From active to passive voice
1- We should clean up the air.
2 - We should protect animals in danger.
3 - We could use more solar energy.
4 - We shouldn’t treat food with chemicals.
5 - We must find ways of preventing oil spills
6 - We shouldn’t use products which damage the ozone layer.
7 - We mustn’t put waste into seas and rivers.
8 - We must change people’s attitude towards the environment.
9 - Governments ought to make tough laws against litter.
10 - We can save more energy and water.
11 - We should ban cars which use leaded petrol.
12 - We ought to stop cigarette advertising.
Answers
Answer:
1- The air would be cleaned by us
2- Animals should be protected in danger
Change the sentences from active to passive:
Structure of using modal verbs in passive voice:
Passive: obj + modal verb + be + past participle + by + sub.
1- We should clean up the air.
- The air should be cleaned up by us.
2 - We should protect animals in danger.
- Animals should be protected from danger by us.
3 - We could use more solar energy.
- More solar Energy could be used by us.
4 - We shouldn’t treat food with chemicals.
- Food shouldn't be treated with chemicals by us.
5 - We must find ways of preventing oil spills.
- The ways of preventing oil spills must be found by us.
6 - We shouldn’t use products which damage the ozone layer.
- Products that damage the ozone layer shouldn't be used by us.
7 - We mustn’t put waste into seas and rivers.
- Waste mustn't be put into seas and rivers by us.
8 - We must change people’s attitude towards the environment.
- People's attitude towards the environment must be changed.
9 - Governments ought to make tough laws against litter.
- Tough laws against litter ought to be made by the Government.
10 - We can save more energy and water.
- More Energy and water could be saved by us.
11 - We should ban cars which use leaded petrol.
- Cars which use leaded petrol should be banned by us.
12 - We ought to stop cigarette advertising.
- Cigarette advertising ought to be stopped by us.