Modal verbs must should ought to

by Eva Hugas

Modal verbs:

must/mustn’t

Have to/don’t have to

Should/ought to

by Eva Hugas

You must… = tu has de…

You mustn’t… = tu no has de…

You must study =

Tu has d’estudiar

Must is used to express obligation. It is used with the infinitive of the

verb without to.

We use MUST…

• In the present.

• To talk about something that is important,

an obligation, a rule or a law.

• We use mustn’t for PROHIBITION

• MUST and HAVE TO can have the same

meaning:

I must do my exams = I have to do my exams by Eva Hugas

by Eva Hugas

And how to say that

something is not

necessary?

You don’t have to wear something

just because it’s on fashion!

by Eva Hugas

EXERCISES

by Eva Hugas

You------------------do the housework

if you have a cleaning lady.

Anne works for a big company.

She-----------do her job on the computer.

don’t have to

has to

MUST / HAVE TO/

DON’T HAVE TO /

MUSTN’T

by Eva Hugas

Michael-------------take the bus to work

because he hasn’t got a car.

John----------------------- go to bed early today.

Tomorrow is a holiday and there is no school.

has to

doesn’t have to

by Eva Hugas

You-------------cheat in exams.

You -----------brush your teeth after meals.

mustn’t

must

by Eva Hugas

PLANNING A

PARTY…

Oh my god….

Buy Crisps!!

You ________Buy Crisps

You SHOULD Buy Crisps !

Don’t Forget to buy the

drinks!!

You __________Forget to buy

the drinks!!

You shouldn’t forget to

buy the drinks!!

You should… = tu hauries de…

You shouldn’t… = tu no hauries de…

You should buy =

Tu hauries de comprar

To give advice and suggestions

Giving advice in a magazine

Model: Question

Dear Amy,

Shoes with high heels are in fashion

And they make me feel tall

But I can’t walk in them.

What should I do?

Dear maria,

Dear Maria,

You should always wear shoes that are comfortable.

(first reason) High heels in particular are very unhealthy and can cause problems with your feet, legs, and back.

(second reason) Also, they are unsafe. Women in high heels fall more that women in flat shoes.

Take my advice – This is one fashion you should avoid.

by Eva Hugas