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1、Unit 4 Wildlife protection语法探究现在进行时态的被动语态表示一个被动的动作正在发生或进行。构成形式为“be being done，即由系动词 be + being + 及物动词的过去分词构成。其中的be应根据主语人称和数的情况相应地变化为am、is或are。例如：At the moment my house is being repaired. 目前我的房子正在修理。I am being interviewed by several reporters now. 现在有好几个记者正在对我进行采访。Many soldiers are being carried to t
2、hat country by ship. Maybe there is going to be a war over there. 船正在把许多士兵运往那个国家，或许那儿将有一场战争。典例解析1. With more forests being destroyed, huge quantities of good earth _ each year.卷 A. is washing away B. is being washed away C. are washing away D. are being washed away解析 本句意为：更多的森林正在被毁掉，因此每年有大量的好土正在被冲走。
3、wash away与earth之间的是被动关系，应用现在进行时态的被动语态，huge quantities of good earth为复数概念，所以B不对。答案为D。2. A new cinema _ here. They hope to finish it next month.、内蒙、卷A. will be built B. is built C. has been built D. is being built解析 根据 “They hope to finish it next month 判断，新电影院尚未竣工，应该正在建设之中，故使用现在进行时的被动语态。答案为D。3. -By the way, have you moved into the new house? -Not yet. The walls _. (市月考试题) A. were painted B. are painted C. are being painted D. are painting解析 之所以还没搬进去是因为墙壁正在粉刷，所以考虑用进行时态，也就是 C 和 D 两项。又要用被动形式。所以只能是 C 项。