4. Ask Ss to read the conversation again and complete the conditional sentences.
- Have Ss underline the verb forms in the main clauses and conditional clauses.
- Ask Ss to pick out type 1 conditional sentences.
Key
1. If we use more solar energy, the air will become cleaner and our health will be better. (type 1)
2. People can develop health problems and become ill if they breathe polluted air. (type 1)
3. If we have solar panels on our roofs, we’ll be able to generate our own electricity. (type 1)
4. If people use renewable energy, their impact on the environment is less.
5. Let me know if you need anything else.