This document discusses the use of "have to" and "don't have to" to express obligation and lack of obligation. It provides examples of affirmative and negative sentences using "have to" and "doesn't have to/don't have to" with subjects like I, you, she, he, we and they. It also gives examples of question forms using "do/does...have to". The document concludes with exercises to practice using these structures in sentences and filling in the correct form of "have to", "doesn't have to" etc.

1. HAVE TO /
DON’T HAVE TO
Miss Karen Vargas

2. HAVE TO
 We use HAVE TO to express obligation (when
something is necessary) in the present or future.

3. The boy has to wake up at 7 o’clock in the morning.
Examples:
The boys have to study hard.

4. Affirmative Sentences
 I / YOU/ WE / THEY
You HAVE TO arrive on time to classes
 SHE/ HE / IT
She HAS TO brush her teeth everyday
HAVE TO
HAS TO
S + HAVE TO/ HAS TO + VERB + COMPLEMENT

5. DON’T HAVE TO
 We use DON’T HAVE TO to express absence of
obligation (=when something is not necessary to
do)

6. The children don’t have to go to school today.
It’s Saturday!
She doesn’t have to eat all the fruits.

7.  I / YOU / WE / THEY
We don’t have to get up early on Sundays
 SHE / HE / IT
He doesn’t have to get up early on Sundays
DON’T
DOESN’T
Negative Sentences
S + DON’T HAVE TO/ DOESN’T HAVE TO + VERB + COMPLEMENT

8. DO
DOES
I/ YOU/ WE/ THEY HAVE TO…?
HE/ SHE/ IT HAVE TO…?
DO/ DOES + S + HAVE TO+ COMPLEMENT?

9. QUESTIONS
 Do you have to eat the vegetables?
Yes, I do. / No, I don’t
 Does he have to eat the vegetables?
Yes, he does/ No, he doesn’t

10. LET’S PRACTICE

11. Order the following sentences
1.- clean your room/ have to/ you
2.- they/ play football/ Do/ have to ?
3.- don’t have/ I/ make my bed.

12. 4.- do the dishes/ has to/ she.
5.- cut the grass/ Does/ have to/ he?
6.- She/ study/ has to/ everyday.

13. Complete with HAVE TO/ HAS TO/ don’t have
to/ doesn’t have to
1.- Sarah_________ study hard for the exam.
2.- David ________ clean his room.
3.- I __________ cut the grass every Sunday.
4.- Andres__________ to play football after
class.
5.- You____________ make your bed
everyday.
HAS TO
HAS TO
HAVE TO
HAS TO
HAVE TO

14. 6.- She________________ (negative) go to school
on Saturday.
7.- I ___________ brush my teeth everyday.
8.- You________________ (negative) do the
dishes.
9.- He________________(negative) make his bed
in the morning.
DOESN’T HAVE TO
HAVE TO
DON’T HAVE TO
DOESN’T HAVE TO