done在非謂語中是過去分詞,一般情況下表被動(dòng)、完成.但如果動(dòng)詞不及物,那就只表完成,不表被動(dòng),如　fallen leaves,　boiled water指落葉,開水,fallen和boiled只表已落下,已沸騰過,不表被動(dòng).
非謂語中不僅僅過去分詞可以表被動(dòng),還有不定式的被動(dòng)to be done,現(xiàn)在分詞的被動(dòng)being done,having been done　動(dòng)名詞的被動(dòng)being done.使用時(shí)要看是否完成.
一般情況下,表被動(dòng),完成,done
表被動(dòng),進(jìn)行,being done
表被動(dòng),未發(fā)生/將來 to be done
在表被動(dòng)完成的情況下,如果還有表達(dá)次數(shù)或時(shí)間的狀語相連,則用having been done
例：He is said to be sent to Beijing.據(jù)說他將被派往北京.（被動(dòng),將來）
　　He is reading a book written by Bill Gates.他在讀一本比爾蓋茨寫的書.（被動(dòng)完成）
　　Having been warned many times,the boy got to school late again.已被警告了許多次,這個(gè)男孩上學(xué)又遲動(dòng)了.（被動(dòng)完成,加表次數(shù)的狀語）
Being watched,he didn't want to eat anything.被人盯著,他不想吃任何東西.（被動(dòng),進(jìn)行）