An English-Zone.Com Lesson: Have to / Has to / Don't have to / Doesn't have to

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NECESSITY and LACK OF NECESSITY
complete the chart:

AFFIRMATIVE SENTENCES	SUBJECT	MODAL	VERB	EXAMPLES
affirmative sentences ( + ) NECESSITY: have to/has to meaning: It is necessary.	I you we they	have to	clean get pick up have eat go work	I have to clean my room. You have to get a new shirt. We have to pick up the laundry. They have to have a notebook.
	he she it	has to		He has to eat dinner now. She has to go to work now. It has to work.

NEGATIVE SENTENCES	SUBJECT	MODAL	VERB	EXAMPLES
negative sentences ( - ) LACK OF NECESSITY: don't have to/doesn't have to meaning: It is not necessary. You have a choice.	I you we they	don't have to	work do clean eat work go be	I don't have to work on Saturday. You don't have to do that. We don't have to clean the car. They don't have to eat pizza.
	he she it	doesn't have to		He doesn't have to work tomorrow. She doesn't have to go today. It doesn't have to be that way.

QUESTIONS	DO	SUBJECT	MODAL	VERB	EXAMPLES
questions ( ? )	Do	I you we they	have to	clean get pick up have eat go work	Do I have to clean my room? Do you have to get a new pen? Do we have to pick up the laundry? Do they have to have a notebook?
	Does	he she it			Does he have to eat dinner now? Does she have to go to work now? Does it have to work?

Section A: Pizza!	(necessary)	(not necessary)
1. When you make pizza, you ___ have some pizza sauce.	a) have to b) has to	c) don't have to d) doesn't have to
2. You also ___ have some cheese on top of the pizza.	a) have to b) has to	c) don't have to d) doesn't have to
3. You ___ have peppers on your pizza, but you can if you want to.	a) have to b) has to	c) don't have to d) doesn't have to
4. A good pizza ___ taste good.	a) have to b) has to	c) don't have to d) doesn't have to
5. So, you ___ choose the pizza toppings that you like best.	a) have to b) has to	c) don't have to d) doesn't have to
6. Personally, I love tomatoes, so I always ___ have tomatoes on my pizza!	a) have to b) has to	c) don't have to d) doesn't have to
7. You ___ make your own pizza, you can buy a pizza from a pizza shop if you want to.	a) have to b) has to	c) don't have to d) doesn't have to
8. Pizza tastes best when it's hot, but you ___ eat hot pizza. You can eat it cold too.	a) have to b) has to	c) don't have to d) doesn't have to

Section B: Help Wanted:

Help Wanted: Secretary. No experience necessary. Must type 50 words per minute. Work Monday-Friday, weekends off. Answer phones, use computer, file reports.

Read the advertisement, then choose the correct words below.

9. The secretary ___ know how to type.

a) have to
b) has to

c) don't have to
d) doesn't have to

10. A secretary ___ be a woman. The secretary can be a man.

a) have to
b) has to

c) don't have to
d) doesn't have to

11. ___ the secretary ___ work Saturdays?

a) Do / have to
b) Does / have to

c) Do / has to
d) Does / has to

12. No, he/she ___ go to work on saturdays.

a) have to
b) has to

c) don't have to
d) doesn't have to

13. The secretary also ___ answer the company's phones....

a) have to
b) has to

c) don't have to
d) doesn't have to

14. ...and he/she ___ file reports every week.

a) have to
b) has to

c) don't have to
d) doesn't have to

15. ___ the secretary ___ use a computer?

a) Do / have to
b) Does / have to

c) Do / has to
d) Does / has to

16. Yes, He or she ___ use a computer.

a) have to
b) has to

c) don't have to
d) doesn't have to

Section C: On Health...
17. People ___ eat food to stay alive.	a) have to b) has to	c) don't have to d) doesn't have to
18. People ___ eat pizza and candy to stay alive. They can choose healthy food.	a) have to b) has to	c) don't have to d) doesn't have to
19. A person ___ drink water to stay alive.	a) have to b) has to	c) don't have to d) doesn't have to
20. A person ___ smoke cigarettes to stay alive.	a) have to b) has to	c) don't have to d) doesn't have to

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