Unit 6 : LOOKING BACK
PRONUNCIATION
1.Listen and repeat the questions paying attention to the raising intonation.
2.Listen and mark the raising intonation on the echo questions.
VOCABULARY
Complete the sentences
1.energy use
2.extinction
3.emissions
4.carbon footprint
5.absorb
6.deforestation
7.diversity
8.catastrophic
GRAMMAR
1.Rewrite the sentences, using perfect participle
1.Having learnt about the benefits of recycling and reusing, the students started collecting waste paper, bottles and cans to recycle and reuse.
2.having refused Nam’s offer of a lift in his car, Mai had to walk home.
3.Having read some documents about Green Earth, Ha decided to join the organization.
4.Having used too much chemical fertilizer on their farm, the farmers now have to drink polluted water.
5.Having replaced all the light bulb in the house with LED lights, she saved a lot of money on her electricity bills.
6.Having become too dependent on the use of electricity, we have to find alternative sources of energy before fossil fuel runs out.
2.Combine the sentences, using perfect gerunds
1.Tonya was strongly criticized for having dumped a lot of rubbish on the beach.
2. Sam regretted not having worked hard enough in his previous job.
3.people admired Tony for having rescued the kids from the fire.
4.I remember having seen him before.
5. The politician denied having lied to the villagers.
6.Thanh admitted having forgotten to turn off the gas cooker before leaving the house / before he left his house.