英语-请问这句话有错误吗?

英语-请问这句话有错误吗?

题目
英语-请问这句话有错误吗?
Please fasten your seat belt before the plane untill the safety light turned off.
答案
有错.整句不但有语法错误而且意思模糊.另外untill 应为 until; turned off 应为 is turned off/has turned off (前后时态要一致,可用被动或不被动式).这句话的正确说法应该为:
(简单的) Please fasten your seat belt until the safety light is turned off.
(复杂的) Please fasten your seat belt until the plane is safely in the air and the captain has turned the safety light off.
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