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МатематикаВопрос:
2 We ....................... (use) solar power for ten years now.
Ответ:
Ответ:
2 We have been using solar power for ten years now.
Краткое пояснение: Используем Present Perfect Continuous, чтобы подчеркнуть, что действие (использование солнечной энергии) началось в прошлом и продолжается до настоящего времени, с акцентом на продолжительность.
Проверка за 10 секунд: "Have been using" указывает на длительное действие, начавшееся 10 лет назад и продолжающееся до сих пор.
Читерский прием: "For ten years now" - типичный маркер Present Perfect Continuous.
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- 2 A lot of ................. is dumped into this river.
- 3 Chemicals cause ................
- 4 ................ is environmentally friendly.
- 5 Many ................ are in danger of dying out.
- 6 Forest fires cause many animals to lose their ................
- 7 How can I avoid breathing ................ from cars while cycling in the city?
- Complete the sentences by choosing a, b or c. 1 Coral reefs are... a islands. b towns. c ocean communities.
- 2 Coral is... a hard. b soft. c blue.
- 3 Coral polyps are... a huge plants. b sensitive creatures. c bright-coloured algae.
- 4 Coral reefs die because... a algae lose their colour. b people fish them. c the oceans' temperature increases.
- 2 Complete the sentences with the present perfect continuous. 1 You look tired. ..................... (you/work) in the garden all afternoon?
- 3 The children .................... (play) on the computer for a long time. Tell them to stop.
- 4 A lot of animals .................... (lose) their natural habitats recently.
