Rumus umumnya 
- if+condition,consequence 
Atau
 - consequence+if+condition Tipe-tipe conditional sentence
 1. Tipe A
 *if+simple present,simple present* 
*simple present+if+simple present* 
Contoh kalimat : 
- if it rains, the grass gets wet
 - the grass gets wet if it rains 
2. Tipe B
 *if+simple present,present future (will)*
 *present future+if+simple present* 
Contoh kalimat:
 - if you tell her the truth, she will forgive you
 - if you win the lottery, i will take you to Bali
 3. Tipe C
 *if+past tense,past future*
 *past future+if+past tense* 
Contoh kalimat
 - if i became the President of this country, i would pay more attention to teacher's prosperity 
4. Tipe D 
*if+past perfect, future perfect* 
*future perfect+if+past perfect* 
Contoh klimat 
- if i had studied harder, i would have gotten a better job. 
 Mohon koreksinya pak, 
 Maaf kalo salah
 terimakasih