1. If you turn off the lights, you will not pay more money.

2. If she doesn't wear warm clothes, she will have a cold.

3. If you aren't careful, you may have an accident.

4. If you don't phone your parents, you will have a trouble.

5. If she doesn't whisper, everyone will know what she is saying.

6. If you stay here, you will feel save.

7. If you don't pay electricity bill today, your electricity will be cut off.

8. If you don't stop smoking, your cough may be worse.

9. If we don't use less fossil fuel, they will be run out soon.

10. If it doesn't stop raining today, we may be faced with a serious flood.

11. If you do morning exercises regularly, your body will be fitter.

12. If we don't use renewable energy, we will have nothing for the future generation.

13. If we don't reduce the use of non-renewable, the climate will change.

14. If you lock all the doors, no one can break into your house.

15. If we don't continue hunting polar bears, they will become extinct in near future.

------------------------

`-` Câu điều kiện loại 1:

If + S + V/V (s/es), S + will/can/may + V-inf

`-` Mệnh đề If viết ở THTĐ, mệnh đề chính viết ở TTLĐ

`***` Câu điều kiện loại `1`:

If + S + V (s/es), S + will/can/may + V-inf

`->` Diễn tả một điều có thể diễn ra ở hiện tại hoặc tương lai

`->` Viết lại câu thành CĐK loại 1 nếu câu ngữ cảnh ở thì TLĐ (Form: S + will + V-inf)

`-` Mệnh đề If viết ở thì HTĐ, mệnh đề chính viết ở thì TLĐ

`----------`

`1.` If you turn off the lights, you will not pay more money.

`2.` If she doesn't wear warm clothes, she will have a cold.

`-` Unless `=` If not

`3.` If you aren't careful, you may have an accident.

`4.` If you don't phone your parents, you will have a trouble.

`5.` If she doesn't whisper, everyone will know what she is saying.

`6.` If you stay here, you will feel save.

`7.` If you don't pay electricity bill today, your electricity will be cut off.

`8.` If you don't stop smoking, your cough may be worse.

`9.` If we don't use less fossil fuel, they will be run out soon.

`10.` If it doesn't stop raining today, we may be faced with a serious flood.

`11.` If you do morning exercises regularly, your body will be fitter.

`12.` If we don't use renewable energy, we will have nothing for the future generation.

`13.` If we don't reduce the use of non-renewable, the climate will change.

`14.` If you lock all the doors, no one can break into your house.

`15.` If we don't continue hunting polar bears, they will become extinct in near future.