Неличные формы английского глагола. Коптева Н.Ю. - 47 стр.

     5. We shall have to overcome some difficulties.
     6. Our students have to take four examinations in winter.
     7. We have to consider a lot of questions at the meeting.
V.   Express agreement with the following statements and restate them.
     Use «Quite so» as an opening phrase. Follow the model.
     Sp.: It was Becquerel who discovered the phenomenon of
        radioactivity.
     St.: Quite so. Becquerel was the first to discover the phenomenon
        of radioactivity.
     1. It was Bohr who used a structural model of the atom in his
        research.
     2. It was Maxwell who created the electromagnetic theory.
     3. It was Hertz who verified the theory of electromagnetic waves.
     4. I t was Hertz who detected the electric waves in space.
     5. It was Faraday who introduced the field concept to physics.
     6. It was Cavendish who did his investigations in this field.
     7. It was the scientist who made an attempt to study the
        phenomenon in detail.
                    The Infinitive in the function
                      of an adverbial modifier
I.   Restate the following sentences according to the model.
     Sp.: He considered that it was important to provide answers to
          their questions.
     St.: He considered it important to provide answers to their
             questions.
     1. He thought that it was necessary to simplify the procedure.
     2. He thought that it was useful to touch on a variety of more
        general topics.
     3. He found that it was impossible to consider all these problems
        in one article.
     4. He didn’t consider that it was easy to compare these substances.
     5. We think that it is difficult to prolong the lifetime of these
        devices.
     6. He found that it was impossible to adapt his plans to suit new
        circumstances.
     7. They thought that it was necessary to take particular care over
        doing that task.


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