't/have to/ should
Have to
A:"I have a terrible stomachache."
B:"You ______ go to the doctor's."
a.should't
b.Should
c.don't have to
Should
He's giving an advice.
You ____ watch so much television.
a. should't
b. don't have to
c. mustn't
You mustn't watch so much television.
You don't need to pay in cash.
Retell the sentence by using modals.
have to/don't have to/should
You don't have to pay in cash.
6. Tomorrow is Sunday! So I ____________ go to school!
have to
What is used when saying something is not necessary to do ?
Don't have to
We use _______ to express obligation.
Have to
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/should/shouldn't
You shouldn't enter the computer lab.
If you see Pauline, you ___________ be polite to her!
should
What modal use when you explian something that is a good or possitive idea
_______expresses impersonal obligation. The subject of ____ is obliged or forced to act by a separate, external power (for example, the Law or school rules). It is objective.
Fill in the blank with: Should/ Must/ Have to
Have to
Angela, you _____ leave your clothes all over the floor like this.
a. don't have to
b. must
c. have to
Angela, you don't have to leave your clothes all over the floor like this.
It's a good idea to set the volume on your MP3 player at a low level.
Retell the sentence by using modals.
have to/dont have to /should
You should set the volume on your MP3 player at a low level.
We _______ to brush our teeth three times a day
have to