Определите функции инфинитива и переведите предложения на русский язык:
1. To dissolve this substance is difficult.
2. To launch rockets a new type of fuel was needed.
3. The purpose of tension test is to determine the mechanical characteristics of a material.
4. The northernmost Russian health-resort is to be founded soon in Siberia, on the banks of the river Lena.
5. When airplanes appeared, Amundsen learned to fly, becoming the first Norwegian civilian flier.
6. The design of a mechanism depends on the work to be done.
7. To use atomic energy for peaceful purposes is the task of our scientists.
8. The substance to be tested must be wet or in a solution.
9. It is very important to determine the degree of radiation during a flight.
10. To determine the density of a body, it is necessary to determine its mass and its volume.

1. To dissolve this substance is difficult. (что?) Растворить это вещество сложно. Подлежащее
2. To launch rockets a new type of fuel was needed. (зачем?) Для запуска ракеты необходим новый тип топлива.  обстоятельство цели
3. The purpose of tension test is to determine the mechanical characteristics of a material. Цель испытаний на растяжение (какая?) определить механические характеристики материала. Определение
4. The northernmost Russian health-resort is to be founded soon in Siberia, on the banks of the river Lena. Самая Северная Российская здравница скоро будет создана в Сибири, на берегах Лены. В составе сказуемого
5. When airplanes appeared, Amundsen learned to fly, becoming the first Norwegian civilian flier. Когда появились самолеты, Амундсен научился (чему?) летать, став первым норвежским гражданским летчиком. Дополнение
6. The design of a mechanism depends on the work to be done. Конструкция механизма зависит от работы, (какой?) которая должна быть сделана. Определение
7. To use atomic energy for peaceful purposes is the task of our scientists. (что?) Использовать атомную энергию в мирных целях - задача наших ученых. Подлежащее
8. The substance to be tested must be wet or in a solution. (какое?) Испытываемое вещество должно быть влажным или находиться в растворе. Определение
9. It is very important to determine the degree of radiation during a flight. Это очень важно (что?) определить степень радиации во время полета. Дополнение
10. To determine the density of a body, it is necessary to determine its mass and its volume. (зачем?) Чтобы определить плотность тела, необходимо определить ее массу и объем. Обстоятельство цели

Перепишите следующие предложения, употребляя сложное дополнение с инфинитивом вместо придаточных дополнительных предложений.
E.g. I expect that she will send me a letter. I expect her to send me a letter.
1. “Don’t touch anything,” the man said to me. The man told … 2. “Don’t forget to mail the letter,” Jack reminded … 3. I told you that shouldn’t tell anything. I warned … 4. I was surprised that it rained. I didn’t expect … 5. “Would you like to have diner with me?” Tom said to Ann. Tom invited … 6. At first I didn’t want to play tennis, but Jane persuaded me. Jane persuaded … 7. The sudden noise caused me to jump. The sudden noise made … 8. If you have a car, you are able to travel around more easily. Having a car enables …

1. “Don’t touch anything,” the man said to me.
The man told me not to touch anything.
2. “Don’t forget to mail the letter,” Jack reminded.
 Jack reminded me not to forget to mail the letter. 
3. I told you that you shouldn’t tell anything.
I warned you not to tell anything.
4. I was surprised that it rained.
I didn’t expect it to rain.
5. “Would you like to have dinner with me?” Tom said to Ann.
Tom invited Ann to have dinner with him.
6. At first I didn’t want to play tennis, but Jane persuaded me.
Jane persuaded me to play tennis.
7. The sudden noise caused me to jump.
The sudden noise made me jump.
8. If you have a car, you are able to travel around more easily.
Having a car enables you to travel around more easily.

Найти в каждом предложение глагол, определить их видовременную форму и укажите их инфинитив.
My native town is Grodno. It’s an ancient town. Not long ago it celebrated its 850th anniversary. the town of Grodno is situated on the river Neman. The older part of the town lies on the right bank of the Neman. Here you can see the old castle where kings once lived. Now it is a museum of history and archeology.

Is-глагол to be в Present Indefinite(Simple) Active.
В следующем предложении тоже Is и всё так же.
celebrated-to celebrate в Past Indefinite(Simple) Active
is situated-to situate в Present Indefinite(Simple) Passive.
lies-to lie в Present Indefinite(Simple) Active
can -модальный глагол can в Present Indefinite(Simple)
see-Present Simple Infinitive
lived-глагол to live в Past Indefinite(Simple) Active
Последний глагол снова is, про него уже написано.

II. Перепишите предложения и переведите их на русский язык. Подчеркните инфинитив, определив его форму.
1. Supply of goods is not enough to meet the demand requirements.
2. They happened to be discussing something when I came in.
3. This financial capital could have been used elsewhere.
4. The aim of macroeconomics is to study the economy in general.
5. He wants to be asked a question.

1. Supply of goods is not enough to meet ( simple) the demand requirements.
2. They happened to be discussing (continuos) something when I came in.
3. This financial capital could have been used (perfect passive) elsewhere.
4. The aim of macroeconomics is to study (simple) the economy in general.
5. He wants to be asked (simple passive) a question.
1. Поставки товаров недостаточны для удовлетворения требований спроса.
2. Случилось так, что, когда я вошел, они что-то обсуждали.
3. Этот финансовый капитал мог бы использоваться в другом месте.
4. Целью макроэкономики является изучение экономики в целом.
5. Он хочет, чтобы ему задали какой-нибудь вопрос.