1. If you mix red and blue, you get purple. $( 0 )$

2. If Arsenal wins, they'll be at the top of the league. $(I)$

3. If it rains, we will cancel the match. $(I)$

4. If you take the first bus, you'll get there on time. $(I)$

5. If you need more helpers, I can try to get some time off work. $(I)$

6. Mary might deliver your parcel if you asked her. $(II)$

7. If I were 20, I would travel around the world. $(II)$

8. If Jim lent us his car, we could go to the party. $(II)$

9. We would save £3. 50 a day if we didn't eat any lunch. $(II)$

10. If burglars broke into my house, they wouldn't find any money. $(II)$

11. Would you be very angry if I failed my exam? $(II)$

12. If I were you, I'd phone her straight away. $(II)$

13. If you really loved me, you would buy me a diamond ring. $(II)$

14. If I knew where she lived, I would go and see her. $(II)$

15. If you went to bed earlier you wouldn't be tired. $(II)$

*Cấu trúc:

- Câu điều kiện loại $0$: If + S + V (s/es), S + V (s/es).

  + Chỉ sự thật hiển nhiên, luôn luôn xảy ra.

- Câu điều kiện loại $1$: If + S + V (s/es), S + will + V.

  + Nói về một hành động có thể xảy ra ở hiện tại.

- Câu điều kiện loại $2$: If + S + V (-ed/ bất quy tắc), S + would/ could/ might + V (bare).

  + Nói về một hành động không thể xảy ra ở hiện tại, không có thật.