If | + | Past Simple | + | Future in the Past | |||
I/we/you/they he/she/it | introduced /installed/lost | I/we/you/they he/she/it | would | part/conclude /note | |||
THE P-N JUNCTION |
Language Work
(II) If-clause (If I determined …, it would occur …)
or
Future in the Past | + | if | + | Past Simple | |||
I/we/you/they he/she/it | would | part/conclude /note | I/we/you/they he/she/it | introduced /installed/last | |||
For example:
If I doped donor atoms at one end and acceptor atoms at the other end of a silicon crystal, it would have both P-type and N-type regions and there would be a junction between them.
If free electrons and holes moved in a controlled manner, they wouldn’t wander freely in the lattice.
I wish I determined…
wish + Past
For example:
I wish I knew these parameters.
(=I don’t know them)
I wish I could gain higher results. (I can’t)
Remember:
If I were/if I was
I wish it were/I wish it was
For example:
If I were you, I would correct this test. / If I was you, …
I wish it were / was possible.
(III) If-clause (If I had designed …, they would have set up …)
If | + | Past Perfect | + | Future Perfect in the Past | |||
I/we/you/they he/she/it | had introduced/ had installed/ had lost | I/we/you/they he/she/it | would | have parted/ have concluded/ have noted | |||
or
Future Perfect in the Past | + | if | + | Past Perfect | |||
I/we/you/they he/she/it | would | have parted/ have concluded/ have noted | I/we/you/they he/she/it | had introduced/ had installed/ had lost | |||
For example:
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If I had determined a fault, I would have corrected it. (but I didn’t determine it)
If one region had lost a positive charge, the other region would have gained it. (but it didn’t lose a positive charge)
I wish I had designed…
wish + Past Perfect
For example:
I wish I had constructed my replica. I would have used it yesterday. (but I didn’t construct it)
I wish I had corrected some measurements in my laboratory work. I would have obtained a higher result. (but I didn’t correct them)
Wish
1. Wish somebody something, but hope somebody do something.
For example:
I wish you an easy test.
I hope you get perfect results in your mathematical test.
2. Wish + Past (We regret something. The meaning is present.)
For example:
I wish you didn’t reach critical values. (you reach them)
Mike’s going to overcome all difficulties. I wish I was going to do it too.
Wish + Past Perfect (we regret about something in the past)
For example:
I wish I had simulated this object with the help of a new computer. (I didn’t simulate)
I wish I hadn’t replaced parts in the machine. (I replaced)
3. I wish I could (do something) = I regret that I cannot do it.
For example:
I’m sorry I can’t help you. I wish I could calculate the resistance in this task. (but I can’t)
I wish I could have (done something) = I regret that I could not do it.
For example:
I heard you bought a new computer. I wish I could have gone to look at it. (but I couldn’t go)
4. I wish (somebody) would (do something)
(we would like something to happen)
For example:
I wish my computer would outstrip my friends’ ones.
I wish somebody would help me to measure current in my laboratory work.
1. Fill in the table.
Noun | Verb | Adjective | Adverb | Translation | Transcription |
determination | determine | determinate determinative | - | определение | [dI‚tq:mI′neISqn] |
diffusion | диффузия | [dI′fju:Zqn] | |||
dope | добавлять | ||||
eliminate | |||||
gain | [geIn] | ||||
height | |||||
junction | переход, соединение | ||||
measure | [′mqZq] | ||||
plane | плоскость | ||||
region | область, зона | ||||
знак | |||||
value | величина, значение |
2. Put the verbs in brackets into the correct form.
1. If I (know) the concentration of impurities in the solution, I would dope it.
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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) a high density area.
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 rock age determination 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 current strength 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 a computer laboratory, at the university, on a tour 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 at the office 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 in N.Y. on business now. You want to fly back home as soon as possible, but there is a flight delay because of the weather.
You say: I wish the weather 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 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 unknown people. This annoys you. You say to Jack: …