Conditionals
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Transcript of Conditionals
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Conditionals
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Type Tense – if clause
Tense- main
clause
Use
Zero Present Simple/continuous
Present Simple/continuo
us
to talk about common states or events
First Present Simple/continuous
Will/ to be going to/ present simple/ continuous
To talk about possible states or events
Second Past simple/ continuous would + infinitive without to
To talk about a situation which is hypothetical or very unlikely to happen
Third Past perfect would have + past participle
To talk about the past and say that now it is impossible to do anything about it
If / when water boils, it changes into steam.
If he hurries, he will be in time.
If I were a bird, I would be very happy.
If I had lot of money, I would go abroad.
If I had seen her last year, I would have married her.
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Summary
If-clause Main clause Present Simple Future simple
Past Simple Future in the past
Past Perfect Future Perfect in the past
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Inversion
1st Type
If the weather is too bad, we won’t go for a picnic.
Should the weather be too bad, we won’t go for a picnic.
Should
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Inversion
1st Type
If you see Kimtan, tell him I want to visit.
Should you see Kimtan, tell him I want to visit.
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Inversion
1st Type
If you find it, please send it to me.
Should you find it, please send it to me.
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Inversion
2nd Type
If they went, I would give them money.
Were they to go, I would give them money.
If they were to go, I would give them money.
were
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Inversion
If it weren’t so late, she would telephone me.
Were it not so late, she would telephone me.
2nd Type
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Inversion
If they were here, they would tell me.
Were they here, they would tell me.
2nd Type
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Inversion
If I had known her address, I would have visited her.
Had I known her address, I would have visited her.
3rd Type
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Inversion
Had he had much money, he would have bought a new car.
If he had had much money, he would have bought a new car.
3rd Type
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Other conditionals
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1st Type
If + s.+ will +, s. + will + v.inf
If you will come this way, the manager will see you now.
Polite request
Please come this way
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1st Type
If + s.+ would +, s. + will + v.inf
If you would take a seat, the doctor will see you in 5 minutes.
More polite request
If you wouldn’t mind taking a seat
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1st Type
To talk about future result
Example: If it will save our marriage, I’ll try to give up drinking.
If + s.+ will +, s. + will + v.inf
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1st Type
‘Insist on’
Example: If you will smoke twenty a day, it is not surprising you have a hacking cough.
If you insist on smoking so much,
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1st Type
If + s.+ should + v.inf , imperative
Example: If you should change your mind about coming to the beach tomorrow, give me a ring.
I don’t really expect
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2nd Type
1.) If + s.+ were to + infinitive
If you passed the exam, he would be astonished.
If you were to pass the exam, he would be astonished.
imaginary future situations
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2nd Type
2.) If + s.+ were not for, would +v.inf
If it were not for his bad hand, he would carry it himself.
= but for + n., would + v.inf
If he didn’t have a bad hand, he would carry it himself.
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2nd Type
3.) If + s.+ would, would +v.inf
If you would stop singing, I would be able to study.
I would be very grateful if you would pay your bill.
แสดงความรำาคาญในการำถู�กรำบกวน
polite request
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3rd Type
If + s + hadn’t been for + n, s + would have + v.3
If it hadn’t been for the storm, we should have arrived earlier.
If he hadn’t been for his laziness, he could have been rich.
We can use was/were not for or had not been for to say that one situation is dependent on another situation or person.
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If-equivalent
Unless = if… not (= except when) …ถู�า .. ไม�, เว�นแต่� , นอกจาก
You will fail unless you work harder.
You will fail if you do not work harder.
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If-equivalent
If there is no rain, the flowers will die.
Unless there is some rain, the flower will die.
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If-equivalent
Even if I had no money, I wouldn’t borrow any from my friends.
Marry never hurries even if she is very late.
Even if = แม�ว�า, เช่�น
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If-equivalent
Suppose (that) สมมต่�ว�า
Supposing (that) สมมต่�ว�า
Providing (that) ในกรำณี�ที่��
Provided (that) ในกรำณี�ที่��
So long as ต่รำาบเที่�าที่��, หากแม�ว�า
On condition (that) ในกรำณี�ที่��
In case ในกรำณี�ที่��
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If-equivalent
You may take two days off on condition that you work on the
weekend.
Supposing you lost your job, what would you do?
You can stay with us as long as you share the expenses.
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Exercise Rewrite the following sentences so
that the second sentence has a similar meaning to the first. Begin
with the word (s) given.
1. The reason why the dog attacked them was because they hit it with a stick.
If they had not hit the dog with a stick, it would not have attacked them.
If
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2. I would have visited you if I had known that you were in the hospital
last week.
Had I known that you were in the hospital last week, I would have visited you.
3. You can borrow my bike, but you must promise to take good care of it.
As long as you promise to take good care of my bike, you can borrow it.
Had
As long as
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Were the weather not so cold today, we would spend the day outside.
5. If you don’t know what you’re talking about, you had better keep quiet.
Unless you know what you’re talking about, you had better keep quiet.
4. If the weather weren’t so cold today, we would spend the day
outside. Were
Unless
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Should you not follow your doctor’s instructions, you may face unpleasant
side effects.
7. If you don’t change your attitude , I’ll stop being friends with you.
Unless you change your attitude, I’ll stop being friends with you.
6. You may face unpleasant side effects if you don’t follow your doctor’s instructions. Should
Unless
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If you had thought about your decision carefully, you would not be
regretting it now.
9. She must do her homework, otherwise her parents won’t let her go to the party.
On condition that she does her homework, her parents will let her go to the party.
8. You don’t think about your decision carefully, and now you’re regretting it. If
On condition that