Волокна и ткани в текстильной промышленности. Биева Е.Г. - 24 стр.

Причем “ought to” и “should” обозначают моральную обязанность,
“be to”- обязанность в силу договоренности, плана, приказа;
“have to” - вынужденную необходимость.
Глаголы “have to” и “be to” употребляются во всех временных формах.

1. She is ill, you should see a doctor. 2. They ought to inform his mother. 3. Alice was to come
by train yesterday. 4. We have to do it at once. 5. He had to tell me about her illness. 6. We are
to leave for Paris next week.


2. Модальные глаголы образуют отрицательную и вопросительную формы без
вспомогательных глаголов.

  1) May I smoke here ? – No, you mustn’t.
  2) Could he skate and ski ? – Yes, he could.
                              - No, he couldn’t.
  3) She cannot read English books without a dictionary.
  4) They ought to speak to the teacher, oughtn’t they ?
  5) When may I come in ?
  6) The doctor said she might not leave the room.


II.     Определите значение модальных глаголов                 и   поставьте    предложения      в
      вопросительную и отрицательную форму.

      1. You may take my dictionary. 2. Nobody could answer this question. 3. He can speak
      German. 4. We must study well. 5. You should come in time. 6. He was to come to the
      conference. 7. They will have to discuss this question. 8. You ought to help her. 9. She must
      use a dictionary at the lesson. 10. The students are to come to the laboratory.


III. Определите форму сказуемого и функцию глагола “to be” в предложениях.
    Переведите их.

      1. This text is not difficult. 2. We shall be at the conference tomorrow. 3. You were to
      translate the text for the previous lesson. 4. Flax is grown in many countries. 5. The
      properties of this fibre have been examined and now they are being discusses by the
      scientists. 6. New fabrics are to be produced at this mill soon. 7. I am at home now. 8. They
      were translating the text, when I was at the theatre. 9. An atom is composed of a number of
      electrons. 10. To live is to hope.


IV. Определите форму сказуемого и функцию глагола “to have” в предложениях.
    Переведите их.

       1. This laboratory has modern equipment. 2. They have just (только что) written a word
       dictation. 3. He had to work hard in order (чтобы) to have much money. 4. She has neither