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2. Thus, we may speak about three major types of complex conditional sentences, or conditionals (Units 3-5):

1) Conditional I: with a real condition and a real consequence expressed by verbs in the Indicative Mood:

If he runs, he will catch the train.

2) Conditional II: with an unreal condition and an unreal consequence in the present or future expressed by verbs in the Past Subjunctive:

If he ran, he would catch the train.

3) Conditional III: with an unreal condition in the past and an unreal consequence expressed by verbs in the Perfect Subjunctive:

If he had run, he would have caught the train.

3. There is also a mixed type of conditional sentences with an unreal condition (Unit 6) where:

a) the condition refers to the past but the consequence refers to the present or future:

If you had taken your medicine yesterday, you would be well today.

b) the condition refers to no particular time and the conesquence refers to the past:

If he were not so absent-minded, he would not have mistaken you for your sister.

Unit 3 Type I Conditionals with Real Condition

Type I Conditionals talk about things which will possibly happen and consider their real consequences for the future.

If I see her, I shall be very glad. Если я увижу её, я буду очень рад.

T ype I Conditionals may have the following structures:

1. The verb in the if-clause is in the Present Indefinite tense; the verb in the main clause is in the Future Indefinite:

if-clause main clause

if + Present Indefinite Future Indefinite (will + Infinitive)

If he works hard he will pass his exams

2. Other structures in the if-clause and in the main clause are possible, depending on what you want to say:

if- clause main clause

if + Present Indefinite modal verb

If you behave yourself, you can come.

if + Present Indefinite to be going to (future)

If you don't work, you're going to fail.

if + Present Indefinite Imperative

If you need anything, ask.

if + Present Continuous will + Infinitive

If we're leaving soon, I'll get on my coat.

if + Present Perfect will + Infinitive

If I've finished, I'll be able to come.

if + Present Perfect modal verb

If you've finished, you can go out

Imperative and/or + will

Eat less, and you will get slim.

3. Alternatives to ‘if’ in conditionals.

So/As long as you promise not to tell, you can come too.

You can drive this car provided/providing (that) you're fully insured.

Suppose/Supposing something goes wrong, what then?

Mario can't come with us, even if he is your best friend.

You can come in on condition that you don't stay long.

Unless Peter changes his attitude, he's going to find himself in trouble.

(Unless you go = If you don't go)

E X E R C I S E S

1. Put the verbs into the correct form.

  1. If I tell you a secret, you (promise) not to tell it to anyone else?

  2. If I lend you $10, when you (repay) me?

  3. If you will kindly sit down, I (make) enquires for you.

  4. The police (arrest) him if they catch him.

  5. Someone (steal) your car if you leave it unlocked.

  6. Unless he (sell) more he won’t get much commission.

  7. If the house (burn) down we can claim compensation.

  8. Unless you are more careful, you (have) an accident.

  9. If a driver brakes suddenly on a wet road he (skid).

  10. If you (not known) the meaning of a word you may use a dictionary.

  11. I’m not expecting any messages you say that I’ll be (ring) while I am out could you say that I’ll be back by 6.00?

  12. If Jack (refuse) to help we’ll have to manage without him.

  13. You can ask for a continental breakfast if you (not want) a full breakfast.

  14. If you (finish) with your dictionary I’d like to borrow it.

2. Put the verbs into the correct tenses.

  1. I’ll look for your notebook and if I (find) it I (give) you a ring.

  2. If you (like) I (get) you a job in this company.

  3. If you (smoke) in a non-smoking compartment the other passengers (object).

  4. I’ll wash the glasses in this nice hot water. – No, don’t. If you (put) them into very hot water they (crack).

  5. I expect it will freeze tonight. – If it (freeze) tonight the roads (be) slippery tomorrow.

  6. He’s only 16 but he wants to leave school at the end of the term. – If he (leave) now he (be) sorry afterwards.

  7. If he (win) he (get) $1,000, if he (come) in second he (get) $500.

  8. If you (give) me your phone number, sir, we (let) you know when it (arrive).

  9. How long ... it ... (take) if you (order) one for me?

  10. If it (not fit), madam, (bring) it back and we (change) it.

  11. If you (wait) a minute, sir, I (see) if the manager (be) free.

  12. I (get) any discount if I (pay) cash?

  13. If you (leave) it with me now, it (not take) more than a couple of days to repair.

  14. If you (not see) what you (want), sir, just (ask) one of the assistants.

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