题目内容
8.Every year,trees in our city in order to protect our environment.( )| A. | is planted | B. | are planted | C. | plant |
分析 每年为了保护环境,我们的城市都要种树.
解答 答案:B 此题中主语trees是谓语动词plant的承受者,即二者是被动的关系;根据时间状语every year可知,此句要用一般现在时态.故谓语动词要用一般现在时的被动语态.一般现在时的被动语态的结构为is/am/are+动词的过去分词,又知主语trees是复数,故动词be用are,故选B
点评 在完成此类题目时,要通过主语与谓语动词之间的关系来判断句子的语态,是主动结构还是被动结构;然后再根据时间状语判断句子的时态,即可选出正确答案.
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