- Giả định có thể xảy ra ở hiện tại hoặc tương lai -> ĐK loại 1: If+S+V(e/es), S+will+V

- Giả định không có thật ở hiện tại -> Đk loại 2: If+S+Vqk, S+would/could...+V

- Giả định không có thật ở quá khứ -> ĐK loại 3: If+S+had+Vp2, S+would have+Vp2

1. touch - will get

2. will have

3. looked

4. had fed

5. would understand

6. listen

1. If you (touch) a fire, you (get) burned.

=> If you touch a fire, you will get burned 

2. If we meet at 9:30, we (have) plenty of time.

=> If we meet at 9:30, we will have plenty of time.

3. Mary would find the milk if she (look) in the fridge.

=> Mary would find the milk if she looks in the fridge.

4. The zookeeper would have punished her with fine if she (feed) the animals.

=> The zookeeper would have punished her with a fine if she (feed) had fed the animals.

5. If you spoke louder, your classmates (understand) you.

=> If you spoke louder, your classmates (understand) would understand you.

6. If they (listen) carefully, they might hear the woodpecker

=> If they (listen) listened carefully, they might hear the woodpecker.

-> Tất cả các câu trên đều áp dụng công thức: If + S + V1, S + will Vo ( và ngược lại )

Chúc bạn học tốt !!!