One video retailer sold the hit movie Titanic for $9.99, undercutting the $19.99 suggested retail price and losing about $6 on each copy sold. 

参考译文：一个影片销售商以9.99美元的价格出售火爆电影泰坦尼克号，该片建议零售价19.99美元，每张亏损大约6美元。(以上为第1个现在分词作条件状语，第2个现在分词作结果状语）。

备注：句子主语one video retailer 是现在分词undercutting/losing逻辑主语

现在分词作状语，其逻辑主语一般是句中的主语，如果不是，需在V-ing 形式前加名词或代词主格作逻辑主语。

(1)作原因状语，相当于原因状语从句。

Being ill, Mary didn't come to school yesterday.

(2)作时间状语，相当于时间状语从句。

Seeing their teacher coming, the students stopped talking.

备注：如果现在分词表示的动作与谓语表示的动作同时发生，常在现在分词前加上when或while。

While waiting for the plane, I had a long talk with Simon.

(3)作条件状语,相当于一个条件状语从句。

Working harder, you'll be No. 1 in your class.

(4)作让步状语，相当于让步状语从句。

Weighing almost two hundred jin, the stone was moved by him alone.

(5)作结果状语。

He died, leaving nothing but debts.

(6)作伴随状语或方式状语。

He sat by the roadside, begging.

备注（1）：现在分词的完成式表示它发生在主句谓语动词表示的动作之前。

Having finished his homework, he left the classroom.

备注（2）：现在分词的被动式

当句子的主语是动作的承受者时，用V-ing 形式的被动式。

The factory being built now is a big one.

备注（3）：现在分词的否定形式是由“not + 现在分词”构成。

Not having been invited to the party, she had to stay home.