Having sufferied from heat trouble for years,He has to take some medicine with him wherever he goes为什么开头不选Suffered.还是being suffered
问题描述：
Having sufferied from heat trouble for years,He has to take some medicine with him wherever he goes
为什么开头不选Suffered.还是being suffered
答
完成时表示一段时间所以用having suffered
suffer from sth 不用被动语态
答
suffered 不能做主语
being suffered 不必要被动
答
从句的主语中心词是He
所以还原成正常句子是
He has sufferied from heart trouble for years.
去掉主语,改成having
用Suffered,与后面的for years 不对应,是段时间.
Being suffered,还原后是
He is suffered from 错误,不用被动式.