23 Must shoud...
MUST, SHOULD ...
MUST X SHOULD X HAVE TO: saiba a diferença e como usar
OS “MODAL VERBS” TRAZEM VERBOS AUXILIARES QUE INDICAM ORDEM, POSSIBILIDADE, VONTADE, ENTRE OUTRAS.
MUST
Must is a modal verb and it has a present form, which can be used to talk about the present or the future. The negative form is must not or mustn’t and the question is must I, must you, etc.
*I must go to the doctor.
You mustn’t call me before 8.
It is used to describe something that the speaker thinks is necessary to do.
Must only has a present form, so for all other verb forms (past, future, perfect forms, infinitive, etc.) we need to use have to.
*You will have to come with me.
We had to drive very fast.
SHOULD
“Should is used to give advice or an opinion about what we think is right or wrong.
*You should go to a therapist.
I think schools shouldn’t offer soft drinks to their students.
*Should is not as strong as must or have to.
HAVE TO
Have to is NOT a modal verb. We need do/does/did to make negatives and questions in present and past.
*Do you have to get up early tomorrow? (NOT Have you to get up early?)
*Did you have to change the sound card?
*We don’t have to stay until the end
*It is used to describe an obligation, a rule,
something that is necessary..
Answer
This is a hospital. You ___________ smoke here.
People __________ walk on the grass.
Drivers ________ stop when the traffic lights are red.
What do you think I __________do?
I think you __________see a doctor.
Why is that man looking around like that? He _________be lost.
I will show you five reasons why you __________stop smoking.
I think you ___________study for the test so that you get a good grade.
I ________ go home at 10pm
You _________take this job. It’s perfect for you!
Do you ______ get up early tomorrow?
You are ill. You _________go to school today.
Tomorrow is Sunday! So I don´t _______ go to school!
Please, tell her that she_______ get good results at school! (should/ has to /must)
We ______obey the laws.
He _______to go to the dentist.