Conditional Sentences

S + will/may + V₁ + if + S + V₁
eg :  

He will help her, if she needs him
If you invite me, i may come

possible to happen

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S + would + V₁ + if + S + V₂
eg :  

If I were rich, I would live in a big house

impossible to happen at present
contrary to present

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S + would + have + V₃ + if + S + had + V₃
eg :  

If you had invite me, I would have come

contrary to the past situation

Causative Clause

S + have + O + V₁
S + tobe + have-ing + O + V₁
eg :  

I have someone water the flower
I am having someone repair my car

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S + get + O + to + V₁
S + tobe + getting + O + to + V₁
eg :  

I get someone to water the flower
I am getting someone to repair my car

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S + have / get + O + V₃
eg :  

I have the flower watered
I get the flower watered

Past Future Tense

Rumus Past Future Tense

	Active	Passive
Positif :	S + would + V1
Negatif :	S + would + not + V1
Tanya :	Would + S + V1

Rumus Past Future Continuous Tense

	Active	Passive
Positif :	S + would + be + Ving
Negatif :	S + would + not + be + Ving
Tanya :	Would + S + be + Ving

Rumus Past Future Prefect Tense

	Active	Passive
Positif :	S + would + have + V3
Negatif :	S + would + not + have + V3
Tanya :	Would + S + have + V3

Rumus Past Future Perfect Continuous Tense

	Active	Passive
Positif :	S + would + have + been + Ving
Negatif :	S + would + not + have + been + Ving
Tanya :	Would + S + have + been + Ving