Fill in the definite article the if necessary. 1. …ben nevis is … highest mountain in … britain. 2. … urals divide … asia and … europe. 3. … mississippi is in … usa. 4. … london is the capital of … uk. 5. last summer i visited … netherlands and … france. ii. choose the correct variant. 1. if people don`t drop litter, our streets will be clean. a) если бы люди не бросали мусор, наши улицы были бы чистыми. b) если люди не будут бросать мусор, наши улицы будут чистыми. 2. if people thought about the earth, they wouldn`t have so many environmental problems. a) если бы люди думали о планете земля, у них бы не было так много экологических проблем. b) если люди будут думать о планете земля, у них не будет так много экологических проблем. 3. if people hadn`t polluted the planet, many species of animals wouldn`t have disappeared. a) если бы люди не загрязняли планету, многие виды животных не исчезли бы. b) если люди не будут загрязнять планету, многие виды животных не исчезнут. 4. if we walked instead of driving cars, the air would be clean. a) если мы будем ходить пешком вместо того, чтобы ездить на машинах, воздух будет чистым. b) если бы мы ходили пешком вместо того, чтобы ездить на машинах, воздух был бы чистым. iii. complete the sentences, using conditionals. 1. if people think about the future, they (use) bus instead of cars. 2. our planet would be clean if we (not throw) away tons of rubbish. 3. a lot of unique birds wouldn`t have become extinct if people (not destroy) their natural homes. 4. if we (use) filters in cars and buses, we will make air cleaner. iv. form a word that fits suitably in the blank space. 1. the … of environment is very important today. (protect) 2. there is a … centre in our town. (recycle) 3. … of smoking is much discussed nowadays. (prohibit) 4. try to eat only … food with no added chemicals. (nature) v. complete the sentences. pollution, earth, health, poisoned, filters, important, survive, environment, waste. the word 1 … means simply what is around us. nowadays people understand how 2 … it is to solve the environmental problems that endanger people`s lives. there is no ocean or sea which is not used as a dump. many rivers are 3 … too. fish can`t live in them. it happens so because factories and plants produce a lot of 4 … and pour it into rivers. air 5 … is a very serious problem. to make air clean again we need good 6 … at power stations and factories, in cars and buses. both clean air and clean water are necessary for our 7 …. if people want to 8 … they must solve these problems quickly. man is beginning to understand that his environment is not just his own town or country, but the whole 9 …. that`s why people all over the world think and speak so much about ecology.
- We use the definite article "the" because we are referring to a specific mountain, Ben Nevis.
2. The Urals divide Asia and Europe.
- We use the definite article "the" because we are referring to a specific mountain range, the Urals.
3. The Mississippi is in the USA.
- We use the definite article "the" because we are referring to a specific river, the Mississippi.
4. London is the capital of the UK.
- We use the definite article "the" because we are referring to a specific city, London, and a specific country, the UK.
5. Last summer, I visited the Netherlands and France.
- We use the definite articles "the" because we are referring to specific countries, the Netherlands and France.
I. Choose the correct variant.
1. If people don't drop litter, our streets will be clean.
- The correct variant is b) если люди не будут бросать мусор, наши улицы будут чистыми.
2. If people thought about the Earth, they wouldn't have so many environmental problems.
- The correct variant is a) если бы люди думали о планете Земля, у них бы не было так много экологических проблем.
3. If people hadn't polluted the planet, many species of animals wouldn't have disappeared.
- The correct variant is a) если бы люди не загрязняли планету, многие виды животных не исчезли бы.
4. If we walked instead of driving cars, the air would be clean.
- The correct variant is b) если бы мы ходили пешком вместо того, чтобы ездить на машинах, воздух был бы чистым.
III. Complete the sentences, using conditionals.
1. If people think about the future, they will use buses instead of cars.
- We use the first conditional to show a possible future action based on a condition.
2. Our planet would be clean if we didn't throw away tons of rubbish.
- We use the second conditional to show an imaginary situation and its result.
3. A lot of unique birds wouldn't have become extinct if people didn't destroy their natural homes.
- We use the third conditional to show that something didn't happen in the past due to a different action.
4. If we use filters in cars and buses, we will make the air cleaner.
- We use the first conditional to show a possible future action based on a condition.
IV. Form a word that fits suitably in the blank space.
1. The protection of the environment is very important today.
2. There is a recycling centre in our town.
3. The prohibition of smoking is much discussed nowadays.
4. Try to eat only natural food with no added chemicals.
V. Complete the sentences.
1. The word "environment" means simply what is around us.
2. Nowadays, people understand how important it is to work on solving the environmental problems that endanger people's lives.
3. Many rivers are polluted too. Fish can't live in them.
4. Factories and plants produce a lot of waste and pour it into rivers.
5. Air pollution is a very serious problem.
6. To make air clean again, we need good filters at power stations and factories, in cars and buses.
7. Both clean air and clean water are necessary for our health.
8. If people want to survive, they must solve these problems quickly.
9. Man is beginning to understand that his environment is not just his own town or country but the whole Earth. That's why people all over the world think and speak so much about ecology.