1. If you don't save some money, you won't be able to buy the house.

2. If you aren't good, your parents will be unhappy.

3. If you don't do it carefully, you will feel sorry afterwards.

4. If you don't keep silent, you will wake the baby up.

5. If you don't drive slowly, you will have an accident.

6. If we don't save water, we won't have fresh water in the future.

7. If you don't water the plants regularly, they will die.

8. If we continue cutting down many trees, we will endanger our oxygen supply.

9. If we dump chemicals into the river, we will swim in them in the future.

`1`. If you don't save some money, you won't be able to buy the house

`2`. If you aren't good, your parents will be unhappy

`3`. If you don't do it carefully, you will feel sorry afterwards

`4`. If you don't keep silent, you will wake the baby up

`5`. If you don't drive slowly, you will have an accident

`6`. If we don't save water, we won't have fresh water in the future

`7`. If you don't water the plants regularly, they will die

`8`. If we continue cutting down many trees, we will endanger our oxygen supply

`9`. If we dump chemicals into the river, we will swim in them in the future

`text{Công thức của mệnh đề If}`

`text{If + S + động từ(thì hiện tại đơn) + O, If + will/won't + Vbare + O}`