Modal verbs

Modal Verbs

of necessityof prohibition and permission

Empezar

Modal verbs of necessity.

Show what something is not optional is a necessity.

We must show our passport at the aiport. I have to pay my phone bill soon. I need to work late tonight. I want to buy a new car.

Modals of Necessity

Must, have to, need to

Must: is the strongest and most serious modal verb. It is not utual use it in questions. It is used in futre tense and present simple tense.

Have to: is not as strong as must, it is used in informal speech in affirmative, negative and interrogative forms, it can be used in present, past and future tenses.

Need to: it shows a necessity to do something in affirmative form. It can be used in present, past and future tenses.

Examples

I must study tonightHe mustn´t be late for the meeting He has to finish his homework You don´t have to listen to pop music. I need to see you. I miss you I don´t need to go to the store today

Modal verbs of Permission and prohibition

They are use to ask for permission or express permission meaning.

May I use a calculator on the test? You can use my car if you like Could I have some more juice? These pages may be photocopied for classroom use. Can I play music?

Modal Verbs of Permission

We use could to ask for permission (but not to give it) Could is more formal and polite than can

We often use can to aks for and give permission

May is the most formal whay to ask for and give permission.

eXAMPLES

Visitors mustn´t park in the staff car park. You musn´t be late to class. You can´t take photos in the museum. They´re really strict about it Sorrry, we can´t sell knives ot under -18s