一、情态动词的被动结构由"情态动词＋be＋ED分词"构成
- Ground plans and contour(等高线) maps of the Earth _____ from aerial photographs.
［A］ can be drawn
［B］ can draw
［C］ to draw
［D］ drawn - When ［A］ a spinning ball bounces， some of ［B］ the energy contained in its rotation can transferr ［C］ to its energy of forward motion ［D］ .
- Orchestral instruments _____ under the following types：strings，woodwind， brass， and percussion(打击乐器组).
［A］ grouped
［B］ can group
［C］ can be grouped
［D］ to be grouped
二、成语动词的被动语态
这里的成语动词包括"动词＋介词"，"动词＋副词"和"动词＋副词＋介词"
- After a heated ［A］ discussion for ［B］ a long time that afternoon, a suggestion putted forward ［C］ by ［D］ the head of the committee.
- It was quite obvious that ［A］ those problems were never paid ［B］ attention ［C］ by ［D］ designers.
三、主动语态与被动语态的混淆
- Highly precise ［A］ measurements have been shown ［B］ that variation in ［C］ the Earth's rotation is largely controlled by climatic conditions ［D］ .
- Great changes _____ in the city, since the reform and opening to the outside world, and a lot of factories .
［A］ have been taken place, have been set up
［B］ have taken place, have been set up
［C］ have taken place, have set up
［D］ were taken place, were set up - Ｍild forms of exercise can _____ some of the loss of flexibility that accompanies aging.
［A］ stop
［B］ to stop
［C］ stopping
［D］ be stopped
四、例题解析
- A为正确答案。
- C错。本题含有情态动词，由于主语(energy)与谓语动词(can transfer)之间存在着被动关系，所以，本句C处应改为"can be transferred"。
- C对。判断主被动语态，关键要看主语能否发出谓语动词的动作。本句的主语"乐器"显然不能自己"分组"，而是被分为...。故用被动态。
- C错。改为was putted forward。
- C错。改为attention to。pay attention to是一固定词组，不能丢失小品词to。
- B错。改为"have shown"。原句主句选用了现在完成时的被动语态，而主语"测量结果"分明能自己显示"show"，故应用主动语态才对。全句译为："高度精确的测量结果显示地球转动的变化主要受气候条件的控制。"
- B对。take place是不及物动语短语，它的主语为事或物，故用主动语态，因为有since 介词短语，所以这里用完成时，不用过去时。后半句主语factories 与谓语set up之间的关系是被动关系，故用被动语态，B 为正确答案。
- A对。和上例相同，主语"锻炼"本身也能起到"stop...flexibility"的作用，故应选主动语态。