每年地球日.世界上的许多人关灯一小时为地球节约能源．Every year.a great number of people around the worldturn offtheir Lights for hour to save energy for the earth on Earth Day．题目和参考答案——青夏教育精英家教网——

题目内容

18．每年地球日，世界上的许多人关灯一小时为地球节约能源．
Every year，a great number of people around the worldturn offtheir Lights for hour to save energy for the earth on Earth Day．

分析 turn off

解答答案：turn off．
首先通过中英文句子的比对，可知英文句子中缺少"关闭"的表达．短语"关闭"的英文表达是：turn off．本题中，根据时间状语every year判断用一般现在时，主语是复数名词，故答案为：turn off

点评做这类题型，首先根据所给汉语明确句子所要考查的单词或短语的拼写，再结合相关语法知识对单词或短语做出形式上的变化．

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