1. Match the sentences (1-3) to their uses (a-c). Then say which type of conditional each one is.

(Nối các câu (1-3) với các cách dùng (a-c). Sau đó nói xem mỗi câu thuộc loại câu điều kiện nào.)

1. ___ If I were you, I would switch from the petrol car to an electric one.

2. ___ If we used LED light bulbs, our electric bills wouldn't be that high.

3. ___ If I have free time this weekend, I will go to the green energy club with you.

a. real situations that are likely to happen in the present/future

b. unreal or imaginary situations in the present/ future

c. giving advice

2. Choose the correct option.

(Chọn đáp án đúng.)

1. We _____ fewer greenhouse gases if we weren't so reliant on fossil fuels for transport.

A. will produce               B. produced      C. produce        D. would produce

2. If we _____ less fossil fuel, we would create fewer emissions.

A. use                  B. used                C. will use          D. would use

3. I will attend the green energy seminar this weekend if I _____ time.

A. had                 B. have                C. will have       D. would have

4. _____ fewer environmental pollutants if everyone used hydroelectric power?

A. Would there be                        B. Were there

C. Will there be                             D. Are there

5. We _____ our dependence on imported fuels unless we use alternative energy sources.

A. wouldn't reduce                      B. won't reduce

C. don't reduce                                            D. didn't reduce

6. We would have some wind turbines here in my village if they _____ so much maintenance.

A. don't require                                           B. won't require             

C. didn't require                           D. wouldn't require

7. If _____, I would install solar panels on the roof of my home.

A. I were you                                 B. I will be you

C. I weren't you                            D. I would be you

3. Choose the option (A, B, C or D) to indicate the underlined part that needs correction.

(Chọn đáp án A, B, C hoặc D để chỉ ra phần gạch chân cần sửa lại cho đúng.)

1. We will (A) have (B) more wind turbines now if (C) they weren't so (D) expensive.

2. If (A) Mandy would be (B) prime minister next year, she would invest (C) more money in (D) tidal energy.

3. She will cycle (A) to her (B) office tomorrow unless (C) it rained (D).

4. It we will start (A) a carpool next month (B), we will be able to (C) reduce our (D) carbon footprint.

5. Unless (A) we don't invest (B) in green energy sources, we will continue (C) to rely on (D) non-renewable sources.

4. Rewrite the sentences for each situation, using conditional type 1 or 2. Write in your notebook.

1. People don't want to use fossil fuels because they create emissions.

If fossil fuels didn't create emissions, people would use them./People would use fossil fuels if they didn't create emissions.

2. Susan is ill now, so she won't attend the seminar on green energy tonight.

3. I have to work on my project on geothermal power, so I won't come to your house

4. This motorbike uses petrol, so we won't buy it.

5. Fiona wants to buy an electric bike, but she needs to save enough money first.

5. Complete the sentences using conditional type 1 or 2. Make them true for you. Tell your partner.

(Hoàn thành các câu sau sử dụng câu điều kiện loại 1 hoặc 2. Viết nó đúng với bạn. Nói với bạn cùng bàn của bạn.)

1. If I have time today, _____.

2. If I lived closer to my school, _____.

3. If I were a leader of my country, _____.

4. If I ____________________________. 

5. If _____________________________.

6. Put the verbs in brackets into the correct forms of conditional type 3. 

(Điền dạng đúng của động từ trong ngoặc theo câu điều kiện loại 3.)

1. Jason would have come to the talk on geothermal energy if we _____ (tell) him about our plans. 

2. If  I had known that product was bad for the environment, I _____ (not/choose) it. 

3. If they _____ (switch) to using wind energy earlier, they would have saved a lot of money. 

4. We _____ (not/buy) this car if we had realised that it could produce lots of pollution. 

5. Ann would have purchased solar panels for her home if she _____ (be) able to afford them. 

6. I _____ (not/know) about how biomass energy works if I hadn't watched the video. 

7. Rewrite the sentences for each situation using conditional type 3. Write in your notebook. 

(Viết lại các câu sau cho mỗi tình huống dùng câu điều kiện loại 3. Viết vào vở bài tập.)

1. I didn't know the lights were on and that's why I didn't turn them off.

2. They used so much electricity and that's why their bill was so high. 

3. Maria went to the conference on hydroelectric power late because she forgot to check the timetable. 

4. We learnt that the car wasn't solar-powered, so we didn't buy it. 

5. I stopped using coal to heat my home last year, and it has become eco-friendly since then.

8. Choose the correct option.

(Chọn đáp án đúng.) 

1. If I had known about the importance of green energy, I _____ it from the start. 

A. will support                                            B. would support          

C. would have supported                          D. supported 

2. If I were elected to the city council, I _____ a push for more sustainable energy initiatives. 

A. will make                                                 B. would make 

C. would have made                                   D. made 

3. If we don't take steps to address climate change, we _____ the consequences soon. 

A. had faced                                                 B. would face 

C. would have faced                                   D. will face 

4. If we continue to use fossil fuels we _____ our planet. 

A. would have damaged                            B. damaged 

C. would damage                                        D. will damage 

5. Unless we _____ energy, the energy crisis will become worse. 

A. conserve                                                   B. don't conserve 

C. didn't conserve                                       D. conserved 

6. If I _____ you were interested in geothermal power, I would have invited you to the talk about it yesterday. 

A. knew                                                         B. have known 

C. had known                                              D. know 

9. Make sentences that are true about you using conditional type 1, 2 or 3. 

(Viết các câu đúng về bạn dùng các câu điều kiện loại 1, 2, hoặc 3.)

If I save enough money, I will purchase an electric bike to reduce my carbon footprint. 

(Nếu tôi tiết kiệm đủ tiền, tôi sẽ mua một xe đạp điện để giảm khí thải cacbon.)

If I were my sister, I would join the green living club at the school. 

(Nếu tôi là chị tôi, tôi sẽ tham gia vào câu lạc bộ sống xanh ở trường.)

Last week, if I had known about the workshop on tidal energy, I would have attended.

(Tuần trước, nếu tôi biết về hội thảo về năng lượng thủy triều, tôi đã tham dự.)