题目内容
9.To fight air pollution,many trees ______ in our city each year.( )| A. | plant | B. | planted | C. | are planted | D. | were planted |
分析 为了对抗空气污染,每年我们城市要种很多树.
解答 答案:C
分析句子结构可知句中缺少谓语动词,首先根据句中的时间状语为each year,故确定谓语动词为一般现在时态,结合选项可知主语many trees 是谓语动词plant的承受者,二者形成被动关系,故确定为被动语态,故谓语动词确定为一般现在时的被动语态,其构成为:am/is/are+及物动词的过去分词,根据主语many trees 是第三人称复数,故助动词为are,plant的过去分词为planted,故填入are planted,故选C
点评 本题主要考查语态辨析,当句子的主语是动作的承受者时,应该用被动语态,本题考查的是一般现在时态的被动语态.一定注意其构成形式,一般现在时的被动语态的构成:am/is/are+及物动词的过去分词
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