2. Underline the stressed words in the sentences. Listen and check. Then practise saying the sentences with a natural rhythm.

(Gạch dưới các từ được nhấn mạnh trong các câu. Nghe và kiểm tra. Sau đó tập nói các câu với nhịp điệu tự nhiên)

1. The village was completely destroyed by floods.

2. Some gases are released into the air through human activities.

3. Has the earth’s temperature increased in the past few years?

4. Some environmental disasters wil become more frequent.

2. Complete the sentences using the correct forms of the words in 1.

(Hoàn thành các câu sử dụng dạng đúng của từ trong 1)

1. Wind and sunlight are examples of ___________ sources of energy.

2. The world produces more than two billion tonnes of solid __________ every year.

3. Governments need to limit the amount of greenhouse gases that is ____________ into the air.

4. Her grandpa is now suffering from ill health after many years of working in the _____________ industry.

5.The burning of ____________ like coal and gas has led to an increase in the amount of CO2 in the atmosphere.

2. Rewrite these sentences using past participle clauses.

(Viết lại những câu này sử dụng mệnh đề quá khứ phân từ)

Example: We were given enough information about the causes of global warming, so we started our report.

--> Given enough information about the causes of global warming, we started our report.

1. If farm animals are not kept cool in hot weather, they can suffer from heat stress.

--> ______________ , farm animals can suffer from heat stress.

2. Some farmers were worried about the consequences of deforestation, so they stopped burning trees to create farmland.

--> _______________, some farmers stopped burning trees to create farmland.

3. If carbon dioxide is produced in huge amounts, it causes air pollution and climate change.

--> _______________, carbon dioxide causes air pollution and climate change.