1.had been done---The task had been done by last month.
2.have/has been done---The house has been painted .
3.is/are being done---The building is being torn down now.我問的是非謂語動(dòng)詞形式的用法1.Tied by the police , he felt very uncomfortable.過去分詞表被動(dòng)，表完成。其邏輯主語是主句主語he,因he 與tie構(gòu)成了被動(dòng)關(guān)系，所以用過分。例：Beaten by his father, he left home.2.Having finished my homework, I eventually had time for a movie. ---having done的邏輯主語是主句主語I，I與finish構(gòu)成了主動(dòng)關(guān)系，且finish這個(gè)動(dòng)作發(fā)生在謂語動(dòng)詞之前，所以用having done.having done 表主動(dòng)，且表示的動(dòng)作在謂語之前發(fā)生。例：Having washed her clothes, she continued to do other housework.3.being done 是一種形式為主動(dòng)而意表被動(dòng)的形式，它表示的動(dòng)作與謂語同時(shí)發(fā)生。例：Being examined by the vet, the dog struggled to get up.Being painted now, the gategave off a terrible smell.