Complete the blanks with the verbs in brackets: 1. Many wildlife habitats will be destroyed if man _____________________ (keep) polluting the environment. 2. If we dump all sorts of chemicals into rivers, we _______________ (not be able to) swim in them in the future. 3. If we __________________ (not stop) cutting down so many trees, we ___________________ (endanger) our oxygen supply. 4. Soon the Earth’s resources will be exhausted if the human population ____________________ (continue) to grow.To talk about situations that will possibly or 5. If everybody continues to use aerosols and CFCs, the hole in the probably happen in the future. ozone layer ______________________ (get) bigger.Example 6. If the sun radiation can’t escape into space, Earth’s temperature If I study harder, I will pass my exams easily. (It’s very _____________________ (increase) steadily.likely that this may happen)7. If the global temperature ______________________ (rise), sea levels __________________ (rise) too. 8. We’ll threaten our own existence if we _________________ (not cut down) on waste rapidly. 9. People ____________________ (run out of) drinking water one day if they _______________ (not use) it more rationally. IF–CLAUSE + SIMPLE PRESENT10. If he ____________________ (want) to help the planet, then he go /goes / don’t go / doesn’t go__________________ (have to) change his habits. MAIN CLAUSE + FUTURE SIMPLE will + infinitive Complete the blanks with the verbs in brackets: 1. If people _______________________ (not be) so careless, Earth wouldn’t be in danger. 2. The amount of waste ______________________ (decrease) if people started to buy reusable packages.3. Many fish wouldn’t die if factories _____________________ (not dump) so many chemicals into rivers and oceans. To talk about hypothetical, unreal or impossible 4. If people _____________________ (buy) more recycled paper, there situations in the present. wouldn’t be so much waste. 5. _________________________ (you take) these bottles to the bottle bank if I asked you to?Example 6. If people really ____________________ (not care) about the If I studied harder, I would pass my exams. environment, they ____________________ (not try) to save it. (But I don’t do it - I’m just imagining this) 7. If Paul __________________ (think) more about the planet, he If I were you, I would study more.wouldn’t waste so much water. (Here we are giving some advice)8. We ________________________ (be) less worried if oil spills _____________________ (not have) such destructive effects. 9. If we consumed less, we ____________________ (produce) less waste material.10. If we ___________________ (destroy) the ozone layer, nothing IF–CLAUSE + SIMPLE PAST______________________ (save) us from the UV rays. went / didn’t go MAIN CLAUSE + CONDITIONAL would + infinitive Complete the blanks with the verbs in brackets: 1. Many wildlife habitats will be destroyed if man _____________________ (keep) polluting the environment. 2. If we dump all sorts of chemicals into rivers, we _______________ (not be able to) swim in them in the future. 3. If we __________________ (not stop) cutting down so many trees, we ___________________ (endanger) our oxygen supply. 4. Soon the Earth’s resources will be exhausted if the human population ____________________ (continue) to grow.To talk about situations that will possibly or 5. If everybody continues to use aerosols and CFCs, the hole in the probably happen in the future. ozone layer ______________________ (get) bigger.Example 6. If the sun radiation can’t escape into space, Earth’s temperature If I study harder, I will pass my exams easily. (It’s very _____________________ (increase) steadily.likely that this may happen)7. If the global temperature ______________________ (rise), sea levels __________________ (rise) too. 8. We’ll threaten our own existence if we _________________ (not cut down) on waste rapidly. 9. People ____________________ (run out of) drinking water one day if they _______________ (not use) it more rationally. IF–CLAUSE + SIMPLE PRESENT10. If he ____________________ (want) to help the planet, then he go /goes / don’t go / doesn’t go__________________ (have to) change his habits. MAIN CLAUSE + FUTURE SIMPLE will + infinitive Complete the blanks with the verbs in brackets: 1. If people _______________________ (not be) so careless, Earth wouldn’t be in danger. 2. The amount of waste ______________________ (decrease) if people started to buy reusable packages.3. Many fish wouldn’t die if factories _____________________ (not dump) so many chemicals into rivers and oceans. To talk about hypothetical, unreal or impossible 4. If people _____________________ (buy) more recycled paper, there situations in the present. wouldn’t be so much waste. 5. _________________________ (you take) these bottles to the bottle bank if I asked you to?Example 6. If people really ____________________ (not care) about the If I studied harder, I would pass my exams. environment, they ____________________ (not try) to save it. (But I don’t do it - I’m just imagining this) 7. If Paul __________________ (think) more about the planet, he If I were you, I would study more.wouldn’t waste so much water. (Here we are giving some advice)8. We ________________________ (be) less worried if oil spills _____________________ (not have) such destructive effects. 9. If we consumed less, we ____________________ (produce) less waste material.10. If we ___________________ (destroy) the ozone layer, nothing IF–CLAUSE + SIMPLE PAST______________________ (save) us from the UV rays. went / didn’t go MAIN CLAUSE + CONDITIONAL would + infinitive Complete the blanks with the verbs in brackets: 1. Many wildlife habitats will be destroyed if man KEEPS polluting the environment. 2. If we dump all sorts of chemicals into rivers, we WON’T BE ABLE TO swim in them in the future. 3. If we DON’T STOP cutting down so many trees, we WILL ENDANGER our oxygen supply. 4. Soon the Earth’s resources will be exhausted if the human population CONTINUES to grow.To talk about situations that will possibly or 5. If everybody continues to use aerosols and CFCs, the hole in the probably happen in the future. ozone layer WILL GET bigger.Example 6. If the sun radiation can’t escape into space, Earth’s temperature If I study harder, I will pass my exams easily. (It’s very WILL INCREASE steadily.likely that this may happen)7. If the global temperature RISES, sea levels WILL RISE too. 8. We’ll threaten our own existence if we DON’T CUT DOWN on waste rapidly. 9. People WILL RUN OUT OF drinking water one day if they DON’T USE it more rationally.10. If he WANTS to help the planet, then he WILL HAVE TO change IF–CLAUSE + SIMPLE PRESENThis habits. go /goes / don’t go / doesn’t go MAIN CLAUSE + FUTURE SIMPLE will + infinitive Complete the blanks with the verbs in brackets: 1. If people WEREN’T so careless, Earth wouldn’t be in danger. 2. The amount of waste WOULD DECREASE if people started to buy reusable packages. fish wouldn’t die if factories DIDN’T DUMP so many 3. Many chemicals into rivers and oceans. 4. If people BOUGHT more recycled paper, there wouldn’t be so much To talk about hypothetical, unreal or impossible waste. situations in the present. 5. WOULD YOU TAKE these bottles to the bottle bank if I asked you to? 6. If people really DIDN’T CARE about the environment, they Example WOULDN’T TRY to save it.If I studied harder, I would pass my exams. 7. If Paul THOUGHT more about the planet, he wouldn’t waste so (But I don’t do it - I’m just imagining this) much water.If I were you, I would study more.8. We WOULD BE less worried if oil spills DIDN’T HAVE such (Here we are giving some advice)destructive effects. 9. If we consumed less, we WOULD PRODUCE less waste material. DESTROYED the ozone layer, nothing WOULD SAVE us 10. If we from the UV rays. IF–CLAUSE + SIMPLE PAST went / didn’t go MAIN CLAUSE + CONDITIONAL would + infinitive