Last Saturday our town held a small science fair in the school hall. Dana, who is my cousin, built a model of a wind turbine, and Ruslan showed a simple water filter. The judges walked slowly between the tables, and they asked every pupil a question. One judge asked Dana, "How does your turbine produce electricity?" Dana explained that the moving blades turn a small motor. Because the model worked well, the judges gave her a prize. What a clever idea it was! Ruslan was disappointed, but he decided to improve his filter. "Come and see our project next year," he told the visitors. Nobody left the hall until the fair was over.
In the sentence "Nobody left the hall until the fair was over", what kind of clause is "until the fair was over"?
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Верный ответ
- Cadverbial clause of time
Разбор
The clause is introduced by "until" and shows up to what moment nobody left the hall. It answers the question "when?" or "until when?", so it is an adverbial clause of time. It does not give a reason, a contrast or an aim.