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Note 3: We use “in case” to talk about precautions – things we do to be ready for what might happen. After “in case” we use a present tense to talk about the future.

e.g. I’ve bought a chicken in case your mother stays to lunch.

“In case” is not the same as “if”. Compare:

I'll buy a bottle of wine (now) in case Roger comes (later). I'll buy a bottle of wine (later) if Roger comes (and if he doesn't come I won't).

1.8 If or in case?

1. I'm taking my umbrella with me _____ it rains.

2. I'll open the umbrella _____ it rains.

3. People phone the fire brigade _____ their houses catch fire.

4. People insure their houses _____ they catch fire.

5. We have a burglar alarm _____ somebody tries to break in.

6. The burglar alarm will go off _____ somebody tries to break in.

7. I'll let you know _____ I need help.

8. I'll take the mobile phone _____ I need to phone you.

NOTE 4: We can use “should” in the if-clause when we are less sure about the possibility – problematic condition: e.g. If I should meet her, I’ll ask her. (I may meet her, but I doubt it.)

2. Type Two

The sentences of this type express improbable situations in the present or future (UNREAL PRESENT). It is also used to give advice.

Main clause

If-clause

WOULD / COULD / MIGHT + bare infinitive

Past Simple or Past Continuous

If I saw a ghost, I would run away. (not likely to happen)

If I were you, I wouldn’t go out with him. (advice)

NOTE 1: “were” is used instead of “was” in all persons.

NOTE 2: We can omit "if". When we omit "if" should, were and had (Past Perfect) come before the subject.

e.g. If he should turn up, tell him to wait for me. → Should he turn up, tell him to wait for me.

If I were you, I would speak to her. → Were I you, I would speak to her.

If he had known, he would have told us. → Had he known, he would have told us.

2.1 What would you do in each situation? Write unreal present conditionals, use the ideas below:

Call an ambulance, complain to the manager, run away, try to catch it, walk to the nearest garage to get some, ring the police

1. You find a fly in your soup.

2. You see a burglar breaking into your house.

3. You see a mouse in your kitchen.

4. Your car runs out of petrol.

5. You see an accident.

6. You see a ghost in your room.

2.2 Put in the correct verb forms:

1. The kitchen _____ (look) better if we _____ (have) red curtains.

2. I _____ (be) sorry if we _____ (not see) her again.

3. It _____ (be) a pity if Andy ______ (not get) the job.

4. If I _____ (know) his address, I _____ (go) round and see him.

5. What _____ (you do) if you _____ (win) the lottery?

6. It _____ (be) quicker if you _____ (use) a computer.

7. If you _____ (not be) so busy, I _____ (show) you how to play.

8. If we _____ (have) some eggs, I _____ (make) you a cake.

9. If you really _____ (love) me, you _____ (buy) me those diamonds.

10. I'm sure Moira _____ (help) you if you _____ (ask) her.

3. Type Three

The sentences of this type express unreal or improbable situations in the past (UNREAL PAST). It is also used to express regrets and criticism.

Main clause

If-clause

WOULD / COULD / MIGHT + have + past participle

Past Perfect or Past Perfect Continuous

e.g. If I had locked the car, it wouldn’t have been stolen. (regret; it is a pity I did not lock it.)

e.g. If he had behaved well, the teacher wouldn’t have punished him. (criticism)

3.1 Put the verbs in brackets into the correct tense:

If John 1 ____ (oversleep), he 2 ____ (not / be) late for work. If he 3 ____ (not /be) late for work, his boss 4 ____ (not / fire) him. If John 5 ____ (not / lose) his job, he 6 ____ (not / need) money and he 7 ____ (not / rob) the bank. If he 8 ____ (not / rob) the bank, the police 9 ____ (not / arrest) him.

3.2 Match the parts of the sentences:

1. If I hadn’t missed the bus,

2. If she hadn’t fell ill this morning,

3. If the food hadn’t been awful,

4. If he had passed his exams,

5. If the salary had been good,

6. If it hadn’t been my birthday,

a) he would have gone to university.

b) Chris wouldn’t have given me.

c) she would have gone to school.

d) I would have accepted the job.

e) I wouldn’t have been late for work.

f) we would have eaten it.

3.3 Put in the correct verb forms:

1. If I _____ (know) you were coming, I ________ (invite) some friends in.

2. He ___________ (go) to university if his father __________ (not be) ill.

3. If you _____ (say) you weren't hungry, I __________ (not cook) such a big meal.

4. The team __________ (win) if Jones __________ (play) better.

5. If they _______ (not cut) off the electricity, I _______ (finish) my work.

6. If Bell _____ (not invent) the telephone, somebody else __________ (do) it.

7. If you _____ (not spend) so much time making up, we __________(not be) late.

8. The burglars __________ (not get) in if you _____(remember) to lock the door.

9. If he ______ (not be) a film star, he __________ (not become) President.

10. If she __________ (have) more sense, she __________ (sell) her car years ago.