题目内容
15.-Mum,could I play games now?-Unless all your homework______.( )
| A. | was done | B. | did | C. | done | D. | is done |
分析 -妈妈,我现在可以玩游戏吗?
-除非你所有的作业都完成了.
解答 答案:D
根据问句Mum,could I play games now?可知句子描述的是现在的情况故确定为一般现在时态,主语all your homework是谓语动词do的承受者,二者形成被动关系,故确定为被动语态,故确定答语中谓语动词为一般现在时态的被动语态,其结构为:am/is/are+及物动词的过去分词.主语为all your homework,其中homework是不可数名词为单数,助动词为is,do的过去分词为done,故填入is done,故选D
点评 本题主要考查被动语态,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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