Álbum de fotografíaspor Anabel

Future probability

Institución Educativa Particular«Nuestra Señora de

Guadalupe»

CAN - HAVE TO - SHOULDMrs. Anabel Montes - English teacher

CAN: Can is an auxiliary verb, a modal auxiliary verb. We use can to:

Talk about possibility and abilityMake requestsAsk for or give permission

Structure of canThe basic structure for can is:

subject + auxiliary verbcan

+ main verb

Forms + I can play tennis

.- He cannot play tennis

.can't? Can you play tennis

?

My brother can play the piano.

Michael Phelps can swim very well.

The girl can ride a bike.

The babies can’t read.

He can’t run 10 km.

Can dogs speak?

No, they can’t.

Can cats climb trees?

Yes, they can.

Can you speak English?

weYes, you can. I

Expressing permission

We also use can /can’t to ask for and give permission.

Example:

Can I go to the toilet, please?

Yes, you can.

Can I speak to Homer Simpson, please?

No, you can’t. He’s sleeping at the moment.

REQUESTS

And we use “can” to ask somebody to do something!

-Can you …….., please?Example:

Can you close the door, please?

Can you turn on the lights, please?

Can you pass me some water, please?

HAVE TO :

We often use have to to say that something is obligatory, for example:

•Children have to go to school.

STRUCTURE

subject auxiliary verb

main verbhave

to-infinitive

+ She has to work.  - I do not have to see the

doctor.? Did you have to go to

school?

It is NOT necessary / there is no obligation

You don’t have to call him today. You can do it tomorrow if you like.

DON’T HAVE TO

Is a normal present simple verb. For questions forms , we use do/does + subject + have to + infinitive without to.Does he have to get more work early tomorrow?

HAVE TO

Should is a modal auxiliary that we use very frequently in English:

To give advice or a recommendation:Example:That new restaurant downtown is great! You should try it.

We also use should . . .To give our opinion about something.To say what we think is a good idea or the “right” thing to, do in our opinion.

*Should is not as strong as “must” or “have to”

Consider these examples . . .

You should stop smoking.(=it would be a good idea; this is my suggestion.)

You must stop smoking.(=it is necessary that you stop. You have to do it.)

The negative of should =

The mother told her child:“You shouldn’t eat too much candy, or you’ll get sick.”

The contraction (short) form is often used with the negative, especially in spoken English:

a) Every man__________________do military service in my country. It's obligatory.

b) When do we__________________pay for the next term?

c) Does Susan__________________work long hours?

EXERCISES1. Complete using HAVE TO /DON’T HAVE TO:

d) I__________________get up early on Sundays. I can stay in bed.

e) You__________________have a visa to come to Ukraine.

f) Every man__________________do military service in my country. It's obligatory.

1. He_____work in the evening.2. We________go shopping.3. The friends______get up early.4. Mandy__________read the

instructions.5. I____________play the guitar.

2. Complete using DOESN’T HAVE TO /DON’T HAVE TO:

a) you can play the violin? b) draw they can't well. c) play I basketball can. d) we can come house to your? e) she sleep can't f) you cook can? g) watch can television I?

3. Order:

You should take some medicine. You _______ get some rest. You _______ drink some orange juice. You shouldn’t go to work.You _______ go out in the cold.You _______ eat too much junk food.Should I call the doctor? Yes, you

should.______ I get some rest? Yes, you should.Should I go out in the rain? No, you

______.

4. Fill in the blanks