This document discusses the use of must and have to to express obligations and prohibitions. It provides examples of sentences using must and have to, noting that must is used for personal obligations while have to is used for external obligations like rules or regulations. The document then demonstrates how to form sentences, questions, and negative sentences using must and have to with different subjects. Students are prompted to practice forming their own examples.

1. Today’s class…
Must
Have to

2. THE OBJECTIVE OF THIS CLASS IS:
• Express obligations and
prohibitions

3. What do we use Must
and have to for?

4. Must vs Have to
I must stop smoking. (I want to.)
I have to stop smoking. Doctor's orders.
This is a terrible party. We really must go home.
This is a lovely party, but we‘ have to go home
because of the baby-sitter.
Must you wear dirty old jeans all the time? (Is it
personally important for you?)
Do you have to wear a tie at work? (Is there a
regulation?)
.

5. What can you notice about
the sentences above?

6. We use must and have to express
obligations.
• Utilizamos must y have to para
expresar obligaciones.

7. Now you try …
What do you have to do
everyday?

8. Did you say…
I must come to school
They have to wear
the school uniform

9. How do I make a sentence?
With the pronouns: I
 He You
 She has to We have to Listen
 It They
I have to come to school from Monday to Friday
She has to be prepared for the exam
They have to eat at home

10. How do I make a sentence?
With the pronouns:
I, you, she, he, it, we, they
Must study for the upcoming English test
I must come to school from Monday to Friday
She must listen to her mother

11. Now practice
• Describe the pictures in the next
slide using must or have to

12. Drink
Sleep
Study
Eat

13. Now practice
• Write and talk about activities you
must/ have to do during the week
• Ask your partner what his/her
parents must do or have to during the
week

14. How do I make a negative sentence? It`s not
really necessary to do something
With the pronouns: I
 He You
 She doesn`t We don`t have to
 It have to They
I don`t have to go to school
She doesn`t have to wear pajamas to sleep

15. How do I make a negative
sentence? As prohibitions
With the pronouns:
I, you, she, he, it, we, they
Must not speak loudly
I must not smoke in a gas station
She must not cross that yellow line

18. Now practice
• Write and talk about prohibitions in
the school
• Ask your partner what he doesn`t
have to do during the weekend

19. How do I make a question?
With the pronouns: I
 He You
 Does She have to Do We have to
 It They
Do I have to bring anything to your party?
Does she have to wear a uniform?

20. How do I make a question ? It`s not
commonly used
With the pronouns:
I, you, she, he, it, we, they
Must you speak loudly?
Must you wait for her?
Must we use the public transportation?

21. Now practice
• Make questions about activities you
have to do everyday