Unit 6 Open Mind Pre Intermediate

8/19/2019 Unit 6 Open Mind Pre Intermediate

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Must vs Have to for obligation and necessity.

Present and Future

Must refers to obligations which come from the speaker and may be directed at the

speaker or the listener:

I really must give up smoking. (directed at the speaker)

You must keep this secret. (directed at the listener)

Have to expresses external obligations, which come from outside of the speaker. These

may be rules and regulations imposed by an external authority:

I have to get to work by 9 every day. Do you have to wear a uniform at your school?

Absence of obligation is expressed with the negative form of have to, not

with mustn't. Mustn't is used to express that it is necessary not to do something:

don't have to get up early tomorrow. t's a holiday. ! can get up late."

#ou mustn't tell anyone. t's a secret. !$on't tell anyone."

Past

Must has no past form. nstead, we use had to to express past obligations:

%hen was at primary school, had to wear a uniform.

%e had to start all over again.

Exercise:

&omplete with have to / don’t have to / must / mustn’t

" t is very cold, we((((((((((((((((light the fire !a father to his son"

)" #ou(((((((((((((((( go to bed now. t is very late !obligation"

*" %hen was at university (((((((((((((study very hard !a mother to her daughter"

+" #ou(((((((((((((((((come back home before midnight

" The neighbours complained and the police told us that we(((((((((turn the music down

-" This is a secret you(((((((((( not say anything about it

/" #ou look very tired. #ou(((((((((((((((( rest



0" (((((((((((( tidy my room before my mum comes back

1" have fixed the toilet you ((((((((((call the plumber. 2e is not necessary

3" The lawyer told his client that he(((((((((((((confess.

" !A mother to her son" #ou((((((((( change your clothes they are very dirty

)" $uring the exam you(((((((((( speak to your classmates

*" !A boss to his employee" #ou(((((((((( finish your report before + o'clock

+" My father will bring the newspaper you ((((((((((( buy it

" %e have a lot of food for the party you (((((((((((( bring anything

-" f you want to lose weight you(((((((((((((((( stop eating so much

/" #ou(((((((((((((( leave my house immediately if not will call the police

0" f want to go to the 45A (((((((((((((( get a 6isa

1" #ou((((((((((((( stop drinking so much you are destroying yourself

)3" 7ast summer, when went to 8reece ((((((((((((((( rent a car to visit all the ruins

)" The 9ormula pilot((((((((((((((((((( be very accurate to drive so fast

))" f you are assaulted in the street, you(((((((((((((( show any resistance

)*" n 5pain you((((((((((((((( always wear a helmet when you ride a motorbike

)+" f you don't want to miss your train, you((((((((((((((((((( leave now

Phrasal Verbs: Give away: donar

Hang up: colgar

Pick up: recoger / retirar

Put away: ordenar / guarder / apartar

Take out: sacar ( sth), inviter a salir (sb)

Throw away: tirar / deshacerse de

Tidy up: organizar / arreglar / asear





.2elen (((((((((((((((more careful at night.

).The members of the organi@ation agree that ((((((((((((oin it.

*.#ou(((((((((((((provide proper identification in order to cash a check.

+.They((((((((((((work harder if they are to succeed.

.#ou((((((((((((((take an umbrella with you, in case it starts to rain.

-. ((((((((((((answer his letter as soon as possible







11 Helen ought to be more careful.

Documents

Unit 6 Open Mind Pre Intermediate