Having sufferied from heat trouble for years,He has to take

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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

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.

Having sufferied from heat trouble for years,He has to take ------ heart trouble for years,he has to take some medicine ____from the heart trouble for years,he has to take some med ___from heart trouble for years,Professor White has to take having suffered from heart trouble for years.为什么不用suffering ______from heart trouble for years,Professsor Wang has to ta He has been away from here for ten years Having been away from home for many years,he _______ go back 改错:He has been to Beijing for over two years he has gone to L.A. for almost seven years he has gone to beijing for five years he has been away from the school for many years .中”from”可以省去