Câu điều kiện 0:

If + S + V(s,es), S+ V(s,es)

Câu điều kiện 2:

If + S + V2/ Ved, S +would/ Could/ Should…+ V

If + QKĐ,  HTĐ/HTTD

If this thing happened that thing would happen.

To be: were / weren't

Câu điều kiện 3:

If + S + Had + V(pp)/Ved, S + would/ could…+ have + V(pp)/Ved

- Câu điều kiện loại 0

-> If + S + Vs/es + S + Ves/s.

Ex: If you throw the rock into the water, it sinks.

- Câu điều kiện loại I

-> If + S + Vs/es, S + will + Vinf.

Ex: If he studies hard, he will pass the exam.

- Câu điều kiện loại II

-> If + S + V2/ed, S + would + Vinf.

Ex: If he had lot of money, he would buy a car.

- Câu điều kiện loại III

->If + S + have/has + V3, S + would + have + V3.

Ex: I had saved enough money, I would have bought a new house.