Conditional Sentence

Conditional Sentences are also known as Conditional Clauses or If Clauses. They are used to express that the action in the main clause (without if) can only take place if a certain condition (in the clause with if) is fulfilled.
General Structure
MAIN CLAUSE + IF CLAUSE

There are three types of Conditional Sentences.

1. conditional sentences type 1 : true in the present or future

S + MODAL V1 + V1 . . IF + S + V1 ATAU TO BE V1

FACT :
Mengubah kata if dengan on condition that, provided, atau unless

contoh :
conditional : I may study in university if i graduate from senior high school
fact : i may study in university on condition that i graduate from senior high school
2. conditional sentences type 2 : untrue in the present

S + MODAL V2 + V2 . . IF + S + V2 ATAU TO BE V2

FACT :
1. Ubah kata if menjadi because
2. Ubah tense menjadi simple present dan hilangkan modal
3. Ubah kalimat negatif menjadi positif dan sebaliknya

contoh :
conditional : I might study in university if i graduated from senior high school
fact : I don't study in university because i don't graduate from senior high school

3. conditional sentences type 3 : untrue in the past

S + MODAL V2 + HAVE + V3 . . IF + S + HAD + V3 ATAU HAD BEEN

FACT :
1. Ubah kata if menjadi because
2. Ubah tense menjadi simple present dan hilangkan modal
3. Ubah kalimat negatif menjadi positif dan sebaliknya

contoh :
conditional : I might have studied in university if i had graduated from senior high school
fact : I didn't study in university because i didn't graduate from senior high school

Referensi:


http://student.eepis-its.edu/~gal/condi1.html