having suffered such heavy loss
現(xiàn)在分詞用完成式表示分詞動作發(fā)生在句子謂語動作之前.
=Because the businessman had suffered such heavy loss,
又如
Having heard the news,she came up with a good idea.
聽到這個(gè)消息（之后）,她想出了一個(gè)好主意.那這個(gè)結(jié)構(gòu)是做原因狀語的嗎，只能用having+過去分詞表示嗎辛苦了親是不是原因狀語，得看句子意思意思。狀語：動作是主動的，而且動作發(fā)生在謂語動作前，就用現(xiàn)在分詞完成式。你的例句是原因狀語。但是：Having heard the news, she came up with a good idea.聽到這個(gè)消息（之后），她想出了一個(gè)好主意。=After she had heard the news（時(shí)間狀語）