I. Перепишите предложения, выбрав подходящий модальный глагол. Переведите предложения на русский язык.

Example: These samples ( may / have to/ is to) be chosen deliberately. – Эти образцы могут быть отобраны (можно отобрать) произвольно.

1. Morse partnered with Alfred Vail and (must/ was able to/ may) commercialize the technology with financial support from the US government.

2. Bell received the patent for the first telephone, but he (should/ must/ had to) fight numerous legal challenges.

3. When Rontgen first noticed the new rays he (shouldn’t/ could not/ may not) understand their nature.

4. No one (could/ have to/ may) enter the laboratory while the test is going on.

II. Перепишите предложения, подчеркните слова, которые выражены Participle I, Participle II или Gerund, указав, чем они являются (из вышеназванных). Переведите предложения на русский язык.

Example: There are several ways of obtaining this substance. (Gerund) – Существует несколько способов получения этого вещества.

1. In spite of not having a very exciting childhood, Einstein later appeared to have a vivid memory of it.

2. The electric current passing through a wire will heat that wire.

3. The beam of a laser can be focused very precisely.

4. Network hardware is made up of the physical components that connect computers.

III. Перепишите предложения, выбрав подходящие по смыслу видовременные формы глагола. Переведите предложения на русский язык. Укажите время и залог выбранных форм глаголов.

Example: The engineer was asked / asked to test the device. (Past Simple, Passive Voice) – Инженера попросили испытать механизм.

1. New methods of obtaining polymers applied/ had been applied at our plant.

2. Radio telescopes supplied/ are supplied with a precise control system.

3. The engineers were being carried out/ were carrying out an important experiment at 10 o’clock last Tuesday.

4. We will discuss/ will be discussed all advantages and disadvantages of the Internet at tomorrow’s conference.

IV. Определите глаголы-сказуемые в предложениях. Перепишите предложения, преобразуя глаголы-сказуемые из активного в пассивный залоги, сохраняя временные формы глаголов. Переведите предложения на русский язык.

Example: A.S. Popov invented theradio in 1895. – The radio was invented by A.S. Popov in 1895. – Радио было изобретено А.С. Поповым в 1895 году.

1. Our scientists are developing new units for these reactors now.

2. By the end of 19^th century scientists had made the first attempts to obtain synthetic materials.

3. We use metals for a variety of engineering purposes.

4. He will publish the results of the experiment next month.