Modals for obligation and prohibition

Modal Verbs of Obligation and Prohibition!

Right you lovely lot!I am here to tell you about

Modal Verbs of Obligation and Prohibition!Are you ready?

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Modal Verbs of Obligation and Prohibition!

What are

Modal Verbs of Obligation and Prohibition!Answer now!

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Modal Verbs of Obligation and Prohibition!

• Must / mustn’t• Have to / don’t have to

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Modal Verbs of Obligation and Prohibition!

Present Positive Negative

must / mustn’t strong obligation (possibly based on the speaker’s opinion) • I must study today.

Prohibition• You mustn’t smoke here.

have to / don’t have to

strong obligation (possibly from outside / compulsory) • Children have to go to school.(sometimes ‘have got to’)

no obligation• I don’t have to work on Sundays• You don’t have to eat anything you don’t like.

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Modal Verbs of Obligation and Prohibition!

Right! Understood?You are going to look at some photos and make sentences!

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Modal Verbs of Obligation and Prohibition!

... Wait for it...

Wait for it...

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Modal Verbs of Obligation and Prohibition!

The following things are prohibited

So now make some sentences!

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Modal Verbs of Obligation and Prohibition!

... Wait for it...

Wait for it...

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You mustn’t eat junk food!

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You mustn’t use your phone!

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You mustn’t drink alcohol!

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You mustn’t smoke!

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You mustn’t come in!

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You mustn’t sleep in class!

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You mustn't get stressed!

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Modal Verbs of Obligation and Prohibition!

The following things are obligatory

So make some sentences!

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You must eat well!

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You must keep fit!

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You must put rubbish in the bin!

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You must speak English in class!

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You must do the homework!

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Modal Verbs of Obligation and Prohibition!

The following things are compulsory

So make some sentences!

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You have to have a passport

to travel to another country!

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You have to get a job!

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You have to pay taxes!

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In most of the world you have to drive

on the right!

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They have to wear a uniform!

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Modal Verbs of Obligation and Prohibition!

The following things are not obligatory

So make some sentences!

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Don’t have to =

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You don’t have to get up early at the weekend!

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You don’t have to look smart at the weekend!

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You don’t have to work on holiday!

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You don’t have to do anything on holiday!

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The End! You don’t have to do any

more!

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Modal Verbs of Obligation and Prohibition!

Present Positive Negative

must / mustn’t strong obligation (possibly based on the speaker’s opinion) • I must study today.

Prohibition• You mustn’t smoke here.

have to / don’t have to

strong obligation (possibly from outside / compulsory) • Children have to go to school.(sometimes ‘have got to’)

no obligation• I don’t have to work on Sundays• You don’t have to eat anything you don’t like.

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