Exercise 3:For each of the given situations write two sentences: a) using can,and b) using can’t

Exercise 2:use could

MODAL AUXILIARIES

CHAPTER 4

MODAL AUXILIARIES: INTRODUCTION

Can a) I can speak English Could b) He couldn’t come to class May c) It may rain tomorrow Might d) It might rain tomorrow Should e) Mary should study harder Had better f) I had better study tonight Must g) John must see the doctor today Will h) I will be in class tomorrow Would i) Would you please close the door?	Can, could, may, might, should, had better, must, will and would are followed by the simple form of the verb. They are not followed by to: CORRECT: I can speak English INCORRECT: I can to speak English
Have to j) I have to study tonight Ought to k) You ought to study hard	Have, ought are followed by an infinitive (to + the simple form of the verb)

Exercise 1: add to where necessary.

1. I have ______ go downtown tomorrow.

2. Tom can ______ play soccer.

3. Could you please ______ open the windows?

4. The students must ______ learn all of irregular verbs.

5. Sally has _____ do her homework tonight.

6. I think you should ________ take better care of your health.

7. I ought _____ go to the post office this afternoon.

8. Would you ______ speak more slowly please?

9. We may _____ go on a picnic tomorrow.

10. Tom and I might _______ go to the zoo tomorrow.

11. You had better _______ see a doctor.

12. We can _______ go shopping tomorrow.

13. The students have ______ take a test next Friday.

14. I have got ______ go to the post office this afternoon.

1. What could you do when you were a child that you can’t do now?

2. What could you do when you were living in your own country or hometown that you can’t do now?

3. What did you want to do yesterday or last week but couldn’t do? Why couldn’t you do it?

4. Who has missed class recently? What couldn’t you do when you were sick?

5. Who has had a cold or the flu recently? What couldn’t you do when you were sick?

1. Jack’s friends are going to the park to play soccer. Jack wants to play too, but he has a broken toe, so he’s on the crutches.

a) Jack can go to the park and watch the game.

b) He can’t play the game.

2. Bob is going to a dinner party at a fancy restaurant. He doesn’t know what to wear.

a) __________________________________________________________

b) __________________________________________________________

3. Mary is at a department store. She has fifty dollars. She intends to spend all of it. She wants to buy the following things: a dress, a sweater, a pair of shoes, a pair of earrings.

a) __________________________________________________________

b) __________________________________________________________

4. Barbara has to go to the airport. The airport is ten miles from her house. How is she going to get there?

a) _____________________________________________

b) _____________________________________________

5. Alice lives in this city. She has four days to take a trip somewhere. She is going to drive her car. Where can she go?

a) _____________________________________________________

b) ______________________________________________________

6. The temperature today is around -20 degrees. Ann and Jerry don’t have class today. They don’t want to stay at home.

a) ____________________________________________________

b) ____________________________________________________

4-1 EXPRESSING POSSIBILITY: MAY AND MIGHT; EXPRESSING PERMISSION: MAY AND CAN. ASKING FOR PEMISSION: MAY I, COULD I, CAN I

a) It may rain tomorrow. b) It might rain tomorrow. c) A: Why isn’t John in class? B: I don’t know. He may (might) be sick today.	Mayand mightexpress possibility in the present or future. They have the same meaning between a) and b).
d) It may not rain tomorrow. e) It might not rain tomorrow.	Negative: may notand might not.
f) Maybe it will rain tomorrow. g) Maybe John is sick.	Maybeis an adverb meaning perhaps.
h) Yes, children, you may have a cookie after dinner. i) Okay, kids, you can have a cookie after dinner.	Mayis also used to give permission. Often canis used to give permission,too. But mayis more formal than can.

POLITE QUESTIONS	POSSIBLE ANSWERS
May I please borrow your book? Could I please borrow your car? Can I please borrow your pen?	Yes. Yes, of course. Yes, certainly. Of course. Certainly. Sure (informal) Okay (informal)	People use may I, could Iand can Ito ask polite questions. The questions ask for someone’s permission. Pleasecan come at the end of the question. Pleasecan be omitted.

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