Ex. 2 Replace the following complex sentences or groups of sentences by simple sentences with the Infinitive.

Model: I entered this university because I wanted to study electronics.

I entered this university to study electronics.

1. If you want to become a successful engineer, you should constantly develop your knowledge and skills.

2. Mechanical engineers design machine-tools. This is their task.

3. Richard Trevithick, an English mechanical engineer and inventor, was the first man

who used a steam engine on a railway.

4. This engineer is not qualified enough. He can’t take part in the project.

5. The problem that we are to solve is connected with making the new body scanner as safe as possible.

6. I am glad that I have finished the calculations for the new engine at last.

Ex 3. Open the brackets using the appropriate form of the Infinitive.

1. Even in ancient times people were ingenious enough (to develop) efficient devices

and methods of work.

2. The methods (to introduce) are extremely useful for solving many practical problems.

3. Wind, water and sun may be used (to provide) energy.

4. The young engineer hoped (to involve) in designing a new type of engine.

5. He is lucky (to study) abroad and (to learn) so much.

6. It was very wise of you (to check) the results of the experiment once more.

When we have time for leisure, we usually need something that can interest and amuse us. There are several ways to do this. In big cities it's often difficult to decide where to go in the evening.If we want to go out there are a lot of theatres, cinemas and clubs in our country where we can spend our free time. (But in small towns and villages they have no actors of their own. So they invite a group of actors from a big town to show plays.)People who are fond of music join a musical section where they are taught to play different instruments. Those who like to dance join a dancing section.People who are interested in sports can join sport sections such as tennis, basket-boll, chess and others. And, of course, all the people use radio or television. They switch on the radio set or TV set and choose the programme they like best of all. People who are interested in sports listen to or watch football and basket-ball matches. Everyone likes to see skating and dancing on the ice.Some people like music. They listen to concerts of modern and old music, new and old songs and see dances. Television helps us to "visit" different lands, see fish and insects, lakes, rivers and seas. We are shown different countries, cities and people who live there. On TV people could even see both sides of the Moon.Radio and television extend our knowledge about the world. All that we can do at home. So I think, that ways in which leisure time can be spent are different and interesting! 

My Favourite Season - AutumnI like autumn very much. The autumn months are: September, October, November.In September summer yields to autumn. The days become shorter and the nights become longer. The sun rays are not so bright and warm. The fruit trees that not long ago bloomed with flowers are heavy with juicy apples and pears. Harvest time is a rush season for farmers. They gather sunflowers and maize, potatoes and cabbage, turnip and cucumbers, carrots and tomatoes. Early autumn is the period of flaming colours, when the landscape is gold and brown. In the daytime the silver gossamer is flying in the air. It’s a sign of the beautiful “Indian Summer”. But unfortunately this period of fine weather is very short and deep autumn follows it.