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Е. Карневская, З. Курочкина, Е. Мисуно -- On th....doc
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2.1.2. Insert can (can't), could (couldn't) or the appropriate form of to be able to.

1. I... play tennis in my youth, but I ... play it any more. 2. You ... buy powder and lipstick at the perfumer's. 3. If she has enough money, she ... go to the seaside. 4.1 am afraid I... settle this problem till Friday. 5. The vase was so beautiful that I... help buying it. 6. My grandmother liked music. She ... play the piano very well. 7. The noise was deafening. I... hear anything. 8. The tennis match wasn't easy but I... win it. 9. He didn't want to come but in the end we ... persuade him. 10. I work hard at French. I hope I ... speak French fluently in a couple of months. 11. No wonder Jack ... get to college. He is so hardworking. 12. Mrs. Lawrence has to wear glasses. She ... see very well. 13. Paul felt much better on Sunday, and so he ... play in the match. 14. It was dark. We ... see a thing. 15. They were whispering so I... hear what they were saying very clearly. 16.1... buy that book because Т didn't bring any money with me. 17. I'm sorry, but I won't come to the party on Saturday. 18.1... finish all the work vou wanted me to do yesterday. 19. The manager wasn't in the office for very long, but we ... to speak to him for a few minutes. 20. On entering the house I ... smell something burning in the kitchen. 21.1 am usually very good at tennis, but yesterday I ... beat my brother. 22. When we lived on the coast, we ... swim in the sea every day. 23. If you don't tell me what your problem is, I... help you. 24.1 got home early last night, so I... watch my favourite programme on TV. 25.1... eat anything when I was younger, but now I have to be more careful. 26. Fortunately he ... convince the police that he was innocent.

2.2. Can, could, may, would

2.2.1. Study the following notes and examples.

May, like can, denotes possibility.

You may find his number in the telephone book. May, can and could are used to request permission. Can is used informally to request permission, especially if the speaker is talking to someone she/he knows fairly well. It is usually not considered as polite as may or could, which are equally polite. Would (you) is also used to express a polite request. The difference between Would (you) and Could (you) is slight.

Would you ~ Do you want to do this, please? Could you = Do you want to do this, please, and is it possible for you to do this? Would also expresses an offer.

Would you like an ice-cream? Can (could) you do me a favour?

Can (could) you tell me the way to the nearest post-office?

Can (could, may) I use your phone? Can (could, may) I borrow your dictionary?'- Yes, of course. (Certainly)

Can (may) I keep the dictionary till Monday?- No, you may not. (I am afraid not) Would you like a cup oj coffee? Would you pass me the salt, please?

2.2.2. Turn instructions into polite requests.

1. Give me your full name.

2. I can't hear you very well. Speak up.

3. Give me a little more time.

4. Tell me when you are ready.

5. Do the shopping on your way home.

6. Tell them that I called.

7. Give me some advice about buying a computer.

8. Wait here for just a minute.

9. Finish the work by yourself.