摘要：被动语态是由助动词be加及物动词的过去分词构成.如果有必要强调动作的执行者.动作执行者可以由介词by引出的短语表示.助动词be随主语的人称.数.时态和语气的不同而变化. A. 十种常见时态的被动语态1. 一般现在时 主动语态:do 被动语态:amisare done We clean the classroom every day. 我们每天打扫教室. The classroom is cleaned by us every day. 教室每天都由我们打扫. Such songs are usually sung by girls. 这些歌通常是女孩子们唱的. Russian is not taught in our school. 我们学校不教俄语. Are many goods shipped abroad every day 每天都有许多货物运往国外吗

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