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7/29/2019 CS 123
http://slidepdf.com/reader/full/cs-123 1/16
Conditional SentencesType I, II & III
By :
Arnold Panjaitan
Dessy NataliaM. Nuim
7/29/2019 CS 123
http://slidepdf.com/reader/full/cs-123 2/16
Conditional Sentences
Structure :
A conditional sentence is composed of 2 parts :
If-clause + Main Clause
Example :
If it rains tomorrow, we will not come.
If-clause Main Clause
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Conditional Sentences Type 1
Probability : It is PossibleThere is possibilityPerhaps
Fact : Probability + Main Clause (In Present Tense)
Use : Talk about a present or future probable case.
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Conditional Sentences Type 1
Habitual
Tense :If-clause ~ Present TenseMain Clause ~ Present Tense
Example :
If Arnold feels hungry, He goes to Zam Zam Resto.
Present Tense Present Tense
Fact : It is possible Arnold goes to Zam Zam Resto
7/29/2019 CS 123
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Conditional Sentences Type 1
Future Conditional
Tense : If-clause ~ Present TenseMain Clause ~ Future Tense
Example :
If it rains tomorrow, Nuim won’t go to school.
Present Tense Future Tense
Fact : There is possibility Nuim doesn’t go to school
7/29/2019 CS 123
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Conditional Sentences Type 1
Command Form
Tense : If-clause ~ Present TenseMain Clause ~ Command Form
Example :
If you go to Indomaret, buy a bottle of Star Beer.
Present Tense Command Form
Fact : It is possible for you to buy a bottle of Star Beer.
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Exercise One
1. If you ___________________ (not come),
You ________________ (miss ) the show.
do not come
will miss
2. John __________________ (buy)a car if he
_____________ (get)a job.
will buy
gets
3. Mary ________________(get) a toothache if
she_________________ (eat) too many sweets.
will get
eats
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Conditional Sentences Type 2
Type 2
Use : Talk about a present or future improbable
case. (A case that is unlikely to happen)Tense : If-clause ~ Past Tense
Main Clause ~ would/could/might + an infinitive(Past Future)
Fact : Contrary to the Sentences (In Present Tense) (+)V2 don’t/doesn’t + V 1(-)didn’t + V1 V 1 (s,es)(+)were is,am,are + not
(-)weren’t is/am/are
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Conditional Sentences Type 2
Type 2
Example :
If Dessy were a bird, she would fly across the harbour.
Past Tense Past Future
Fact : Dessy isn’t a bird, so she can’t fly
7/29/2019 CS 123
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Conditional Sentences Type 3
Type 3
Fact : Contrary to the Sentences (In Past Tense)
(+)Had + V3 didn’t + V 1(-)Hadn’t + V3 V 2(+)Had Been Was/Were+ not
(-)Hadn’t Been Was/Were
Use : Talk about a past, impossible caseTense : If-clause ~ Past Perfect Tense
Main Clause ~ Would + Past Future PerfectForm
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Conditional Sentences
Type 3
Example :
If Nuim had had enough money, he would have gone toManchester yesterday.
Past Perfect Tense Past Future Perfect Form
Fact : Nuim didn’t have enough money, so he didn’t go to
Manchester
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Conditional Sentences
Variations:
Type 1 :
If you see John, ask him to come and see me.Should you see John, ask him to come and see me.
SHOULD may replaceIF in type 1 inversion
Type 2 :
If I were an aeroplane, I could fly in the sky.
Were I an aeroplane, I could fly in the sky.
can replace with COULDor MIGHT or WOULD
WERE may replace IF in an inversion
7/29/2019 CS 123
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Conditional Sentences
Type 3 :
If I had come home earlier, I would not havemissed the programme.
Had I come home earlier, I would not have missedthe programme.
HAD may replace IF in aninversion
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Exercise Two
1. If I ________________ (be) four years old, I
________________ (learn) to play the piano.
were
would learn
2. If I ________________ (not fail) in the
examination, my mother_______________ (buy)
me a new computer.
had not failed
would have bought
3. We ________________________ (finish) if we
________________ (have) better preparation.
would have finished
had had