When (I exercise / I've done). Условные предложения с when и if

A

Изучите следующую ситуацию:

Предложение 'I'll phone you when I get dwelling' состоит из двух частей:


и

главная часть:
часть с when :

'I'll telephone you'
'when I get home'

Время в предложении - будущее ('tomorrow'), но мы используем настоящее время (I get) в части предложения с when.

Мы не используем volition в части предложения с when.

Еще немного примеров:

  • We'll go out when it stops raining. (non when information technology volition stop)
  • When you lot are in London over again, come up and see us. (not When yous will be)
  • (said to a child) What do you want to be when you abound up? (not will abound)

То же самое происходит и после while / before / after / as soon equally / until или till:

  • I'g going to read a lot while I'yard on holiday. (not while I will be)
  • I'll probably become dorsum home on Sunday. Earlier I go, I'd similar to visit the museum.
  • Look here until (or till) I come up back.

B

Вы также можете использовать present perfect (have done) после when / after / until / every bit presently as:

  • Can I borrow that volume when y'all've finished with information technology?
  • Don't say anything while Ian is here. Wait until he has gone.

Если вы используете present perfect, одно действие должно быть завершено перед другим (так, что два действия не происходят в одно и то же время):

  • When I've phoned Kate, nosotros tin accept dinner.
    (= Сначала я позвоню Кате, и только потом мы можем начать обедать.)

Не используйте present perfect, если два действия происходят в одно и то же время:

  • When I telephone Kate, I'll ask her about the party. (not When I've phoned)

Часто можно использовать как nowadays simple, так и present perfect:

I'll come equally soon as I finish.

I'll come as soon as I've finished.

You'll feel better after you have something to eat.

You'll feel improve after you've had something to swallow.

C

После if, для будущего мы обычно используем nowadays simple (if I do / if I see и др.):

  • Information technology's raining hard. We'll get wet if nosotros go out. (non if we will become)
  • I'll be angry if information technology happens once more. (not if information technology will happen)
  • Hurry upwardly! If nosotros don't hurry, nosotros'll be tardily.

D

Сравните when и if:

Мы используем when, говоря о чем-то, что несомненно случится:

  • I'1000 going shopping later. (for sure)When I go shopping, I'll buy some food.

Мы используем if (не when), говоря о том, что возможно случится:

  • I might go shopping later. (it's possible)If I become shopping, I'll buy some nutrient.
  • If it is raining this evening, I won't go out. (not When it is raining)
  • Don't worry if I'm late this evening. (not when I'grand late)
  • If they don't come up soon, I'm not going to wait. (not When they don't come up)

Упражнения

1. Закончите предложения, используя глаголы в скобках. Все предложения о будущем. Используйте will/won't или present simple (I see / he plays / it is и др.).

  1. I (phone) you when I (become) home from work.
  2. I want to run into Julia before she (go) out.
  3. We're going on vacation tomorrow. I (tell) yous all about it when we (come) dorsum.
  4. Brian looks very unlike now. When you (run into) him again, you (not / recognise) him.
  5. (you / be) lonely without me while I (be) away?
  6. Nosotros must do something soon before it (be) also late.
  7. I don't want to go without y'all. I (wait) until yous (exist) set up.
  8. Sue has applied for the job, simply she isn't very well-qualified for it. I (be) surprised if she (get) information technology.
  9. I hope to play lawn tennis tomorrow if the weather (exist) overnice.
  10. I'm going out now. If anybody (phone) while I (exist) out, tin can you lot have a message?

Key

two. Сделайте одно предложение из двух.

  1. Information technology volition terminate raining soon. And so we'll go out.
  2. I'll find somewhere to live. And then I'll give you my address.
  3. I'll do the shopping. Then I'll come direct back habitation.
  4. It's going to get dark. Let'south go abode earlier that.
  5. She must apologise to me first. I won't speak to her until then.

Key

three. Прочитайте ситуации и закончите предложения.

  1. A friend of yours is going on holiday. You want to know what she is going to do.
    You ask: What are you going to do when ?
  2. A friend of yours is visiting you. She has to get presently but maybe in that location's fourth dimension for some more coffee.
    You lot ask: Would yous like some more coffee before ?
  3. You want to sell your car. Jim is interested in buying it, just he hasn't decided nonetheless.
    You ask: Tin can yous let me know as shortly as ?
  4. Your friends are going to New York shortly. You want to know where they're going to stay.
    You ask: Where are you lot going to stay when ?
  5. The traffic is very bad in your boondocks, but they are edifice a new road at the moment.
    Yous say: I think things will exist better when they .

Key

4. Выберите when или if.

Key

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