sh結尾的單詞過去式

　　I have established a good working relationship with my boss.

　　我與老板已經建立起良好的工作關系。

　　The school has established a successful relationship with the local community.

　　這所學校與當地社區建立了良好的關系。

　　This unit is now an established part of the course.

　　這個單元現在為本課程既定的一部分。

　　We had to work within the parameters that had already been established.

　　我們必須在已設定的范圍內工作。

　　They are an established company with a good reputation.

　　他們是一家地位穩固、信譽良好的公司。