九年级英语第三单元1a的被动改成主动
问题描述：
九年级英语第三单元1a的被动改成主动
有下面几个句子：1,teenagers should be allowed to go out with their friends every night 2,sixteen-year-olds should be allowed to drive 3,students should not be allowed to have part-time jobs 4,sixteen-year-olds should be allowed to get their ears pierced 5,sixteen-year-olda should be allowed to choose their own clothes
答
很明显主动句和被动句的主语不尽一样,所以先找出主动句的主语.比如第一句改为的主语可以换成parents；第二句换成government；第三句parents或者school；第四、五句可以是parents再者,可以不转化主语.比如以上几个句...