Our teacher warned us not to touch the chemicals in the lab．．Wewere warned not to touch the chemicals in the lab．题目和参考答案——青夏教育精英家教网——

题目内容

8．Our teacher warned us not to touch the chemicals in the lab．（被动语态）．
Wewere warned not to touch the chemicals in the lab．

分析我们老师警告我们不要在实验室里接触化学品．

解答答案：were warned．结合warn sb to do sth，主语we是warn的承受者，构成被动关系，结合时态用一般过去时的被动语态was/were+过去分词，主语we，故were，故答案是were warned．

点评被动语态（passive voice）是动词的一种形式，用以说明主语与谓语动词之间的关系．英语的语态共有两种：主动语态和被动语态．主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者．被动语态是动词的一种特殊形式，一般来说，只有需要动作对象的及物动词才有被动语态．汉语往往用"被"、"受"、"给"等被动词来表示被动意义．被动语态由"助动词be+及物动词的过去分词"构成．被动语态的时态变化只改变be的形式，过去分词部分不变．疑问式和否定式的变化也如此．

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