4TSO Unit 4 les 1.3

• Engels
• Middelbare school

Unit 6 - lesson 1.3

Arguing with your parents 

What did we discuss last time?

Aims/objectives:

By the end of this lesson, you should be able to...

* act out a dialogue on fighting with your parents; 

* use the modals of obligation  in a sentence;

What do you argue
about with your parents?

Listening exercise p. 240

Speaking + acting 

• Work in pairs (one parent / one child);
• Use the orange box on p. 240

Modal verbs: modals of obligation

to have: 

I have to be on time.

You have to be on time.

We have to be on time.

They have to be on time.

He/she has to be on time.

I must stop smoking. 

It’s costs too much money. 

My doctor said that I have to stop smoking or I'll risk serious problems. 

MUST

> The obligation comes from

 the speaker

- the speaker thinks it is necessary;

- the speaker obliges someone/himself/herself;

- not a law or a rule

Teacher:

You must complete the essay by Friday. 

HAVE TO 

> The obligation comes from somebody else. 

*  a law or a rule

* the speaker can NOT change it

 Students:

We have to complete the essay by Friday.

You don't have to wear a tie to go to that restaurant but it would be nice.

Students don't have to wear a uniform at this school. 

She must not forget her books.

You mustn’t be late for class.

You mustn't keep driving when the traffic light is red. 

DON'T HAVE TO 

* No obligation

* Not necessary/compulsory

*You can do it (if you want to)

You don't have to wear a tie to go to that restaurant but it would be nice.

MUSTN'T 

* FORBIDDEN!

* NOT ALLOWED!

* IMPORTANT! 

You mustn’t be late for class.

You mustn't use your phone in class.

Questions have to vs. must 

You _____
stop at the red light

1. must
2. have to

I _________ get another dog soon.

1. must
2. have to

Snow has blocked the roads. We ____ stay here until it's cleared.

1. must
2. have to

Questions don't have to vs. musn't 

You ___ come to the meeting but it would help us all if you’re there.

1. mustn't
2. don't have to

You _________ forget your passport on your trip to New York.

1. mustn't
2. don't have to

You _________ drink that.

1. mustn't
2. don't have to

Workbook ex. 12/13 p. 240-241

Game time! 

You are planning a trip to Asia.

You are receiving offensive
messages on Facebook.

You are driving to an important
meeting and you are late.

Your car has just broken down in

the middle of the street.

You are receiving offensive
messages on Facebook.

You are a witness in a criminal

case.

Write a sentence about a rule at your school using the correct modal (+ or -).

Write a sentence using 'must'.