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Put the verbs in brackets into the correct form.

1. If I (know) the concentration of impurities in a solution, I would dope them.

2. Unfortunately I forgot your e-mail address when I went on holiday. If (I/have) your e-mail address, (I/send) you a message.

3. If you were me, how you (measure) the height of a potential barrier?

4. If I (have) a chance, I (eliminate) stutter.

5. I’m tired. If (I/not/be) tired, I (do) all measurements.

6. The scientists were not very busy last year. If (they/be) busy, they (not/obtain) so many substances in scientific laboratories.

7. I wouldn’t mind helping you in the laboratory if the results (be) better.

8. I (not/experiment) with this matter if I (be) you.

3. Write a sentence with if … for each situation.

1. The process of determination of the age of rocks is too complex, so I’m not going to do it. I’d … if …

2. I can’t meet you tomorrow. I have to install new equipment in the laboratory. If …

3. I don’t see you very often because I’m designing a new installation. If …

4. We can’t determine the plate current of a triode. We have to measure the temperature of the cathode and the voltage on the plate. If …

5. P-type and N-type regions and a junction between them appeared in a silicon crystal because donor atoms were at one end and acceptor atoms were at the other end of it. If donor atoms …

6. I didn’t determine voltage because I didn’t know strength of the current and resistance. …

7. You didn’t replace parts of this machine – that’s why it doesn’t work now. …

8. Kate didn’t obtain correct result because she didn’t change a sign in a fraction. …

4. Write your own sentences beginning I wish…

1. (somewhere you’d like to be now – in computer laboratory, at the university, in a trip etc.) I wish I …

2. (something you’d like to have – iPad, PSP, iPhone etc.) I wish I …

3. (something you’d like to be able to do – to fix a computer, to drive a car, to program in C++ and Java easily etc.) I wish I …

4. (something you’d like to be – a scientist, a software developer, a system administrator etc.) I wish I …

5 . Write sentences beginning I wish…

1. I don’t have a notebook (and I need it). I wish …

2. I have to install a new computer tomorrow (but I’d like to stay at home). I wish …

3. I can’t obtain perfect results in physics (and I’d like to). I wish …

4. There was a job of specialist in the sphere of computer security advertised in the newspaper. I decided not to apply for it. Now I think I was wrong. I wish …

5. When at school, I didn’t learn to program in C++. Now I regret this. I wish…

6. I’ve bought a lot of hardware to my computer and now I’m short of money. I wish…

6. Put in wish(ed) or hope (d).

1. I … you a good luck at your entrance exams.

2. Enjoy your new creative work. I … you have a great time.

3. Good bye. I’m going on business. I … you all the best.

4. I heard you designed a new device, I … all your dreams come true.

5. I … you luck in buying a new computer. I … it works well for you.

7. What do you say in these situations? Write sentences with I wish … would …

1. You are on business now. You want to fly back home as soon as possible, but there is a delay of trips because of the weather.

You say: I wish it would …

2. You are waiting for results of the experiment. You’re getting impatient.

You say to yourself: I wish …

3. You’re looking through a lot of advertisements in order to find a job. Employers won’t take you.

You say: I wish somebody …

4. You can hear a perforator working. It’s been working for a long time and you’re trying to study.

You say: ….

For the following situations, write sentences with I wish … wouldn’t …

5. You have been doing a monotonous work at your job for years. You think you are worthy of a better fate. You say to yourself: I wish I …

6. Your friend does everything very slowly. You don’t like this. You say to your friend: I wish you …

7. Jack gives his password to all unknown people. This annoys you. You say to Jack: …

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