题目内容
14.-Why is the classroom so dirty!-Sony,sir,It yesterday.We forgot to do it.( )
A. | doesn't clean | B. | didn't clean | C. | isn't cleaned | D. | wasn't cleaned |
分析 --为什么教室那么脏!
--对不起,老师,昨天没打扫.我们忘记打扫了.
解答 答案:D 联系汉语意思,可知答语中的It代指上文的classroom.根据yesterday(昨天),可知这是一般过去时的标志词,此句应用一般过去时态,根据dirty(脏乱),可知教室很脏没有被打扫,此处应用一般过去时的否定形式.又知it(教室)是clean(打扫)这一动作的承受者,二者是被动关系,所以此处是否定形式的一般过去式的被动语态,结构为wasn't/weren't+过去分词.又因It是第三人称单数,所以此处应用wasn't cleaned.故选D.
点评 此题考查一般过去时的被动语态的用法.做题时,抓住关键词判断时态,一般过去时的时态有yesterday、in the past、一段时间+ago等等.再判断主语与动词的关系,主语是动作的承受者用被动语态,结构为was/were+过去分词.
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