II.Замените модальные глаголы, данные в скобках на подходящие эквиваленты.

1. According to her father's plans Sophia (must) get a sound education. 2. As there were no teachers in Palibino Sophia's father (must) invite an experienced teacher from St. Petersburg. 3. To cover the school programme Sophia's teacher (must) instruct her in languages, arithmetic, grammar, literature, geography and history. 4. Sophia (can) speak and write French quite well since her childhood. 5. Sophia was a very capable pupil. She (can) write excellent compositions and solve complicated problems in mathematics as well. 6. Her teacher didn't expect that at the age of twelve Sophia (can) suggest a new solution for the determination of the ratio of the diameter of the circle to its circumference. 7. At the age of sixteen Sophia asked her father for permission to go on with her studies in St. Petersburg. "You (must) take private lessons, as women (may not) attend lectures at the University," he said. 8. He told her that women (must) obtain special permission from the University authorities. 9. Sophia did get that permission, but still she (may not) take examinations. 10. "I (must) go abroad to complete my education," decided Sophia.

III.Переведите следующие предложения и объясните использование should.

1. One should know that S. Kovalevskaya made a valuable addition to the results submitted by Euler and Lagrange. 2. The Paris Academy of Sciences decided that the prize for her remarkable work "On the Theory of the Movement of a Solid Boby about an Immovable Point" should be doubled. 3^When she was awarded another prize by the Swedish Academy of Sciences and, at the same time, offered lectureship in Stockholm she said: "I knew I should get a position somewhere." 4. When the Swedish scientists had discussed her works they decided that she should be elected professor of mathematics. 5. When in 1891, at the age of 41, she was at last elected member of the St. Petersburg Academy of Sciences, she said: "I did hope I should win recognition in my own country." 6. It should be kept in mind that it is hard labour that makes a gifted person a great scientist.

IV. Замените would на used to где это возможно.

1. While Sophia Kovalevskaya was in Heidelberg she would attend lectures on mathematics and do a lot of practical work, as well. 2. She thought she would do research under such scholars as Helmholz and Bunzen. 3. When Kovalevskaya returned to Russia, she was not allowed to take her degree there, but she would not surrender. 4. Again she went to Berlin to complete her work on the refraction of light in crystals. She hoped she would be able to get a degree there. 5. It was characteristic of her that whatever she did, she would do it well. 6. While she was completing her research in Berlin, she didn't think that soon she would be obliged to return home. 7. The University authorities would not permit a woman to work at the University. 8. Along with research Sophia would do a lot of literary work. 9. As she was a member of the Literary Club she would go there quite often. 10. For a number of years she would publish her papers abroad, that is why her name became known in many countries.