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II. Modal verbs: must, may, can, needn't

  1. Open the brackets replacing the Russian verbs with the English modal verbs must/mustn't, may/may not, can/can't, needn't.

    1. The cadets (должны) attend all practical classes.

    2. Some cadets in our group (могут) speak English quite well.

    3. I (не умею) drive a car. I (должен) learn to drive it.

    4. We (можно) come to the University a little later on Saturday.

    5. Every cadet (должен) pass four exams at the end of the semester.

    6. Our teacher in Maths (умеет) explain the material very clearly.

    7. You (можно) go home immediately after the classes, if you (нет необходимости) attend any consultations.

    8. Two cadets (не могут) be present at the lecture, they are ill and (должны) stay at home.

    9. A watch keeping officer (нельзя) leave the bridge while on watch.

    10. Classes start at 9 o'clock a.m., so you (не должен) be late for them.

2. Complete the sentences with must/mustn't, may/may not, can/can't, needn't.

  1. All marine engineers … keep watches in the engine room in turns.

  2. When in port a seaman … go ashore if he is not free of work.

  3. Cadets … repair the engine room machinery, they … learn how to do it.

  4. If there is a problem during the watch the watch keeping engineer … report it to the Chief Engineer but he … go to him, he … call him.

  5. Any navigator … know how to take bearings, but he … know how to repair the engine.

  6. The Chief Engineer … keep watch in the engine room, but he is responsible for its work.

  7. You … speak English well, so you … work hard at it.

  8. The cadets … buy many textbooks because they … borrow them from the library.

  9. The cadets … leave their classroom only when the lesson is over.

  10. The Chief Officer … always be ready to replace the Master.

3. Complete the following questions and answers with a suitable modal verb.

1. … your brother drive a car? – Yes, he is a good driver. … he repair it? – No, he … .

2. What … you prepare for the next lesson? – Our home task is to read and translate the text. – … you do it without a dictionary? – I think, I …, because the text is not easy.

3. Hi, … I come in? – Yes, certainly, you … . What … I do for you? – I … see Mr. Kerry and talk to him. – Oh, it's a pity, you … see him at the moment. He is not in. … you wait for him a little? – Yes, sure. … I come a little later? – Oh, no, you … go away, you … stay here.

4. Ask questions to the words in italics.

  1. This pumpman can operate a pump of any type.

  2. The fourth engineer must take over the watch in an hour.

  3. The watch keeping navigator may not leave the bridge while on watch.

  4. An experienced marine engineer can teach young engineers many useful things.

  5. A navigator cannot repair the engine room machinery.

  6. The radio-operators must maintain the ship's communication equipment in good serviceable condition.

  7. A visitor on board a ship may not enter the engine room without a special permission because it's a high risk space.

  8. The second engineer must replace the Chief Engineer if it's necessary.

  9. Cadet Bodrov can't attend the lessons today because he is ill.

  10. Marine engineers mustn't keep watches on the bridge.

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