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Example 1: They tried hard to clean up the lake, but/yet it remain polluted.
Example 2: They tried hard to clean up the lake; however/nevertheless it remains polluted.
Example 3: Although/though/even though they tried hard to clean up the lake, it remains polluted.
Example 4: In spite of/Despite their trying hard to clean up the lake, it remains polluted.
1. Technological progress has stimulated the utilization of solar energy. The use of it poses some problems in gathering the heat from the sun.
2. The fossil fuel is rapidly running out. Some huge reserves remain untouched.
3. There are some difficulties in using solar energy. This energy is used directly as heat to produce high temperature for metallurgical operations.
4. The air in our region is much polluted. Toxic gases are still released into it.
5. The efficiency in the production and transformation of energy increases. The energy problem remains.
6. The utilization of fossil fuel is intensified. The reserves are increasing both overall and per capita.
Join the sentences using the words in brackets. Think of other ways of joining them.
1. Nuclear energy is an unlimited source for generating thermonuclear energy. It presents some danger for environment (however).
2. The energy station was fined. It is still releasing toxic gases into the air (despite).
3. The generation of electric power is accompanied by a great loss of energy. Some losses take place when transmitting and using it (in addition).
4. The production of nuclear energy is connected with the danger of accidents. It is connected with the problem of burning nuclear waste. (both … and).
Translate the sentences, mind Subjective Infinitive Construction.
1. Burning of fossil fuels is known to produce the large volumes of carbon dioxide which contribute to the greenhouse effect on the Earth.
2. Coal combustion is thought to have made a significant contribution to atmospheric lead deposition in the UK.
3. Though geothermal energy is often assumed to be a “clean” form of power generation, many of the hot springs actively precipitate arsenic, mercury and other harmful substances.
4. Elements enriched in oil such as vanadium have been found to be elevated in the environment in the vicinity of oil refineries.
5. The source of the mercury was found to be the waterlogged soil where this element becomes converted to a methylated form.
6. Combustion of high sulphur-containing fuels is believed to result in production of sulphur dioxide and sulphur trioxide that, in its turn, results in acid rains.
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