According to Marcella Frank the conditional sentences are divided into three; a. Real conditions are conditions that are possible to be realized. They often
refer to one event in the future., b. Real conditions may be used in general statements about repeated events, c. Such Conditions are either impossible to
realize or are not likely to be realized in the near future.
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2. Types of conditional sentences
The types of conditional sentences are :
Type I Table 2.1
Form and Example of Future Possible
Result Clause If Clause
Simple Future Simple Present S + will + V1 + OAC
S + V1 + OAC I will go to school.
I write to my parents every week. Simple Present
If + S V1 + OAC
If it does not rain. If I have enough time.
IF Clause Result Clause
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Frank, Marcella, Modern English: exercises for non-native speakers. Englewood Cliff-New Jersey 1972, p. 31.
Simple Present If + S V1 + OAC
If it does not rain. If I have enough time.
Simple Future Simple Present S + will + V1 + OAC
S + V1 + OAC I will go to school.
I write to my parents every week.
Type II Table 2.2
Form and Example of Present Unreal
Result Clause If Clause
Would + simple form S + would + V1 + OAC
I would go to school. I would write to my parents.
Simple Past If + S + V2 + OAC
If it did not rain. If I had enough time now.
IF Clause Result Clause
Simple Past If + S + V2 + OAC
If it did not rain. If I had enough time now.
Would + simple form S + would + V1 + OAC
I would go to school. I would write to my parents.
Type III Table 2.3
Form and Example of Past Unreal
Result Clause If Clause
Would + have + V3 S + would + have + V3
I would have gone to school. I would have written to my parents
yesterday. Past Perfect
If + S + V3 + OA If it had not rained.
If I had had enough time now.
IF Clause Result Clause
Past Perfect If + S + V3 + OA
If it had not rained. If I had had enough time now.
Would + have + V3 S + would + have + V3
I would have gone to school. I would have written to my parents
yesterday.
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3. Forms of Conditional Sentences
Conditional sentences is formed by the use of the present simple in the if clause followed by a comma the present simple in the result clause. You can also put the result
clause first without using a comma between the clauses. Example : If he comes to town, we have dinner.
OR We have dinner if he comes to town.
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Hartono, Rudi, Belajar cepat Bahasa Inggris. Cileungsi-Bogor, 2003. p.107