请问这句英语中的after I was finished working, 是怎样的一种结构和用法?

请问这句英语中的after I was finished working, 是怎样的一种结构和用法? 英语分词的用法Supper finished (=After supper was finished),we start after 的用法They are working at home after---- ( pick ) corn,中的 i was finished i am finished 和 i was finish 请问这句话的结构和用法 He said I was hard-working.的同义句 I waited until he had finished his homework.请问这句的过去完成时为何是用在f 英语~~这句话的结构和一些用法是怎样的?能看的懂但搞不明白~~求指点! 一句英语句子里working的用法 It was a little tire after I finished my work.. 这句英语句子的结构是怎样的. 这句英语的句型结构是怎样的?