Being+動詞過去分詞 強(qiáng)調(diào)正在被.時(shí)用.
Being interviewed ,he felt very nervouse .
done放在句首時(shí)表示：被動,完成或狀態(tài) .
Seen from the top ,the building is very high .
worn out after a long walk ,he felt very tired .
Having done 放在句首表示該動作與主句的主語是主動關(guān)系且強(qiáng)調(diào)該動作發(fā)生在主句謂語動作之前.
Having finished his work ,he went home happily .Having been done 是時(shí)態(tài)沒有變，多了被動語態(tài)是么Having been done 表示該動作與主句的主語是被動關(guān)系且強(qiáng)調(diào)該動作發(fā)生在主句謂語動作之前